Database Users

Tonghai Create 2nd Generation - 4.4.2 Pure Android Head Units

Tonghai Create 2nd Generation - 4.4.2 Pure Android Head Units
To avoid confusion, below is a pictures 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 Android 4.4.2 So far there are 50 confirmed head units. You can see the full list at http://www.cardvd.by/. Below are some of the more common models.
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"lightbox_download": "Download",
"lightbox_share": "Share",
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Specifications & Features
Hardware:
OS: Android 4.4.2
Processor Type: Quadcore R16
CPU: Quad-Core Cortex A9 1.6 Frequency
GPU: DUAL Mali400MP2 400MHz - Complies with OpenGL ES 2.0/1.1
RAM: 1G DDR3 RAM
iNAND: 16GB
External Memory: Up to 32GB MicroSD Note: You can use external storage higher than 32GB as long as it is formatted as FAT32. @Hisma
MCU: 5.3.13-1-10-610101-150619
Screen: Capacitive 800x480 - 1024x600.
GPS: GLONASS/Galilean satellites - supports H.265 video decode
Radio: Analogue with RDS 6686
DVD: Yes
Bluetooth: Yes
System Versions
This units Android system is 4.4.2, however the software versions for this unit vary. Versions 4.4.4-4.5.5 have been found so far.
INFINIDI units are 800x600 and KED are 1024x600
Not 100% confirmed
Russian File Hub: https://yadi.sk/d/2pHevpUnkpf3e
Version 4.4.4
@kenfly - 4.4.4system.zip
@mxv68 - V4.4.4_20150831_KED1.rar
Version 4.5.2
@mxv68 - 4.5.2_20151010_INFIDINI.rar
Version 4.5.3
@mxv68 - V4.5.3_20151027_TW2_R16T.rar
Version 4.5.4
@mxv68 - V4.5.4_20151116_KED1.rar
Version 4.5.5
@Dr.Aar - https://yadi.sk/d/2pHevpUnkpf3e
Other Downloads
Version 2.9.1 800x480 - Most likely default software taken from AN-21U
@mxv68 - V2.9.1_20141217_800X480_SYSTEM_KED.rar
Version 4.5.3 800x480 or 1024x600 - Duplicate File? Maybe?
@mxv68 - V4.5.3_20151027_TW2_R16╦─║╦╡╫╧┬╨í═╝▒ΩUI.7z
PhoenixSuit Software
@mxv68 - 115_cz0084d9kx1a5dm5f_4.3-4.4_刷机.rar
KingRoot Download
- http://forum.xda-developers.com/android/apps-games/one-click-root-tool-android-2-x-5-0-t3107461
OEM Update Manual
- http://www.mediafire.com/view/23fr6de2xb5vbhj/4.4_upgrade_system.doc
Updated Manual
http://s7.postimg.org/ie7tk4y1n/IMG_20160328_151029_1620527078.jpg
Related Links
CarDVD - (Wholesale direct seller) - http://www.cardvd.by/
Tonghai Create Electronics Co.,LTD - http://www.szcreat.com/
Russian Thread - http://4pda.ru/forum/index.php?showtopic=707069
Known Issues/Fixes
USB Debugging is password protected.
Resolved: The password is "[email protected]". Credit to @nikko82
What is the Factory Reset / Developer Options password?
Resolved: 7890
What is the Extra Settings password?
Resolved: 123456
Note: Do NOT change the resolution of the head unit. You will destroy your unit. However it is reversible.
Where can I buy one?
Resolved: Go to Ebay/Alibaba and there are hundreds of them.
Does it have the full Play Store?
Resolved: Yes
Can I use Bluetooth OBD devices with Torque?
Resolved: Yes they are compatible on most of these devices. Parts sold separately. Generic OBD's are confirmed to work. As well as Torque.
Can I root this unit?
Resolved: Kingroot is confirmed to work on this model. Thanks to @vdsem
More information will be posted on this as soon as it is revealed.
Can you Backup?
Resolved: YES! To Backup: Thanks to @iceglue
1. Start TERMINAL EMULATOR2. Execute Superuser: su
3. Go to partition directory: cd /dev/block/by-name
4. Copy to SD Card:
dd if=boot of=/extsd0/boot.img bs=4096
dd if=bootloader of=/extsd0/bootloader.img bs=4096
dd if=env of=/extsd0/env.img bs=4096
dd if=data of=/extsd0/data.img bs=4096
dd if=misc of=/extsd0/misc.img bs=4096
dd if=recovery of=/extsd0/recovery.img bs=4096
dd if=system of=/extsd0/system.img bs=4096
dd if=private of=/extsd0/private.img bs=4096
Have any recommendations or things to add? Just mention me and I will be notified!

