Database Users

"AN-21 U" - Unbranded 6.2" 2 DIN Pure Android 4.1 Car Stereo Radio Head Unit [ROOTED]

"AN-21 U" - Unbranded 6.2" 2 DIN Pure Android 4.1 Car Stereo Radio Head Unit [ROOTED]
"AN-21 U" - Unbranded 6.2" 2 DIN Pure Android 4.1 Car Stereo Radio Head Unit
To avoid confusion, below is a picture of the unit this thread relates to.
I am aware of a previous unit using the same design, but it runs an older version of Android. This thread is for the unit running 4.1 as standard.
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Specification / Features
Hardware
CPU: ARM Cortex A9 MST786 Dual Core 1GHz
GPU: Mali-400 MP
RAM: SKHYNIX 1G DDR3 RAM H5TQ4G83AFR
iNAND: SanDisk 8GB SD1N5C2-8G (1GB system storage, 6GB internal USB storage)
MCU: STM8AH ST
Bluetooth: BlueCore5 CSR
Screen: Capacitive 800*480
GPS: SiRF Atlas V GPS Processor
Radio: Philips TEF6624
Sound Effect Processor: BD37534 ROHM
Outputs: 4x 45w outputs, Toshiba TB2929
Additional Outputs: 1x Subwoofer, 4x pre-outs
Microphone: Built in microphone
Supported Features
Bluetooth connection to phone for calls.
WiFi and 3G dongles. These must be plugged in before turning the device on, and are not hot-swappable.
Compatible 3G Dongles
ZTE MF190 Clone (Qualcomm MSM6280 + RTR6280)
Huawei E171 (Qualcomm MSM6290)
Huawei E180
Huawei E261
Huawei E1752
Non-Compatible 3G Dongles
Generic Orange/Black eBay dongle (Qualcomm MSM6280 + RTR6275)
Huawei E220
Huawei E352
Huawei E367
Connection of multiple USB devices through a USB hub, including wireless keyboards, USB memory sticks, and wireless dongles. These types of devices are hot-swappable.
Multiple USB memory sticks can be plugged in. They mount at "mnt/usb/sda1", "mnt/usb/sdb1", and so on. The limit is not known, three have been tested at once.​
Wiki Page
This unit has a very useful Wiki page with a lot of good information.
Tonghai Create AN-21 U Wiki
It would be really appreciated if before posting any questions, you take a read of it, this main post, watch the video review, or do a search of this thread to avoid any repeats.​
Video Review
Other videos showing specific features are also available on my channel.​
News
2014.01.20Download links and bugs section updated.​
2013.12.05Root is now possible.​
Previous News
2013.11.16The manufacturer intends to add new features to the unit, they are currently developing an OBD II system, I assume this would be via USB. They say it will require additional hardware.
Sooner than that, they plan to release wireless mirror link for Android phones.
I asked about Bluetooth compatibility, they said my request would be sent to their engineer to include Bluetooth modules. Whether this actually gets included or not, we will have to see.​
File Repository
This site has links to most of the files in this thread, including firmware and MCUs.
Android 4.1 Car Stereo File Repository
All files are of course used at your own risk.​
Firmware Updates
To update the unit, extract the update files from the downloaded RAR and copy them to a MicroSD Card, insert the card, go to Settings -> General Settings -> System Update or turn the unit on whilst holding down the 'Menu' and 'Volume' buttons until the update starts.
System Version 2.7.29
Mirror 1 - Click here
Previous Versions
System Version 2.7.28
Mirror 1 - Click here
System Version 2.7.11
Mirror 1 - Click here
System Version 2.7.9
Mirror 1 - Click here
System Version 2.7.4
Mirror 1 - Click here
System Version 2.6.96
Mirror 1 - Click here
System Version 2.6.93
Mirror 1 - Click here
System Version 2.6.77-2
Mirror 1 - Click here
System Version 2.6.77
Mirror 1 - Click here
System Version 2.6.73
Mirror 1 - Click here
System Version 2.6.70
Mirror 1 - Click here
Mirror 2 - Click here
System Version 2.6.68
*WARNING* This update appears to cause issues with GPS *WARNING*
Mirror 1 - Click here
Mirror 2 - Click here
Password
System Version 2.6.62
Mirror 1 - Click here
Mirror 2 - Click here
Mirror 3 - Click here
System Version 2.6.60-2
Mirror 1 - Click here
Mirror 2 - Click here
Mirror 3 - Click here
System Version 2.6.60
Mirror 1 - Click here
Mirror 2 - Click here
Mirror 3 - Click here
System Version 2.6.40
Mirror 1 - Click here
Mirror 2 - Click here
Mirror 3 - Click here
System Version 2.6.23
*WARNING* This update appears to cause unrecoverable bricking of the unit when changing model or MCU. *WARNING*
Mirror 1 - Click here
Mirror 2 - Click here
Password
"4.2.2" Versions
Please note that these are actually Android 4.1, but the menu text has been changed to "4.2.2"
System Version 2.7.11
Mirror 1 - Click here
System Version 2.7.22
Mirror 1 - Click here
System Version 2.7.26
Mirror 1 - Click here
System Version 2.7.26-2
Mirror 1 - Click here
System Version 2.7.26-3
Mirror 1 - Click here
Changelog (Unofficial)
System Version 2.7.29
Unknown
Previous Versions
System Version 2.7.28
Unknown
System Version 2.7.11
Unknown
System Version 2.7.9
Unknown
System Version 2.7.4
Unknown
System Version 2.6.96
Unknown
System Version 2.6.93
Unknown
System Version 2.6.77-2
Unknown
System Version 2.6.77
Unknown
System Version 2.6.73
Unknown
System Version 2.6.70
When changing panel keys or steering wheel controls, the notification bar is still displayed
New menu option for backing up and restoring both panel key and steering wheel control mappings
System Version 2.6.68
Homescreen design reverted back to four large widgets per page
App icon for SWC settings
Setting in "Extra Settings" to force USB1.1
Factory reset is password protected (See FAQ)
Developer options are password protected (See FAQ)
System Version 2.6.62
Bluetooth icon in notification bar (appears Bluetooth is turned on by default now, cannot turn it off)
Bluetooth menu, accessed via an app, has "SEARCH FOR DEVICES" and visibility option, however nothing functions when pressed
All extra applications removed (ES File Explorer, GPS Test Plus, QuickPic)
WiFi Hotspot can be activated without re-plugging the 3G dongle in
Background is winter-themed
System Version 2.6.60-2
New home screen design
System Version 2.6.60
Default applications changed back to original theme
APK Installer application install by default
Bluetooth renamed back to Phone
Screenshot feature now fixed and works correctly
System Version 2.6.40
Larger notification bar
GPS icon removed from notification bar
Home, back, menu, and screen off buttons added to notification bar
Default applications changed to red theme (music player, radio, video player, phone)
Phone application renamed to Bluetooth
ES File Explorer installed by default
GPS Test Plus installed by default
QuickPic installed by default
Non-functioning screenshot featured added in settings menu
Bugs / Issues
KeyUnresolved
Workaround
Resolved​
Updated 2014.01.20Newest issues will be put at the top, solved issues, or issues with workarounds will be moved to the bottom.
Unable to remove applications that are device administrators without factory reset due to security menu being disabled.
Many applications are unable to "see" the MicroSD card, so the choice of music players is limited. The mount point is "mnt/usb/mmcblk1p1".
Despite selecting "Front Speakers Only" for navigation sound, the sound comes out of the rear speakers too. Setting to "Front Right" appears to work correctly.
Bluetooth is restricted to phones only. (Unsure if this is hardware or software related, talking to manufacturer suggests hardware limitation).
Bluetooth dongles do not work.
There is a "pop" from the speakers sometimes when changing applications that control sound, this is extremely obvious if you have a subwoofer installed. It happens when the unit is turned on, and when going from mute, to a volume level.
Screen brightness when buttons illuminated is not user-configurable. This means it may be too bright or dark depending on the conditions. For example, when it is only mildly dark outside, and you have your lights on, the screen is very hard to see.
Workaround: Enable constant illumination from the "Extra Settings" menu by setting the option to "CLOSE", this will set the keys to always illuminate. Then use an application such as Twlight to control the screen brightness based on sunset and sunrise.
Random issue when downloading large applications. The progress will usually get to more than 50%, and then no progress is made.
Workaround: The only fix I have found so far is to stop the download, reboot the unit, start the download, and repeat until download continues. It should download from where you cancelled. This appears to be caused by a limited download cache size.
Steering wheel controls only work with default applications.
Resolved: Open the radio (this does not appear to work with the music app), then hold the back arrow in the bottom right hand corner, the app will close, allowing steering wheel controls to function with other apps.
Most recent default application always opens on boot and continues to play, even if paused. This includes the radio, music, video, and iPod applications.
Resolved: Open the radio (this does not appear to work with the music app), then hold the back arrow in the bottom right hand corner, the app will close, and no default app will open on boot.
USB Debugging is password protected.
Resolved: The password is "[email protected]". Credit to @nikko82
Screenshot feature does not work, when trying to save the screenshot, a save error appears.
Resolved: This is solved in system version 2.6.60.​
Root
Root is now possible thanks to help from some great XDA members.
Credits to @WonderEkin for the Root My AN-21 U app and @bmj67 for supplying SettingsProvider.apk
2014.06.06 - A new rooting tool named Baidu Root has been added to the repository. You can use this tool as an alternative to following the guide below.
Files required
Root My AN-21 U - [ Mirror1 | Mirror2 ]
Root My AN-21 U has been updated since this video was taken, the app should now correctly show "Step 2".
Download the required files above.
Install Android Terminal Emulator on your unit.
Open the AUX application and close it.
Install Root My AN-21 U and create a link on the homescreen.
Run Root My AN-21 U and press the "Step 1" button.
Reboot the unit.
Once the unit has rebooted the screen will likely be black, press the Home button to display the homescreen.
Run Root My AN-21 U and press the "Step 2" button.
Reboot the unit.
Open Android Terminal Emulator and run the following commands.
Code:
su
rm /data/local.prop
Reboot the unit.
FAQ
Can I root this unit?
Please see the "Root" section above.​
HELP! My unit is stuck in a boot-loop!
Place the update files on your MicroSD card (see "Firmware Updates" section). Then turn the unit on whilst holding down the volume knob and home button. This should start the update process.​
Can I use Bluetooth OBD devices with Torque?
Not at the moment, Bluetooth is only for phones and Bluetooth dongles do not work.​
Does it have the full Play Store?
Yes, it has the Play Store and all compatible applications are available for download.​
What is the boot time?
18 seconds to home screen, 22 seconds until music application starts. If you use the radio application rather than the music player, the radio sounds as soon as the unit receives power.​
Where can I buy one?
There are many listings on eBay/AliExpress under the search term "android 4.1 car", some have resistive, and some have capacitive screens. There is also the mention of a faster 1.2GHz dual core, however the unit actually has a 1GHz dual core CPU.​
How good is the radio?
The radio reception seems fine, as does the sound quality.​
Is there a Wiki page?
Yes.
Tonghai Create AN-21 U Wiki​
What is the USB Debugging password?
[email protected]​
What is the Factory Reset / Developer Options password?
7890​
What is the Extra Settings password?
123456​

Orisai said:
Android doesn't have NTFS support, let alone EFS which is built on top of Microsoft's filesystem, but it's capable of using the same cypher algorithms as EFS (AES, SHA, DES) though. The only thing Android needs to be able to decrypt them during the upgrade process, is the manufacturer's or firmware developer's public key, which I believe is stored among the system root certificates.
This, providing EFS or a compatible file encryption mechanism was used to encrypt those files.
Click to expand...
Click to collapse
If we think about it, Android isn't even part of the equation reading those files really, just a bootloader or the unit's firmware. So the decription layer would have to be built into the bootloader or the raw firmware (read assembly or whatever)... I highly doubt it would be EFS.
As another observation, all filenames remain the same across the two updates and only one file has changed (and it's name remains the same. There goes the hash/sum/md5 like naming theory)...
Code:
diff android-4.1-2.6.40/ android-4.1-2.6.60/
Binary files android-4.1-2.6.40/8e3513e2-ea4a-11e2-8a0f-000c29ba27c0 and android-4.1-2.6.60/8e3513e2-ea4a-11e2-8a0f-000c29ba27c0 differ
That I'm guessing is our system file
@tin2001 @Orisai @chris.r.r <- in case you missed the switch to new thread

sciallo said:
If we think about it, Android isn't even part of the equation reading those files really, just a bootloader or the unit's firmware. So the decription layer would have to be built into the bootloader or the raw firmware (read assembly or whatever)... I highly doubt it would be EFS.
As another observation, all filenames remain the same across the two updates and only one file has changed (and it's name remains the same. There goes the hash/sum/md5 like naming theory)...
Code:
diff android-4.1-2.6.40/ android-4.1-2.6.60/
Binary files android-4.1-2.6.40/8e3513e2-ea4a-11e2-8a0f-000c29ba27c0 and android-4.1-2.6.60/8e3513e2-ea4a-11e2-8a0f-000c29ba27c0 differ
That I'm guessing is our system file
@tin2001 @Orisai @chris.r.r <- in case you missed the switch to new thread
Click to expand...
Click to collapse
Yes, as you say, it is the only file that changes between the updates, and it is also the largest file so I think we can assume this contains the data we want.
Looking at the third update I have, it seems that file is again the only one changed. I will be testing this update out and uploading it shortly.
The file names must have some importance, as otherwise they could just call them "system.img", or something simple, but still encrypt them.

KID52 said:
Many applications are unable to "see" the MicroSD card, so the choice of music players is limited.
Click to expand...
Click to collapse
Have you tried to see if it will read an external mass storage attached to usb? (usb stick, card reader, 2.5" portable hard drive)?

sciallo said:
Have you tried to see if it will read an external mass storage attached to usb? (usb stick, card reader, 2.5" portable hard drive)?
Click to expand...
Click to collapse
The default application yes, although I did not try what happens with multiple USB drives. The doubleTwist music player was unable to read a USB memory stick, or the MicroSD card. The actual unit seems to be able to cope with multiple memory sticks, I have tried three, and all were accessible using the ES File Explorer application.
The internal storage is mounted at "mnt/sdcard".
The MicroSD card is mounted at "mnt/usb/mmcblk1p1".
USB memory sticks are mounted at "mnt/usb/sda1", "mnt/usb/sdb1" etc.

KID52 said:
Many applications are unable to "see" the MicroSD card, so the choice of music players is limited. The mount point is "mnt/usb/mmcblk1p1".
Click to expand...
Click to collapse
Have you checked for the presence of a hidden file called, ".nomedia" in the MicroSD card? The presence of this file will let most media players to skip this path for scanning for multimedia files.

donaldta said:
Have you checked for the presence of a hidden file called, ".nomedia" in the MicroSD card? The presence of this file will let most media players to skip this path for scanning for multimedia files.
Click to expand...
Click to collapse
Yes, this file is not present.

KID52 said:
The default application yes, although I did not try what happens with multiple USB drives. The doubleTwist music player was unable to read a USB memory stick, or the MicroSD card. The actual unit seems to be able to cope with multiple memory sticks, I have tried three, and all were accessible using the ES File Explorer application.
The internal storage is mounted at "mnt/sdcard".
The MicroSD card is mounted at "mnt/usb/mmcblk1p1".
USB memory sticks are mounted at "mnt/usb/sda1", "mnt/usb/sdb1" etc.
Click to expand...
Click to collapse
You might want to try a few different players to see if it's the unit or the player...
From http://www.doubletwist.com/help/question/how-do-i-switch-from-internal-storage-to-sd-card/
We recommend only using one volume to store your media. If you choose the memory card, please do not store media files on the internal storage location.
Also, there is not standardized way of implementing SD card support so each manufacturer implements SD card supportly differently. This is why doubleTwist may not always support the SD card on your device.
Devices reported by users to not work includes the following devices:
LG Motion 4G
LG Optimus L5
LG Optimus LTE2
LG Optimus 4X HD
Motorla Razr i
Motorla Razr M
Click to expand...
Click to collapse
I don't know if you can without root but you should be able to as normal user in a virtual terminal link /mnt/sdcard to /sdcard
Code:
ln -s /mnt/sdcard /sdcard
... Something to try. I think it won't survive reboot, but if it works you can possibly make a script for it to happen on boot.

sciallo said:
You might want to try a few different players to see if it's the unit or the player...
From http://www.doubletwist.com/help/question/how-do-i-switch-from-internal-storage-to-sd-card/
I don't know if you can without root but you should be able to as normal user in a virtual terminal link /mnt/sdcard to /sdcard
Code:
ln -s /mnt/sdcard /sdcard
... Something to try. I think it won't survive reboot, but if it works you can possibly make a script for it to happen on boot.
Click to expand...
Click to collapse
It depends on the player.
All file explorer applications such as ES File Explorer, and Astro, have no issues seeing the files. In fact, if you choose an MP3 file and select the player of your choice to open the file, it will indeed open and play, however it does not show up in the list of available songs.
One example of a player than can see the files is Poweramp.
"/mnt/sdcard" is already linked to "/sdcard", but this is the internal USB storage, not external. Perhaps it can be unlinked, and the MicroSD card, "mnt/usb/mmcblk1p1" linked there instead.

Orisai said:
Peter's listing on eBay mentions the headunit supports wireless keyboards, which are bluetooth devices. Also, being it Android 4.1, it should support USB OBD2 scanners like this one on Amazon:
http://www.amazon.com/OBDLink-OBD-II-Interface-Adapter-425101/dp/B002M07XHO
This one is pretty expensive compared to the bluetooth ones, but I've seen it used by dealers to diagnose their cars during repairs.
Click to expand...
Click to collapse
Best to keep discussion for the 4.1 unit in this thread now.
My keyboard is not Bluetooth, it has a small receiver that is probably 2.4GHz, and it works fine.
Unfortunately there is no Bluetooth menu on the device. However, there are a few interesting quirks with the unit, one being that the security menu is disabled, however, if you try to enable something (I forget what, maybe storing location data or something), it tells you that a lock code must be set, so you press okay, and what opens? The security menu...
I will try installing Torque at some point, as on my phone it requests to turn on Bluetooth, so maybe it will access the menu on the unit. I don't have much hope for this working though.
Perhaps the USB device will work, but I do not have one, and do not intend on buying one at that price.
Orisai said:
Have you tried a Linux compatible bluetooth dongle yet? I believe, if the headunit supports external wireless keypads, then BT dongles should work, as well as anything connected through them.
Click to expand...
Click to collapse
Yes, I've tried a couple that I had lying around.
If you can recommend a specific one that isn't too expensive I may trying buying to see if it works.