I also got this new version, mine is the dvd-less 7" model with 6 buttons at the bottom. One other difference that wasn't mentioned: usb keyboard and mouse are not working. Still experimenting with it.

I'm trying to get the source files from my seller lets see how this goes.

Were u able to get it to work @sciallo ?

imableeblob said:
Were u able to get it to work @sciallo ?
Click to expand...
Click to collapse
I installed it and have been on the road, haven't had time to really do much other than install some apps,
I got update files from my seller but didn't test them yet... The file naming suggests they are encrypted like the. An-21u's if I remember right the encryption got figured out at some point, I'll have to research it when I get some time
Other things I found out so far:
- USB keyboard/mousd doesn't seem to work
- sub out only works with radio, nor poweramp Pandora Bluetooth or even built in music app. I ended up connecting my subwoofer amp to the rear channel
- hard drive works, I use a 128gb solid state hd.
Some apps are not compatible according to play store but can be side loaded (eg. Tablet talk and if I remember right poweramp), some are compatible according to play store but force close (eg gmail and weatherbug)
that's all I got so far, I thought I was buying another an-21 identical to the one I already have because I knew what to do and don't have too much time lately and here I am with the latest...

sciallo said:
I got update files from my seller but didn't test them yet... The file naming suggests they are encrypted like the. An-21u's if I remember right the encryption got figured out at some point, I'll have to research it when I get some time.
Click to expand...
Click to collapse
I also got this unit but my seller was not able to share the update files with me. Would it be possible to get them from you? I would like to investigate the differences to the dual core firmware version. Many thanks in advance.

hellSunshine said:
I also got this unit but my seller was not able to share the update files with me. Would it be possible to get them from you? I would like to investigate the differences to the dual core firmware version. Many thanks in advance.
Click to expand...
Click to collapse
https://drive.google.com/file/d/0B4RRcgRzZP0ARHpNU1ZVQ0xJSVk/view?usp=sharing
Keep in mind I haven't tried it, if anyone tries it, please post the version numbers as seen in the settings.

sciallo said:
Keep in mind I haven't tried it, if anyone tries it, please post the version numbers as seen in the settings.
Click to expand...
Click to collapse
Many thanks! Unfortunately the archive contains dual core firmware. Android 4.1.1. System 2.9.5_20150413.
Could you pls contact your seller again? Would be great!

hellSunshine said:
Many thanks! Unfortunately the archive contains dual core firmware. Android 4.1.1. System 2.9.5_20150413.
Could you pls contact your seller again? Would be great!
Click to expand...
Click to collapse
That was quick! Do you know that for sure?

sciallo said:
That was quick! Do you know that for sure?
Click to expand...
Click to collapse
Somebody (you?) posted the same file "4.4syestem.zip" in the AN-21U dual core thread a couple of days ago, and I got it already investigated by a real expert for this. It turned out (in the emulator) that it's the dual core firmware. You could double check - maybe something went wrong.

hellSunshine said:
Somebody (you?) posted the same file "4.4syestem.zip" in the AN-21U dual core thread a couple of days ago, and I got it already investigated by a real expert for this. It turned out (in the emulator) that it's the dual core firmware. You could double check - maybe something went wrong.
Click to expand...
Click to collapse
That was me, contacting seller now...

sciallo said:
That was me, contacting seller now...
Click to expand...
Click to collapse
Did you check whether the system update files were somewhere on the unit? I couldn't find them on mine...
One more comment: My seller always told me that the firmware in the quad core would be the same as in the dual core. When comparing Sciallo's quad core files to my dual core files then there is only 1 significant difference: libandroid_runtime.so (of course the stock app apks are also different but this is not important here).
I'm no Android expert but I could imagine that only some native libraries would have to be modified for the new quad core hardware.
Would i.e. a new libandroid_runtime.so be sufficient?

I will try to contact my seller. I wonder if there could be differences between units. Since they all have the same hardware I doubt it but multiple sources might be helpful.

Got Root rights program: KingRoot , it is permanent.

nice, this is the unit I was looking at on ali express. What I don't understand is looking at the R16 on google, it looks to be a quad core A7, not quad core A9. Can someone link me to the specs of the R16?
The seller is smart rover, here is the item I am looking at:
http://www.aliexpress.com/item/8-An...For-Mazda-6-Atenza-2013-2014/32369470348.html
I am curious how it performs against the RK3188-based HUs.
---------- Post added at 09:37 AM ---------- Previous post was at 09:27 AM ----------
how is BT audio quality? How is mic quality?

Have been playing more. I haven't come across any incompatible apps. However I have noticed Easy Connect doesn't work most of the time and Bluetooth connect is glitchy.

Hisma said:
nice, this is the unit I was looking at on ali express. What I don't understand is looking at the R16 on google, it looks to be a quad core A7, not quad core A9. Can someone link me to the specs of the R16?
The seller is smart rover, here is the item I am looking at:
http://www.aliexpress.com/item/8-An...For-Mazda-6-Atenza-2013-2014/32369470348.html
I am curious how it performs against the RK3188-based HUs.
---------- Post added at 09:37 AM ---------- Previous post was at 09:27 AM ----------
how is BT audio quality? How is mic quality?
Click to expand...
Click to collapse
Wrong unit. I have seen that unit before, but its not any of these, however it is another Hybrid unit of the AN-21U

Quadcore Unit (Tontek)
Here's some more info/video from me regarding the quad core unit. I also own a dual core unit from the same manufacturer (Tontek), and I have to confess that the quad core is just superior in any way. My main expectation was that the unit performs faster and that apps like Poweramp and Sygic are running reasonably now - this I just can confirm now. Basically, Tontek seems just to have adjusted the firmware to make it run with the new hardware but all apps look / behave the same as on the dual core. Unfortunately, the seller did not provide the system update files to have a closer look into the firmware (i.e. to check if Red Mod could be adjusted to run on the quad core).
Startup: https://youtu.be/mlt9hTUh91A
System Settings: https://youtu.be/36NLGNcm95c
iGo: https://youtu.be/86cnEwmXM6s
Radio, Music, Video: https://youtu.be/3coJ-5jY6ys
Background: https://youtu.be/V4tGLsA5DAc

hellSunshine said:
Here's some more info/video from me regarding the quad core unit. I also own a dual core unit from the same manufacturer (Tontek), and I have to confess that the quad core is just superior in any way. My main expectation was that the unit performs faster and that apps like Poweramp and Sygic are running reasonably now - this I just can confirm now. Basically, Tontek seems just to have adjusted the firmware to make it run with the new hardware but all apps look / behave the same as on the dual core. Unfortunately, the seller did not provide the system update files to have a closer look into the firmware (i.e. to check if Red Mod could be adjusted to run on the quad core).
Startup: https://youtu.be/mlt9hTUh91A
System Settings: https://youtu.be/36NLGNcm95c
iGo: https://youtu.be/86cnEwmXM6s
Radio, Music, Video: https://youtu.be/3coJ-5jY6ys
Background: https://youtu.be/V4tGLsA5DAc
Click to expand...
Click to collapse
I have noticed that these units vary in the AN-21U updates,
For example: http://forum.xda-developers.com/wiki/Tonghai_Create_AN-21_U#Versions
My Unit runs the update "System Version 2.6.40". Now of course these numbers will not match up with the quad core unit's numbers since all these updates have been modified, however they all vary in which update they carry. Now what does this mean? I don't know. Yet...

I can confirm that kingroot works, @imableeblob you might want to update the first post
---------- Post added at 12:33 PM ---------- Previous post was at 12:29 PM ----------
I've been getting the usual Chinese stalling techniques from my seller. Still on it and they're still promising to provide the update files.... we'll see.

Please help identify this Headunit (Android 6.0.1, Allview Quad T3 1.2GHz, 2GB Ram)

Attached some pictures of headunit, button and menu layout, as well as CPUX data. I suspect it's some kind of Joying but can't find it anywhere...
It's a 9" unit, 1024x600 resolution and a pretty locked down system menu
Thx for hints!

i think i found it, it's one of the models that "youmecity" store sells on aliexpress...

Hi, yes this is youmecity.
I just got this (or very similar) head unit and it's fantastic!
Do anybody know how to ROOT it without flashing?
Thanks in advance

heps said:
Hi, yes this is youmecity.
I just got this (or very similar) head unit and it's fantastic!
Do anybody know how to ROOT it without flashing?
Thanks in advance
Click to expand...
Click to collapse
don't know, sorry.
try kingoroot or kingroot....