KID52 said:
Best to keep discussion for the 4.1 unit in this thread now.
My keyboard is not Bluetooth, it has a small receiver that is probably 2.4GHz, and it works fine.
Unfortunately there is no Bluetooth menu on the device. However, there are a few interesting quirks with the unit, one being that the security menu is disabled, however, if you try to enable something (I forget what, maybe storing location data or something), it tells you that a lock code must be set, so you press okay, and what opens? The security menu...
I will try installing Torque at some point, as on my phone it requests to turn on Bluetooth, so maybe it will access the menu on the unit. I don't have much hope for this working though.
Perhaps the USB device will work, but I do not have one, and do not intend on buying one at that price.
Yes, I've tried a couple that I had lying around.
If you can recommend a specific one that isn't too expensive I may trying buying to see if it works.
Click to expand...
Click to collapse
KEEP IN MIND ALL MY EXPERIENCE IS WITH THE 2.3 OUKU but this might help:
Usb Keyboard is natively supported on all of them, if it's wireless with its own dongle (not bluetooth) that's just all it is, a usb keyboard.
For the bluetooth menu install Quick Bluetooth Lite from Market. I was lucky enough one of the dongles I had lying around worked (one didn't) mine sais "KINIVO" on it.
There is a similar app on the market to use bluetooth keyboards.
...but with both of the above it all depends on the ability to add a BT dongle, the internal one is not visible to android as I understand it (and as it was with the other units OUKU, winCE etc.
I have that exact ODBII reader mainly because I wanted a reliable one that could get the most codes... off topic here, but there is differences. Torque forums are a good resource. I haven't tried USB with it yet. There is cheap usb only out there, but I guess there is two different kinds of usb-to-serial chips... you MIGHT have one of the two installed if they included it....
Bottom line, it doesn't matter what Android supports. What matters is what modules the chinese manufacturer compiled in the kernel or included as a loadable module...
You could get a hint looking at the /home/rick/OUKU/stock/4.1/test/lib/modules/ folder...

sciallo said:
KEEP IN MIND ALL MY EXPERIENCE IS WITH THE 2.3 OUKU but this might help:
Usb Keyboard is natively supported on all of them, if it's wireless with its own dongle (not bluetooth) that's just all it is, a usb keyboard.
Click to expand...
Click to collapse
Yes, exactly my thoughts.
sciallo said:
For the bluetooth menu install Quick Bluetooth Lite from Market. I was lucky enough one of the dongles I had lying around worked (one didn't) mine sais "KINIVO" on it.
There is a similar app on the market to use bluetooth keyboards.
Click to expand...
Click to collapse
Thank you for the advice, I will try it out soon, see what happens.
The info you have regarding the OUKU unit may well be relevant to this new one too.

KID52 said:
Perhaps the USB device will work, but I do not have one, and do not intend on buying one at that price.
Click to expand...
Click to collapse
No, you don't have to buy such devices just for testing purposes. I have plans on buying one for my Santa Fe i45, because USB OBD2 scanners are faster and way more reliable that BT ones, and I'll need it to plug directly into my laptop or the OTG adapter in my SGS4.
KID52 said:
Yes, I've tried a couple that I had lying around.
If you can recommend a specific one that isn't too expensive I may trying buying to see if it works.
Click to expand...
Click to collapse
Try to plug them when your stereo is turned off. I recall someone saying that you have to plug in WiFi and 3G dongles with the headunit turned off, so they get detected by Android when it boots up. Perhaps this is the case with BT dongles too.

Orisai said:
Try to plug them when your stereo is turned off. I recall someone saying that you have to plug in WiFi and 3G dongles with the headunit turned off, so they get detected by Android when it boots up. Perhaps this is the case with BT dongles too.
Click to expand...
Click to collapse
Hmm, I said that. I put it in the main post too. Maybe someone said it about OUKU too, I don't know.
But yes, I do usually turn off the stereo and plug the device in before booting.

Then it must be like sciallo said, kernel has to be compiled with the required modules to make bluetooth dongles work, much like Hal9k's firmware.

KID52 said:
Yes, I've tried a couple that I had lying around.
If you can recommend a specific one that isn't too expensive I may trying buying to see if it works.
Click to expand...
Click to collapse
Might want to get a terminal for android, like Android Terminal Emulator. Then you can check to see what sort of linux modules/drivers are pre-installed. For example:
Code:
$ lsmod
lsmod
blackberry 1084 0 - Live 0xbf10a000
cdc_acm 15311 0 - Live 0xbf100000
sierra 9201 0 - Live 0xbf0f7000
option 13120 0 - Live 0xbf0ea000
usb_wwan 8010 1 option, Live 0xbf0e2000
hso 29290 0 - Live 0xbf0d3000
tnx_mxt_ts 15886 0 - Live 0xbf0c9000
cp210x 10931 2 - Live 0xbf0c0000
pl2303 10925 0 - Live 0xbf0b7000
usbserial 26415 8 blackberry,sierra,option,usb_wwan,cp210x,pl2303, Live 0xbf0a8000
88w8688_wlan 362475 1 - Live 0xbf041000
tun 13189 2 - Live 0xbf037000
omap3_isp 97716 0 - Live 0xbf014000
omap_hsmmc 14041 0 - Live 0xbf000000
$
This will give you an example of modules installed. In the above example is from the Parrot Asteroid Smart. The output gives you an idea of the sort of devices that you'll be able to use with the unit. For example, there are the cp210x and pl2303 drivers for Serial UART to USB devices. So, for example one could use a USB ODB2 cable as long as they use either a Prolific or Silcon Labs UART.
KID52 said:
I will try installing Torque at some point, as on my phone it requests to turn on Bluetooth, so maybe it will access the menu on the unit. I don't have much hope for this working though.
Perhaps the USB device will work, but I do not have one, and do not intend on buying one at that price.
Click to expand...
Click to collapse
Something that is not well known is that Torque Pro supports USB ODB2 cables. The product linked earlier from Amazon is an ODB2 scanner by Scantool which is a professional model. (Analagous to buying a Fluke Multimeter vs an Innova) They do have another model that costs a little bit more and supports USB and Bluetooth or even WiFi if you prefer. But, there are some less expensive knock offs that you can get for less a fraction of the price. So, if you know the AN-21 U supports a particular Serial to USB driver then you might be able to use one with Torque Pro. The nice thing about USB ODB2 cables over Bluetooth ones is that the data stream is closer to real time and has less lag than a BT ODB2 adapter around the same price.
KID52 said:
Unfortunately there is no Bluetooth menu on the device. However, there are a few interesting quirks with the unit, one being that the security menu is disabled, however, if you try to enable something (I forget what, maybe storing location data or something), it tells you that a lock code must be set, so you press okay, and what opens? The security menu...
Click to expand...
Click to collapse
Some places hide various menus from the settings control panel, but you can often them bring them up using intents through Activity Manager. However, finding the available intents sometimes requires root but you do not need to be root to execute them. For example:
Code:
$ su
su
# dumpsys package com.android.settings | grep BluetoothSettings
dumpsys package com.android.settings | grep BluetoothSettings
4068b7e0 com.android.settings/.bluetooth.BluetoothSettings filter 4068bc48
4068b7e0 com.android.settings/.bluetooth.BluetoothSettings filter 4068ba78
4068b7e0 com.android.settings/.bluetooth.BluetoothSettings filter 4068ba78
# exit
exit
$ am start -n com.android.settings/.bluetooth.BluetoothSettings
am start -n com.android.settings/.bluetooth.BluetoothSettings
Starting: Intent { cmp=com.android.settings/.bluetooth.BluetoothSettings }
$
However, not all Bluetooth software conforms to the Android standards and will force close if it doesn't. In most cases if a Bluetooth driver is installed then a good app to get is Bluetooth Auto-Pair. It allows the manual settings to pair various devices even if the manufacturer implements an artificial limitation on the devices that they will support.

donaldta said:
Snip.
Click to expand...
Click to collapse
You definitely seem to know your stuff!
That is an extremely informative post, thank you.
I'll take another read tomorrow and do some tests on the unit, see what I can find out.

Orisai said:
Android doesn't have NTFS support,
Click to expand...
Click to collapse
This is actually a pretty bad blanket statement. It actually depends on the Linux modules included with the Android device. And in fact, I played with an Android TV device that had fuse.ko modules installed and supported NTFS partitions. The best way to tell what sort of filesystem that your Android device supports is through "/proc/filesystems".
Code:
$ cat /proc/filesystems
cat /proc/filesystems
nodev sysfs
nodev rootfs
nodev bdev
nodev proc
nodev cgroup
nodev tmpfs
nodev sockfs
nodev usbfs
nodev pipefs
nodev anon_inodefs
nodev devpts
cramfs
squashfs
nodev ramfs
vfat
msdos
nodev mqueue
nodev mtd_inodefs
nodev oprofilefs
nodev ubifs
$
The first column signifies whether or not the filesystem is currently present on your android device and the second column shows all the various types that it supports.
---------- Post added at 11:06 PM ---------- Previous post was at 10:49 PM ----------
KID52 said:
I'll take another read tomorrow and do some tests on the unit, see what I can find out.
Click to expand...
Click to collapse
While you're at it, you might consider installing SRT AppScanner. If the device is vulnerable to Master Key either exploit bug 8219321 and/or 9695860 then there's a good chance that Cydia Impactor can root your device.

donaldta said:
While you're at it, you might consider installing SRT AppScanner. If the device is vulnerable to Master Key either exploit bug 8219321 and/or 9695860 then there's a good chance that Cydia Impactor can root your device.
Click to expand...
Click to collapse
I thought you needed to connect your device to a PC to use Cydia Impactor? Also, not sure if it would be required, but USB debugging is password protected.