@up: I tried, didn't work

Hi, I got apparently the same unit: Silverstrong quad core allwinner t3 w. android 6.01
There is not a lot available yet.
I rooted it with Kingroot.
App's are pretty lame, but hardware seems to be OK.
https://forum.xda-developers.com/an.../silverstrong-quad-core-allwinner-t3-t3575024

i got new FW (25.03 - along with MCU and config update) from chinese support and it fixes the following:
- radio app now displays RDS text instead of MHz frequency, also FM presets saved as text but fewer chars than actual station name...so some may end up truncated
- voice-over-navi now works. Front speakers stop music to play navi announcements and then revert to music, while back speakers keep playing music. Not as elegant as proper volume fade-out/in, but does the job
- more settings & options
- slightly better wifi reception (can be subjective, couple of dB according to wifi analyzer)
what ended up worse than previous FW:
- PPI or DPI changed, can't figure out exactly how/what, but text in apps (non native ones!, like waze, poweramp, weather, etc..) is now smaller than before.
- top notification bar is now present all the time, so apps don't run "fullscreen" anymore. Maybe this is why text is smaller, since it's smaller area vertically...
- overall screen real estate seems to be offset downwards a bit (couple of milimeters), options (icons with text, like in poweramp) have text cut in half, kind of hidden below bezel.
Things on my feedback list that i gave them for next FW update:
- introduce "folder" view in the default music app, not just "artists, songs, playlists, etc.."
- fix "Handbreak" info in the carinfo app It is now completely the other way around: when handbrAKE is not engaged, it shows red icon ON...when it's engaged (pulled) it shows white icon OFF...wtf
- revert text size to old FW (probably make apps fullscreen can fix that?)
- fix screen offset
Overall very satisfied with the unit, the support guys (or gals?) do respond relatively in good time and impressed with rolling out new Firmware with fixes that i feedback to them in the first place!!

You can give a link to FW

zerozoneice said:
Attached some pictures of headunit, button and menu layout, as well as CPUX data. I suspect it's some kind of Joying but can't find it anywhere...
It's a 9" unit, 1024x600 resolution and a pretty locked down system menu
Thx for hints!
Click to expand...
Click to collapse
hello, can you upload car info.apk?

My unit does not turn off with car - it stays always on! I checked after 2 hours after activating car alarm and it always stays ON! I'm worried about my car battery...
Everyone, is your unit turning off with the ignition? My previous unit did but this one not.... Does anybody know the solution?

heps said:
My unit does not turn off with car - it stays always on! I checked after 2 hours after activating car alarm and it always stays ON! I'm worried about my car battery...
Everyone, is your unit turning off with the ignition? My previous unit did but this one not.... Does anybody know the solution?
Click to expand...
Click to collapse
make sure the ACC cable is not connected.

zerozoneice said:
make sure the ACC cable is not connected.
Click to expand...
Click to collapse
Thanks, it worked!

On my unit, ACC and B+ were switched on the iso plug. It means some settings were not stored when switching off the unit (beep on keys, radio presets). After putting B+ and ACC wire on the right iso positions, everything worked perfect.

Dear @zerozoneice
Could you please share the Car Info.apk file from your android Head Unit.
Process to Extract App from Head Unit :
You can use APK Extractor, download from Playstore. Once you open the APK Extractor App then select CAR INFO App from the list and then click extract.
Or download the attached APK Extractor and share your CAR INFO app.

rizu3544 said:
Dear @zerozoneice
Could you please share the Car Info.apk file from your android Head Unit.
Process to Extract App from Head Unit :
You can use APK Extractor, download from Playstore. Once you open the APK Extractor App then select CAR INFO App from the list and then click extract.
Click to expand...
Click to collapse
i updated it already to a newer FW but i have an unpacked FW lying around, i can see the APKs there.
There's "canbuscarinfo.apk" and a "carbuscaninfo.odex" in a /oat/arm folder. here's both

zerozoneice said:
i updated it already to a newer FW but i have an unpacked FW lying around, i can see the APKs there.
There's "canbuscarinfo.apk" and a "carbuscaninfo.odex" in a /oat/arm folder. which one do you want?
Click to expand...
Click to collapse
Better share both...
Thanks for the reply...
Does this app need OBDII ??

rizu3544 said:
Better share both...
Thanks for the reply...
Does this app need OBDII ??
Click to expand...
Click to collapse
no idea. you mean the BT dongle?

zerozoneice said:
no idea. you mean the BT dongle?
Click to expand...
Click to collapse
I mean about the below picture...