KID52 said:
I thought you needed to connect your device to a PC to use Cydia Impactor? Also, not sure if it would be required, but USB debugging is password protected.
Click to expand...
Click to collapse
Well, technically you don't have too. It works off of Android Debug Bridge and can work over WiFi or USB. However, it does need debugging to be enabled. I missed the part that it is password protected. However, the masterkey scripts might still be able to help gain access to root if it hasn't been patched on the device.

[Tutorial] How to use your Windows Phone as a head tracking device for PC games

What you need
A Windows Phone with accelerometer and compass (magnetometer). (Gyroscope not required - but makes every movement smoother and more accurate)
App Headtrackr ($2, full featured trial available)
PC
Opensource software opentrack
A pc game that supports FreeTrack/TrackIR or a similar protocol (e.g. Star Citizen, Elite: Dangerous, Euro Truck Simulator 2 and many more)
headband / hair tie / tape or something similar strap your phone to your head / headphones / headset (see pictures at the end for examples)
Video of head tracking with Headtrackr in Star Citizen:
Tutorial/Instructions also available as PDF and Word document here: www.headtrackr.com/instructions
And available in german here: www.headtrackr.de/instructions
First of
Please note, Headtrackr only transmits your movements to your PC. The desktop application opentrack then relays the movements to your game via different protocols (most commonly freetrack). I, the developer of Headtrackr, am not affiliated with the developers of opentrack or freetrack.
If a game does not support head tracking you have to contact the developer of that game and ask them to implement freetrack! I will not be able to do anything.
To test whether the game you would like to use head tracking with works, you can install the free trial version of Headtrackr!
Instructions
Setup
Install Headtrackr
Preconfigured download of opentrack 2.3 rc5: View attachment opentrack_2.3_rc5_d.zip Onedrive mirror: here.
The latest version of opentrack can always be downloaded from the official site here.
Please note: All tested versions will be listed below. It’s not guaranteed newer untested versions work with headtrackr!
Open the Zip file and extract it to a location of your liking. No installation needed.
Configuration
You can download a preconfiguration file here (right click -> save as)
Save it to the “settings” folder in your opentrack install folder and you can skip the opentrack config steps
Start opentrack.exe
Opentrack configuration steps
Select “UDP sender” as Tracker.
Tap on the “…” button on the right to select a port, in this example we’ll be using “4242” (If there are any problems with receiving data, change the port!).
If you have a firewall, you might need to allow this port in your firewall settings.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
On “Protocol” select “freetrack 2.0 Enhanced” for most games. Some games only support other protocols but freetrack is the most common.
On “Filter” select “Accela”. Tap on “…” and set a small value for both “Rotation smoothing” and “Translation smoothing” as seen below. This will filter out any inaccuracies from the sensors on your phone and make everything smoother.
Now on to the “Mapping” settings:
On the tabs “Yaw”, “Pitch” and “Roll” you can select a movement mapping. At the default mapping settings there is a 1:1 mapping, meaning you have to turn your head 180 degrees to move the view in your game 180 degrees. (This of course is not feasible since you can’t see the monitor anymore).
For all three I suggest a setting of 100:180 (see screenshots below)
Now on to settings that depend on how you strap your phone to your head and on the game you want to play
On the “Options” tab of the “Mapping” settings there are the “Output remap” settings.
Set Yaw, Roll and Pitch so, that your character follows your movements. If for example your character looks right, while you look left, you have to check “Invert” on “Yaw”. Same for looking up/down (Pitch) and rolling your head.
(You can also use the small octopus as a test before you start your game. It should move exactly like your in-game character)
Click the “Save” button to save these as your default settings.
Whenever you want to start tracking or testing, click “Start”.
Phone configuration steps
Unfortunately Windows Phone does not allow tracking movement with the display turned off. Because the display is one of the biggest battery drainers I would recommend the following (however, it is not needed for the app to work):
Turn your display brightness to the lowest setting (not needed with OLED displays)
Turn on Quiet mode, battery saver and/or airplane mode. This saves power and also ensures no interruption while playing.
Headtrackr setup
Make sure your phone’s WiFi is on and connected to the same network your PC is connected to.
Start Headtrackr
Tap on “Configuration” and enter your PC’s IP address and the port that was selected in opentrack.
That’s it, now you can test your connection:
Click on start in opentrack and then on “test connection” in Headtrackr. You should see the octopus turning left and right. If not, your connection is not working. Make sure you have entered the correct IP address / Port and both phone and pc are connected to the same network.
Save the configuration by pressing “Confirm”.
That’s it, you are now ready to start.
Tips and Tricks
Use the head shaking feature of Headtrackr to re-center your view in game. Simply shake your head and one second after the audio cue has played your view will take your current orientation as the new center value. In settings you can adjust the sensitivity of the head shake detection.
 
Known problems with opentrack and games
Tested opentrack versions: opentrack 2.3 rc5 and opentrack 2.3 rc9.
Please note: opentrack 2.3 is still in development and not withour errors.
Known problems with opentrack 2.3 rc5
“Output remap” can map one axis to another. (E.g. you can’t set that pitch means roll and roll means pitch)
Known problems with opentrack 2.3 rc9
On opentrack 2.3 rc9 and higher you have to first click “Start” in opentrack and then on the phone via “START TRACKING”. If you start tracking on your phone first, the re-centering feature of Headtrackr doesn’t work correctly.
Known problems with Star Citizen
At this moment, Star Citizen is still in alpha. Sometimes headtracking does not work. Restarting Star Citizen, opentrack and sometimes your pc can fix that problem. (Tests have shown that Star Citizen works better with opentrack 2.3 rc5 than the current newer versions)
Problem: No Text-To-Speech output in Headtrackr
Speech for your language has to be installed. Go to system settings -> language and make sure of that. If it’s not installed you can do that there.
Examples of how you can easily strap your phone to your head
Why did I develop Headtrackr?
I have always waited for a viable virtual reality headset. With Oculus Rift we might get one in a few months/years. But I just couldn't wait that long. Unfortunately the next best thing (TrackIR) costs way to much for me (180€). (Or rather: I think it costs way to much for the features it delivers)
I already had a Windows Phone and multiple apps released, so I developed Headtrackr as an alternative to TrackIR.
You might ask yourself: Why is Headtrackr so much cheaper than TrackIR? It must be pretty bad.
No, TrackIR is so expensive because you pay for the hardware as well as the software. With your phone you already have all the hardware you need and only need the software!
I personally can't go back to playing games like Star Citizen without head tracking.
If you find any bugs, have any questions or have any suggestions feel free to contact me in the comments, per pm, mail or from inside the app.
Links
Download: http://www.windowsphone.com/s?appid=11777f9d-9261-42e6-acc3-84e3046703bb
[QRCODE]http://www.windowsphone.com/s?appid=11777f9d-9261-42e6-acc3-84e3046703bb[/QRCODE]
http://www.headtrackr.com and http://www.headtrackr.de
The developer: www.dehodev.com

hi i am trying to use headtrackr with my phone acting both as an HMD/vr.headset and as an gyroscope data sender for opentrack..
my problem is that i can get headtrack to work in potrait mode but not in landscape with screen facing my face..
would be really awesome if Headtrackr could receive an update to fix this problem it would act not only as a headtracker device for freetrack games bu also for VR games !!
i hope that this can happen some day awesome app btw

greymouser said:
hi i am trying to use headtrackr with my phone acting both as an HMD/vr.headset and as an gyroscope data sender for opentrack..
my problem is that i can get headtrack to work in potrait mode but not in landscape with screen facing my face..
would be really awesome if Headtrackr could receive an update to fix this problem it would act not only as a headtracker device for freetrack games bu also for VR games !!
i hope that this can happen some day awesome app btw
Click to expand...
Click to collapse
I noticed this problem a few months ago. I wrote a UWP version of Headtrackr with the goal to fix this problem and make it possible to work with VR games. The current version is still a WP8 app that can't work when it's not in the foreground, so it can't have any other app open (for streaming your pc's video output).
Unfortunately I hit a snag that I was unable to figure out. (Worked on it for 3-4 weeks) The sensor API in Windows 10 has this problem where when your phone is in landscape and you look in certain directions it suddenly changes axises and angles. I was unable to find any documentation on this issue. Why this happens, how this happens or how to compensate for it. It's one of the most frustrating things I have encountered. This problem did not exist in Wp7.5 or Wp8. I was planning on taking another look at it in a few weeks.
I was really confused, because I was reading everywhere on how this api is meant for VR and AR but could'nt find a single example that actually worked correctly without those issues.

i see so facing two problems here,
here is an idea how about adding VNC capability to headtrackr, this way there will be no reason to switch to a streaming app..
i also found this article seemed relevant.. especially the sensorbatching feature and readingtransform-initialize..
WP VR is really a lackluster unfortunately :/

Yeah, I solved the problem with background head tracking with the UWP app. That works by registering the app as an "ExtendedExecution" with LocationTracking as its type which allows the headtracking code to continue running while the streaming app is in foreground. (I also thought about creating a combined Headtracking and Streaming app, but for the time being that would take to long)
The article you linked is unfortunately useless. I read it a few months ago. At first I thought that would be the solution but in reality it doesn't change anything. Since then Microsoft seems to have released some online courses on the subject (https://msdn.microsoft.com/en-gb/mt715765.aspx). I'll go through them tomorrow to see how they solved the sensor problem.
Believe me, I would be more than happy to find a solution to this. I have been looking forward to try one of my devices as a VR device for some time.

greymouser said:
i see so facing two problems here,
here is an idea how about adding VNC capability to headtrackr, this way there will be no reason to switch to a streaming app..
i also found this article seemed relevant.. especially the sensorbatching feature and readingtransform-initialize..
WP VR is really a lackluster unfortunately :/
Click to expand...
Click to collapse
I've created a stackoverflow post describing the problem with example source code. Hopefully someone can point me to a solution because unfortunately I still couldn't find any solution for this:
https://stackoverflow.com/questions...eird-undocumented-sensor-reading-jump-when-fa

Head tracking eh? Pretty slick! Keep up your progress guys.

[JAX SLX7786] Android 4.4 Head Unit - RK3188, 1GB RAM, 1024x600

This thread is dedicated to discussion, research and mods for the JAX SLX7786 Head Unit range.
What is it?
The JAX SLX7786 is a series of touchscreen Android 4.4 head unit. The most common size reported is 10.1", although 9" models have been seen in the wild.
The common characteristics of these head units are:
Specifications
OS Android 4.4.4
CPU RK3188 series (PX3)
Cores 4 cores
MHz 1.6GHz
RAM series DDR3
RAM capacity 1G
ROM series iNand Flash
ROM capacity 16G
Double SD card/MuIti-Media Maximum capacity: 64G
Screen Size Different Car DVD model different size (Edit: this particular one is 10.2")
Screen Resolution 1024*600
Screen Panel CTP (Capacity Touch Panel)
GPS module GPS/Beidou
WIFI Built-in(IEEE 802.1 lb/g/n)
3G Unicom/Telecom/Moblie(Adapter)
USB(Port) 3 pieces USB2.0(Extensible)
SD card slot 2 pieces
Moblie HD Support FAT/NTFS
Who makes them?
Good question. As far as I can gather it's a similar arrangement to the MTCB units; a number of manufacturers sell the unit based off of a central reference design. Who makes the reference design, and therefore who holds the kernel source, I do not know.
How can I get one?
The main place I have seen these for sale has been Aliexpress; most of the 10.1" units on the market seem to be this particular unit/ROM. The only other 10.1" units on the market (as far as I'm aware) are Joying units and pretty clearly marked as such.
The only surefire way to make sure it is a SLX7786 unit is to get the seller to send you a photo or screenshot of the build number under the System -> About page and check whether it matches the build mentioned below.
I think I already have one. How can I tell?
The easiest way to tell is looking at the System -> About page on the unit. If your build number contains the following then you have a SLX7786 unit:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
JAX or 885 as first three characters, and
Contains WQ-16EN
The full details of the build number are as follows:
[VENDOR]-[YY][MM][DD][HH][MM][0G]-WQ-16EN-[CARMAKE]
Where:
[VENDOR] = JAX or 885. Unsure why this changes from unit to unit, assuming different vendors.
[YY] = Build year, [MM] = build month and so on.
[0G] = String may or may not appear depending on model
[WQ] = Assuming this is OEM, like KLD and JY is for MTCB units
[16] = Not sure
[EN] = English ROM
[CARMAKE] = M6 for Mazda 6, ACCORD8 for Honda Accord, etc
How can I help XDA development?
Ask the seller for the most recent update, citing the bugs listed below. Share link with me via PM, or upload to Google Drive and PM me the link.
Do a full backup with Partitions Backup (excluding /user and /userdata), upload to Google Drive and PM me the link.
Take pictures of hardware internals
Help us solve who designed these units!
Help us port TWRP recovery to these units!
Help us port CM to these units!
Help us build a custom kernel from the Rockchip source!

Bugs, quirks, guides and FAQs
Bugs and quirks
Can't switch screen off.
Can't map steering wheel Vol+ and Vol- at the same time Need to select "Mode 2" under wheel controls.
Can't run >3 apps simultaneously Switch to a 3rd party launcher such as Car Launcher Pro to fix this.
Auto-brightness doesn't work Doesn't appear to be an auto-brightness sensor installed.
Can't use other audio sources and apps simultaneously.
Can't change default music app
[*]Can't access ADB or Fastboot, despite ADB daemon running!
Guides
How to flash update.img files with SD cards
FAQs
What's the password for the JAX system page? 1234.
How do I install SuperSU? Install kylemd's custom ROM.
How do I get Xposed? Take your pants off Install kylemd's custom ROM.
How do I get Viper4Android? Install kylemd's custom ROM.
Tools and utilities
Rockchip Drivers (by SergioPoverony)
RK3xxx Firmware Tools version 5.99.07 (by SergioPoverony)
Rockchip SD Card Firmware Writer 1.43

What ROMs are available for it?
Stock ROMs
Please note that these are for development purposes only. Please don't attempt to flash these as you may kill your unit. Proceed at your own risk.
JAX1604121505G-WQ-16EN (thanks to @54metra)
JAX1604111430G-WQ-16EN-ACCORD8 (thanks to @rizu3544)
885-1605071020-WQ-16EN-M6 (thanks to me)
885-1611101628-WQ-16C (thanks to me)
Custom ROMs
Please note that these are for development purposes only. Please don't attempt to flash these as you may kill your unit. Proceed at your own risk.
Modded stock ROM by me (ROM details)

Software and apps
IntentKeys - makes track skip, pause and voice keys work.

kylemd said:
Reserved, last one.
Click to expand...
Click to collapse
Dear kylemd,
Is it possible to change the existing default music player with new music player and default Home screen with new Home screen ?
Because, Music Player looks very old and the home screen looks laggy.

rizu3544 said:
Dear kylemd,
Is it possible to change the existing default music player with new music player and default Home screen with new Home screen ?
Because, Music Player looks very old and the home screen looks laggy.
Click to expand...
Click to collapse
Music player: Yes, although you can't use steering wheel controls to skip tracks. I'm using Poweramp.
Home screen: yes, just install another launcher and it will ask you if you want to change launchers the first time you press home. Select the one you downloaded and click "always". Personally I'm using Car Launcher Pro and it works fantastic (and has on screen music controls) although it's a paid app. See the picture of my setup for a preview.

Hey i would like to add some technical issues i have with this rom.
1.)I like to confirm that you can not use the back and forward track buttons on other apps than the stock app provided.
2.) Under the car settings jax menu, entering the password 1234 grants you access to additional features. My gain controls in these menu do nothing. Bluetooth source isn't any louder, aux etc when adjusted.
3.)Was not able to change the default music app with a skin version or anything. (tried to remove via root, the installed a musicskin.apk in the system folder.
4.) Steering wheel controls is buggy, had to fiddle with it on different days until all the buttons are map, then no problem
5.)Viper4Android does not work with the stock apps (radio,bt, music, video). Works on some apps when i first installed it, reinstall doesn't work on some. Buggy
1.) Was able to root with KingRoot.

nguyentoogood said:
Hey i would like to add some technical issues i have with this rom.
1.)I like to confirm that you can not use the back and forward track buttons on other apps than the stock app provided.
2.) Under the car settings jax menu, entering the password 1234 grants you access to additional features. My gain controls in these menu do nothing. Bluetooth source isn't any louder, aux etc when adjusted.
3.)Was not able to change the default music app with a skin version or anything. (tried to remove via root, the installed a musicskin.apk in the system folder.
4.) Steering wheel controls is buggy, had to fiddle with it on different days until all the buttons are map, then no problem
5.)Viper4Android does not work with the stock apps (radio,bt, music, video). Works on some apps when i first installed it, reinstall doesn't work on some. Buggy
1.) Was able to root with KingRoot.
Click to expand...
Click to collapse
Hi bro,
I have solution for Audio output issue...
Today I found the solution, so no need to root anything.
While Mapping the steering controls., don't map -Vol.
Now my Audio output is same as my Original Car stereo.
Reason : I will post a video for this issue, because I cannot explain here...
---------- Post added at 01:59 PM ---------- Previous post was at 01:56 PM ----------
kylemd said:
Music player: Yes, although you can't use steering wheel controls to skip tracks. I'm using Poweramp.
Home screen: yes, just install another launcher and it will ask you if you want to change launchers the first time you press home. Select the one you downloaded and click "always". Personally I'm using Car Launcher Pro and it works fantastic (and has on screen music controls) although it's a paid app. See the picture of my setup for a preview.
Click to expand...
Click to collapse
Hi,
This Launcher looks cool, I will try it today. If you know more launchers then let me know.
Also if you know any app which shows both Audio & Video playlist in same app.

nguyentoogood said:
2.) Under the car settings jax menu, entering the password 1234 grants you access to additional features. My gain controls in these menu do nothing. Bluetooth source isn't any louder, aux etc when adjusted.
3.)Was not able to change the default music app with a skin version or anything. (tried to remove via root, the installed a musicskin.apk in the system folder.
Click to expand...
Click to collapse
Forgot about those ones, thanks. Added them to the first post.
nguyentoogood said:
Click to expand...
Click to collapse
Your build seems a lot newer than the ones I have. Would you be able to back them up using Partitions Backup and send them to me? Google Drive links are probably the best.
EDIT - Don't worry about /user and /userdata partitions as this is your own data and not part of the ROM. Sorry, should have mentioned this before :cyclops:

rizu3544 said:
Hi bro,
I have solution for Audio output issue...
Today I found the solution, so no need to root anything.
While Mapping the steering controls., don't map -Vol.
Now my Audio output is same as my Original Car stereo.
Reason : I will post a video for this issue, because I cannot explain here...
---------- Post added at 01:59 PM ---------- Previous post was at 01:56 PM ----------
Hi,
This Launcher looks cool, I will try it today. If you know more launchers then let me know.
Also if you know any app which shows both Audio & Video playlist in same app.
Click to expand...
Click to collapse
kylemd said:
Music player: Yes, although you can't use steering wheel controls to skip tracks. I'm using Poweramp.
Home screen: yes, just install another launcher and it will ask you if you want to change launchers the first time you press home. Select the one you downloaded and click "always". Personally I'm using Car Launcher Pro and it works fantastic (and has on screen music controls) although it's a paid app. See the picture of my setup for a preview.
Click to expand...
Click to collapse
Do you have similar Home screen as mine ?
In you Car Launcher Pro (home screen), there is Speedometer.. Does it shows correct readings ?

rizu3544 said:
Do you have similar Home screen as mine ?
In you Car Launcher Pro (home screen), there is Speedometer.. Does it shows correct readings ?
Click to expand...
Click to collapse
I did, until I installed Car Launcher Pro. Speed is through GPS so it's pretty spot on.

kylemd said:
I did, until I installed Car Launcher Pro. Speed is through GPS so it's pretty spot on.
Click to expand...
Click to collapse
Thanks, thats pretty cool..!! :good:

Just a small update...
I've managed to extract my stock ROM from my unit using the Partition Backup tool by Wanam listed in the OP. I plan on uploading the dump, as well as the two other firmwares collected to date, to AndroidFileHost as soon as I get developer status approved there.
Also I have added some tools to extract the firmware to post #2. The Rockchip drivers are fairly useless at the moment as we don't know how to connect to ADB, Fastboot or U-Boot (the bootloader), but the RK3xxx tools are what I'm using to work these ROMs. Again, as you need to be a member at 4PDA to download these (which is a pain to obtain) I will upload them to AndroidFileHost at the same time.
At some point this weekend I'll be doing a 3-way diff on the firmware we have so far to assess whether they are homogenous, i.e. can be flashed to any unit. I have a feeling they are, other than the apks in /system/app.
If it is indeed the case I'll release a modded ROM with SuperSU and (hopefully) Xposed and Viper4Android preinstalled to kick us off with custom ROMs. My endgame here is to have a source built kernel and have the device booting CM13, but as I know 9/10 of sweet f*** all about programming in Java or building from source I'm hoping somebody with dev knowledge will be able to assist.
If not, I'd be willing to kick off a bounty to get a unit for a dev who knows what they are doing so we can get some up-to-date firmware on here.
Also I've noticed that @AbduL_PT may be able to port TWRP to the device; he has already ported it to a number of other RK3188 devices so he may be able to do this one. @AbduL_PT if you're still around give us a yell
Let me know what you guys think.

For those of you that are considering purchasing one of these units, they are now AU$363 (15%) off on Aliexpress from this particular seller for 11/11 day. If you're in Australia you can also use CashRewards for another 11.11% off.
Just bought another one for my partners' Mazda 6. Yes, our family has two Mazda 6s :laugh: mine is the Mazdaspeed6/Mazda 6 MPS though.

kylemd said:
Just a small update...
Click to expand...
Click to collapse
Kyle you are the man! Keep up the good work! :good::good::good::good::good:
I gotta read into backup the rom but then i can do it no problem.
I would like to note that i bought my unit a few weeks ago.
Also, i can listen to music while the gps app is open. Sygic, and iGo maps is what i used.

For those of you playing at home, I didn't realise that Xposed pre-Lollipop didn't require a flashable zip to install, as I only got into it with Marshmallow. Xposed installs fine on the unit with the installer from rovo's page.
I did play around with GravityBox [KK] shortly today, doesn't look like I can make the soft keys appear as I'd like though :crying: (as mine is installed in a RHD car the buttons are on the wrong side). Quite a lot of things actually do work though so it is running OK.
nguyentoogood said:
Kyle you are the man! Keep up the good work! :good::good::good::good::good:
I gotta read into backup the rom but then i can do it no problem.
I would like to note that i bought my unit a few weeks ago.
Also, i can listen to music while the gps app is open. Sygic, and iGo maps is what i used.
Click to expand...
Click to collapse
Thanks mate
I also bought my unit not that long ago - 23/10/2016 actually. Given my car is a little bit older maybe mine is old stock as they're not moving them as quick.

Updated third OP post with information on system.img.
The findings on this mean I can cook a custom ROM and anybody can flash it, provided they back up their /system/app folder before installing and restore it afterwards.

Hi,
Small update..!!
I tried to access seller's files.
But I'm not sure the file which are uploaded in the month November belongs to JAX SLX7786 or not.
Please check from your side.
LINK : http://pan.baidu.com/share/home?uk=575249288#category/type=0
Now I'm downloading "4.4 885 B版 20161110.rar" firmware from the above highlighted link, I will update you guys about this firmware after installation.
UPDATE : The above firmware "4.4 885 B版 20161110.rar" has same GUI as I posted the below image, but this firmware is just a crap for my Honda Accord. Because I can see only Home Screen, nothing is responsive, it looks like Hang. I have tried to restart the Unit, but still nothing is working
This Firmware has different launcher, it includes Music player within the Home Screen. Also the music player is different.
Link : http://pan.baidu.com/s/1eRLbboQ ← This firmware works perfectly.
Please look closely at the Home Screen

rizu3544 said:
Hi,
Small update..!!
I tried to access seller's files.
But I'm not sure the file which are uploaded in the month November belongs to JAX SLX7786 or not.
Please check from your side.
LINK : http://pan.baidu.com/share/home?uk=575249288#category/type=0
Now I'm downloading "4.4 885 B版 20161110.rar" firmware from the above highlighted link, I will update you guys about this firmware after installation.
This Firmware has different launcher, it includes Music player within the Home Screen. Also the music player is different.
Link : http://pan.baidu.com/s/1eRLbboQ
Please look closely at the Home Screen
Click to expand...
Click to collapse
You are a legend thanks!
I can see at least three packages there that are for the SLX7786 - 安卓4.4老马六专用软件.rar (which is for the Mazda "Horse" 6, my car), and all the ones for the Accords, which are for yours. The others I'm not sure of, I'll have to crack them open and have a look.
In case anybody else is planning on downloading these, you can download from Baidu without having an account by using this Tampermonkey/Greasemonkey script. I haven't been able to get our device added to AndroidFileHost yet, so I'll be uploading the files as soon as I do.
EDIT - After some poking around I think I've stumbled across a repository for these units. Most of the units are designatured 7706, not 7786. Even more interestingly, there seems to be some files marked with a "STM8" designation, as well as a project file. Looking it up, the STM8 is a microcontroller that can be programmed for MCU use. We might have MCU source here, but I'm not sure. Somebody better versed in microcontrollers would be able to tell.
I also found a file with an update for the ix35 which might help the Russians I linked in the previous thread.

kylemd said:
You are a legend thanks!
I can see at least three packages there that are for the SLX7786 - 安卓4.4老马六专用软件.rar (which is for the Mazda "Horse" 6, my car), and all the ones for the Accords, which are for yours. The others I'm not sure of, I'll have to crack them open and have a look.
Click to expand...
Click to collapse
Hi Kylemd,
Any update for the firmware which you have downloaded ?
Does it works with you ?

E-ink GPS topographic’s map

Have you ever dreamed about be able to carry with you a device that will not leave you in the middle of nowhere by running out of battery, depriving you of usefull data at the worst moment, when you needed it ?!
Few years ago i was very convinced of the powerful ability of the E-ink screen’s technologies to save the précious energy of lithium’s batterys. But i was disapointed how theses screens where used for.. Most of the time, they were only used for e-book reader.. and that’s all.
That’s why i’m here today, to share with you my work and research about the modding and hacking of the Nook Simple Touch of Barnes & Nobles.
Actually it's more like a mash up of all the existing work made by the community of XDA and paraglider.
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All is available here : https://ludovic.cool/?p=37
Some help would be cool to improve the GPS interaction with the system, i found this project but don't know how to do that : https://github.com/kconger/android-serial-gps-driver

Reserved.

Fascinating! This is not something I would ever do but I read the whole thing with interest. A great guide. Thanks for sharing yet another surprising adaptation of my favorite device

nmyshkin said:
Fascinating! This is not something I would ever do but I read the whole thing with interest. A great guide. Thanks for sharing yet another surprising adaptation of my favorite device
Click to expand...
Click to collapse
Thank's you
One of my last "issue" is to improve the GPS software solution (actually UsbGps4Droid) by a native serial driver like this :
* https://github.com/kostya740/gps-glonass-android-driver
* https://github.com/kconger/android-serial-gps-driver
Help would be appreciate.

@nmyshkin i'm really impress by your work on the NST !
I just follow the process to setup the modded settings.apk and the NTGAppsAttack.
I'm looking to "enable GPS" function in Android. i'm a little bit stuck here.
In Settings.apk > Security > Location is well activated.
But apps with GPS func still claim gps is not enable in settings.
Also Gmaps is not starting, is just showing the root acces allowed pop-in but i think it's another problem.
I'm pretty sure my installation of https://github.com/dipcore/gps-glonass-android-driver is ok so .. i'm a little bit lost.

liptonthe said:
@nmyshkin i'm really impress by your work on the NST !
I just follow the process to setup the modded settings.apk and the NTGAppsAttack.
I'm looking to "enable GPS" function in Android. i'm a little bit stuck here.
In Settings.apk > Security > Location is well activated.
But apps with GPS func still claim gps is not enable in settings.
Also Gmaps is not starting, is just showing the root acces allowed pop-in but i think it's another problem.
I'm pretty sure my installation of https://github.com/dipcore/gps-glonass-android-driver is ok so .. i'm a little bit lost.
Click to expand...
Click to collapse
Unfortunately I need to get back to that updating GApps post. It seems at this time that just about everything has died but I did think network location was still working the last time I checked. I looked at my NST running 1.2.1 and GMaps there shows a location "circle" near my house and gives an accuracy rating, so I think it is still functioning.
What you describe about the root access popup sounds like the toggle app I wrote for turning GMaps on and off since it runs in the background a lot otherwise. But you still need the actual Maps app installed for that app to work. Did you by any chance forget to install the actual Maps app?
The Settings app pushes a "1" value into settings.db for network location via gps & wifi, whether they exist or not if it sees the Network Location app. Other apps should see this, but it's hard to know what is happening inside since much of the Android 2.1 OS in the NST has been removed by B&N and the GApps installation is now so shaky. I wish I had better information for you but your detailed knowledge exceeds mine, I'm sure. I'm waiting for my 1.2.2 NST to charge up so I can check Network Location there and see if it is still working.
In the meantime, if you could give me an example of an apk that attempts to use network location and will still run on the NST, I can give it a try to see what happens on my devices.

I wish I had better information for you but your detailed knowledge exceeds mine, I'm sure.
Click to expand...
Click to collapse
I would like this was the truth but i'm really quite a noob about deep android system. also i'm very news in the NST world.
Btw, when i try to install "Maps.apk" from the NewGApps.zip :
Code:
C:\Program Files (x86)\Minimal ADB and Fastboot>adb install Maps.apk
Maps.apk: 1 file pushed. 0.8 MB/s (7025142 bytes in 8.889s)
pkg: /data/local/tmp/Maps.apk
Failure [INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION]
rm failed for -f, Read-only file system
The Gmaps who not run and just show the pop-in is the "Google_Maps_1.apk"
I have attached the apps i use who require location below.

liptonthe said:
I would like this was the truth but i'm really quite a noob about deep android system. also i'm very news in the NST world.
Btw, when i try to install "Maps.apk" from the NewGApps.zip :
Code:
C:\Program Files (x86)\Minimal ADB and Fastboot>adb install Maps.apk
Maps.apk: 1 file pushed. 0.8 MB/s (7025142 bytes in 8.889s)
pkg: /data/local/tmp/Maps.apk
Failure [INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION]
rm failed for -f, Read-only file system
The Gmaps who not run and just show the pop-in is the "Google_Maps_1.apk"
I have attached the apps i use who require location below.
Click to expand...
Click to collapse
I can confirm that Network Location is still working on my 1.2.2 NST. However, Network Location is not the same thing as a GPS radio, and I think that is what the two apps you attached in your previous post are looking for (one says so explicitly). So without the fallback ability to get location data from an NLP app, they will not be able to run. That's the beauty of GMaps. It can use WiFi NLP if that's all that is available. There are no stand-alone NLP apps for Android 2.1, as far as I know. The earliest one I am aware of is for Android 4.x, and that's by Mozilla. There might be others.
As for Maps refusing to install, I am puzzled. I downloaded the zip to see if perhaps the file inside was corrupted, but I had no problems with it. It is supposed to be a system app. Perhaps if you just place it into /system/app, set the permissions as rw-r-r and reboot, it will then work.
Edit: yes, on looking at your adb install I see it rejected the procedure because the system was read-only. You would have to mount the system as r/w before installing. It might be easier just to use a root-enabled file manager and "install" as I described above.

nmyshkin said:
I can confirm that Network Location is still working on my 1.2.2 NST. However, Network Location is not the same thing as a GPS radio, and I think that is what the two apps you attached in your previous post are looking for (one says so explicitly). So without the fallback ability to get location data from an NLP app, they will not be able to run. That's the beauty of GMaps. It can use WiFi NLP if that's all that is available. There are no stand-alone NLP apps for Android 2.1, as far as I know. The earliest one I am aware of is for Android 4.x, and that's by Mozilla. There might be others.
As for Maps refusing to install, I am puzzled. I downloaded the zip to see if perhaps the file inside was corrupted, but I had no problems with it. It is supposed to be a system app. Perhaps if you just place it into /system/app, set the permissions as rw-r-r and reboot, it will then work.
Edit: yes, on looking at your adb install I see it rejected the procedure because the system was read-only. You would have to mount the system as r/w before installing. It might be easier just to use a root-enabled file manager and "install" as I described above.
Click to expand...
Click to collapse
Thank's you very much for your time, I'm actually restoring to a previous state i think i have miss something.
I'm disapointed about the Location service who doesn't include GPS radio.
The thing i doesn't underdstand is why i'm not able to ask to te system to exploit the GPS serial driver i setup.
I came from Gnu/Linux, so for me there is the hardware,kernel,driver, the software who exploit the device throught the driver.
I guess the Android provider wrap the location and drivers interaction to the apps.
I should make more research about it..

liptonthe said:
Thank's you very much for your time, I'm actually restoring to a previous state i think i have miss something.
I'm disapointed about the Location service who doesn't include GPS radio.
The thing i doesn't underdstand is why i'm not able to ask to te system to exploit the GPS serial driver i setup.
I came from Gnu/Linux, so for me there is the hardware,kernel,driver, the software who exploit the device throught the driver.
I guess the Android provider wrap the location and drivers interaction to the apps.
I should make more research about it..
Click to expand...
Click to collapse
For what it is worth, there is no entry in settings.db for GPS radio on the NST. Whether there is one in other devices, I have not checked yet. If it's just a matter of telling settings.db that the radio hardware which you added is "on" so that apps which inquire will find out, it should be easy enough to add an entry to the database. Then you would need a way to push a "1" or a "0" as is needed.
I'm guessing that to get your implementation of the GPS to work on the device you bypassed this artifact. There is probably also a page in the original NST Settings which has a place for turning on the "cell radio". In fact I know there is, but I don't remember how to get there any longer. I don't know whether that's sufficient or whether there is another entry that is specific to GPS. Either way, there might be more info the system wants before it can respond to queries from apps and tell them there is actually a real piece of hardware which is on, since the original system lacked that.

I was trying to get a GPS app to work on my Glow3.
I got the kernel and ntxconfig modified to use an unused UART.
I didn't use a mock location provider or an actual LocationProvider, I just did the NMEA in the app.
It worked fine, but the stupid pint-sized GPS receiver used one of those stupid toggling ground contacts for power on/off.
You could never get the thing to reliably turn on, so I got bored and the project subsided.

Renate NST said:
I was trying to get a GPS app to work on my Glow3.
I got the kernel and ntxconfig modified to use an unused UART.
I didn't use a mock location provider or an actual LocationProvider, I just did the NMEA in the app.
It worked fine, but the stupid pint-sized GPS receiver used one of those stupid toggling ground contacts for power on/off.
You could never get the thing to reliably turn on, so I got bored and the project subsided.
Click to expand...
Click to collapse
I believe i have already read your post, it is that ? : https://forum.xda-developers.com/nook-touch/general/gps-nook-t4021145
the toggling is GPIO pin controlled with low / high state ?
Personnaly i use this little circuit about GPIO pin :
Have GPS provider will allowing the use of already well developped map software with all the feature.
That's my only wish actually...
If i have well underdanded to permit this a backport from another device, making a new rom with the serial GPS driver included and the whole signed correctly. i'm right ?!

liptonthe said:
I believe i have already read your post
Click to expand...
Click to collapse
Yes, that's the one.
Actually, my GPS came with a board with regulator and pushbutton from SparkFun and it was still balky.
It's been discontinued since then.
I've never done the deep dive into LocationProvider to see how to make it work for real.
It seems that everybody just hacks into mock location providers, which is ugly.

Renate NST said:
Yes, that's the one.
Actually, my GPS came with a board with regulator and pushbutton from SparkFun and it was still balky.
It's been discontinued since then.
I've never done the deep dive into LocationProvider to see how to make it work for real.
It seems that everybody just hacks into mock location providers, which is ugly.
Click to expand...
Click to collapse
not really cool, i guess you can find a low cost chinese gps (BN-180) for few dollars, it will work well too.
I'm totally agree with that, mock location is pretty ugly.
To be honest i have not your experience and knowledge on the Nook, but also on android itself i guess..
So i take this occasion to ask you if you can spend a bit of time to see how it look.

This might not be very helpful but since onboard chip inside NST does not support GPS (or to my sadness neither FM radio which would be cool and I presume less power hungry when used with Renate USB sound mod then using online WiFi radio) let's turn the table and use what is already there to our advantage. Aside GPS there is something called WiFi geolocation. Why am I mentioning this? Well if that can be enabled to be used on maps of your choice and work from NST that would be awesome and sufficient for majority of users. True it will not be as helpful on mountain hiking trip there you could use it only as a ordinary map augmented with old trusty brain Mk.1 processor but its better then nothing at all. Someone wanted and managed to create screensaver for this device as transparent screen so that it shows the page where are you stopped reading. That would be good thing to be added in implementing any map solution for NST. Let's be reasonable refresh time on device is to long for it to be used as car navigation device. I have yet to try Fastmode but I would not put my money on that will change something. Even on phones GPS can be sluggish (seen that) and I believe that processing power or the way the data are feed to processor is slowing thing to a crawl. For crawling on the ground that is good enough though. If you use WiFi geolocation and that works fine then you can try to sort issues with GPS. One thing at the time is best approach in my humble opinion. There are several WiFi geolocation services and few of them are open. Still we must have in mind that using WiFi geolocation have raised some privacy issues to the point that one of the largest proponents of its use Mozilla foundation is on a path of abandoning it. Therefore who knows for how long WiFi geolocation will be available. Just my two bits thoughts on this topic.

install apps on GAC Trumpchi GS8 2022 factory OEM head unit.

Hi!
I have a GAC (Trumpchi) GS8 2022. It does not support android auto or installing any apks. there is no file explorer on board. Also, I cannot access the factory settings as require a password. all I was able to get this snapshot when the settings page briefly appeared upon cancelling the password entry prompt . Can anyone let me know how I can get into the system settings or atleast enable developer options and USB debugging. It has easyconnect and I'm currently using my mobile to run apps on the mirrored screen. But I'm guessing the head unit in android based, so I can install some apps or atleast HeadUnit Reloaded for "native" android auto via self mode. Appreciate any tips. If you know what password works to get me into factory settings, please let me know.
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Hey there, did you get a response to your query. I just received my 2023 GS8 and realised Apply Car Play is not supported - only Easy Connect.
How did you get into the config menu to see the password prompt?

michbrown said:
Hey there, did you get a response to your query. I just received my 2023 GS8 and realised Apply Car Play is not supported - only Easy Connect.
How did you get into the config menu to see the password prompt?
Click to expand...
Click to collapse
Sorry to say:
You won´t get anywhere with these units.
This may be Android as OS, but it´s closed software and you won´t be able to install anything. The implementation of Android is exactly stripped to the OEM needs.
I also would not recommend to try to hack these units, as you would get rid of the warranty and to brick the unit is not that difficult by using any other firmware.
Firmware is installed by the seller. so I would ask him why this is not possible.

rigattoni said:
Sorry to say:
You won´t get anywhere with these units.
This may be Android as OS, but it´s closed software and you won´t be able to install anything. The implementation of Android is exactly stripped to the OEM needs.
I also would not recommend to try to hack these units, as you would get rid of the warranty and to brick the unit is not that difficult by using any other firmware.
Firmware is installed by the seller. so I would ask him why this is not possible.
Click to expand...
Click to collapse
Okay. Shame and thanks for the quick response.

Is there any apk file for a Picasou android box in order to detect from the android system which doesnt come up with built in apple carplay option.

michbrown said:
Hey there, did you get a response to your query. I just received my 2023 GS8 and realised Apply Car Play is not supported - only Easy Connect.
How did you get into the config menu to see the password prompt?
Click to expand...
Click to collapse
I was driving a GS7 earlier and the wireless android auto feature was absolutely working fine thru a device called Picasou Android box when i plugged it to the usb slot. This was possible as the GS7 had inbuilt apple carplay in it.
But now i have upgraded my car to the new GS8 2023 and for a shock i couldnt find the apple car play option in it and only carbitlink/screen mirroring is supported. I was so dissapointed. After a lot of research i found out a solution where if we can install the autokit app in the car console, you can use a device like carlinkit and your wireless android auto and apple carplay will work fine like before. I am posting a insta video posted by a carlinkit dealer where he demostrates the wireless carplay and android auto options on GS8 2023 model vehicle. Hope i have been helpful to you.

Thanks for posting this. The video looks good. The key question is how to install the carlinkit apk? I’ve managed to find the config menu but do not know the PIN. Have you figured it out?
ReNish83 said:
I was driving a GS7 earlier and the wireless android auto feature was absolutely working fine thru a device called Picasou Android box when i plugged it to the usb slot. This was possible as the GS7 had inbuilt apple carplay in it.
But now i have upgraded my car to the new GS8 2023 and for a shock i couldnt find the apple car play option in it and only carbitlink/screen mirroring is supported. I was so dissapointed. After a lot of research i found out a solution where if we can install the autokit app in the car console, you can use a device like carlinkit and your wireless android auto and apple carplay will work fine like before. I am posting a insta video posted by a carlinkit dealer where he demostrates the wireless carplay and android auto options on GS8 2023 model vehicle. Hope i have been helpful to you.
Click to expand...
Click to collapse

michbrown said:
Thanks for posting this. The video looks good. The key question is how to install the carlinkit apk? I’ve managed to find the config menu but do not know the PIN. Have you figured it out?
Click to expand...
Click to collapse
Yes.You get into the search mode of the navigation and follow the below steps
1.Press and hold the , for 3 seconds and select language.
2.once the language screen comes up, select the search button on the top right hand corner of the screen.
3.This is where u can plug in a USB with a .apk file and install the app.

ReNish83 said:
Yes.You get into the search mode of the navigation and follow the below steps
1.Press and hold the , for 3 seconds and select language.
2.once the language screen comes up, select the search button on the top right hand corner of the screen.
3.This is where u can plug in a USB with a .apk file and install the app.
Click to expand...
Click to collapse
Hi ,
I followed the step but unable to connect the carlinkit. Also autokit app is not shown in the app drawer. every time I have to install the app to open it.
Did it work for you ?

njs_uition said:
Hi ,
I followed the step but unable to connect the carlinkit. Also autokit app is not shown in the app drawer. every time I have to install the app to open it.
Did it work for you ?
Click to expand...
Click to collapse
hey there,
Firstly thanks for helping me also move closer to getting this working. I followed your instructions and installed the APK - and just like you it seems I have to keep installing to open it once I exit. I purchase the Carlinkit AI Tbox and although the configuration shows it's happy, the box is not detected. I would also like to know where in the Android menu structure I can have the app on my main GAC apps and also how to launch Carlinkit! Any help is really appreciated.

Hello everyone, I have a question about the language pack for this head unit. I only see Chinese. how to make it into english?
Is there any firmware or can it be done in the menu?

michbrown said:
hey there,
Firstly thanks for helping me also move closer to getting this working. I followed your instructions and installed the APK - and just like you it seems I have to keep installing to open it once I exit. I purchase the Carlinkit AI Tbox and although the configuration shows it's happy, the box is not detected. I would also like to know where in the Android menu structure I can have the app on my main GAC apps and also how to launch Carlinkit! Any help is really appreciated.
Click to expand...
Click to collapse
Towards the end of the video, the user swipes from the left side of the screen to access a slide in dock with apps. Try that and let us know. Maybe @ReNish83 can help. He seems to have it set up.

ReNish83 said:
I was driving a GS7 earlier and the wireless android auto feature was absolutely working fine thru a device called Picasou Android box when i plugged it to the usb slot. This was possible as the GS7 had inbuilt apple carplay in it.
But now i have upgraded my car to the new GS8 2023 and for a shock i couldnt find the apple car play option in it and only carbitlink/screen mirroring is supported. I was so dissapointed. After a lot of research i found out a solution where if we can install the autokit app in the car console, you can use a device like carlinkit and your wireless android auto and apple carplay will work fine like before. I am posting a insta video posted by a carlinkit dealer where he demostrates the wireless carplay and android auto options on GS8 2023 model vehicle. Hope i have been helpful to you.
Click to expand...
Click to collapse
Hello friend I installed Nova 7 Launcher to install autokit.APK, and after I bought Carlinkit device, it works properly, I have iPhone and CarPlay wireless work some times and other not
This is my first problem, and second problem is Nova is default launcher, how can you enter to autokit if your launcher is default launcher? Not exist how add autokit button to include it in Home Screen , so if your phone connects and you push home, how can you back to CarPlay or android car? Also t launcher request me install Google play services
If you can help me please, GAC GS8 2nd gen
Regards