Hi, do you know how to update Android on this thing?
I received new firmware from the supplier - two files: "mcu_auto..4" + "os_update_auto..0"
There is an instruction that these files should be copied do USB stick to the main folder without changing the names.
After attaching USB stick, Android should detect update files presence and show confirmation for the user.
But nothing happens when I connect this drive. I can browse files and I see update files. But update does not trigger.
I don't know what to do else... I tried reformatting the drive to FAT filesystem, tried changing filenames (I saw that somebody changed files to OS_UPDATE.zip and MCU.zip) - nothing...
Any help appreciated!

brightness etc.
heps said:
Hi, yes this is youmecity.
I just got this (or very similar) head unit and it's fantastic!
Do anybody know how to ROOT it without flashing?
Thanks in advance
Click to expand...
Click to collapse
How is the screen brightness under daylight? Had a similar system before (Joying) and was fine, except for the screen brightness, which could have been better.
Also, does it boot pretty quick? Joying was almost instant on

[Development] Reverse camera app with 360 view

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I've noticed that these things are becoming popular and I thought why not make one for my Android head unit?
(I have Intel Sofila 3GR variant)
After doing some research in Computer Vision and hacking UIServer app, I'm happy to announce that it works
You can see a live demo in my youtube channel - https://youtu.be/bRYOB4MqHmo
The solution is software only:
1. it uses a computer vision algorithm that I've created that changes the perspective of the rear camera to top view.
2. A simple, analog, 480TVL video camera is enough for this algorithm! which means no hardware mods are needed!
3. An initial calibration process per camera per car is needed (usually takes 5-10 minutes)
4. In addition to the top, 360 view, it also undistorts fisheye lens!
It translates rear camera view:
into top camera view, with a memory of previously seen space:
Hope to release the app when it will be steady enough.
Until then, I've ordered a PX5 CPU based Android for better performance.

Looks promising!

Not bad. Keep going and updating.

thanks!
I've did some retouches, now it looks even better - https://www.youtube.com/watch?v=dzpn0ROKkX8

What's the CPU load like when that's running ? I presume you have added the usual heatsinks & fan to your Joying ?

All original hardware, no extra heatsinks (its 20-5 Celsius out here right now).
It runs 2 threads at full speed so it takes like 50% cpu load (100% for each thread that runs on an individual core).

Holy f**k this looks amazing. I would love to try it out (got a joying PX5 unit).

This is awesome ! Any release soon ? even if it's beta

You will have the self driving car manufacturers paying you billions for this soon ?

can't wait to try this!

any updates on this?

I have "Joying SC9853i",
would be nice to try this app !!
hope you will release it for Joying SC9853i !!

Hi, sorry for not updating for a while, it's not easy to find free nights for that project.
I've stabilized the code a bit but it still isn't good enough for releasing it - it jerks when reversing too fast and my analog backup camera has a very poor and noisy quality which doesn't help either.
Another issue I'm facing is that in order to listen to reverse gear interrupt I have to do dedicated reverse engineering for each model which isn't trivial.
What I do have and will update soon is more videos, I've added a feature for recording the top view perspective. It does work perfectly in many scenarios and even OFF ROAD! which is very cool!

ValkA said:
Hi, sorry for not updating for a while, it's not easy to find free nights for that project.
I've stabilized the code a bit but it still isn't good enough for releasing it - it jerks when reversing too fast and my analog backup camera has a very poor and noisy quality which doesn't help either.
Another issue I'm facing is that in order to listen to reverse gear interrupt I have to do dedicated reverse engineering for each model which isn't trivial.
What I do have and will update soon is more videos, I've added a feature for recording these cool top view perspective. It does work perfectly in many scenarios and even OFF ROAD! which is very cool!
Click to expand...
Click to collapse
Is your joying active cooled? may help with the jerking.
Why listen for the reverse and not just use it as an app first, and listen for that intent later?
Can't wait to see those video's! subscribed to your youtube

pafo42 said:
Is your joying active cooled? may help with the jerking.
Why listen for the reverse and not just use it as an app first, and listen for that intent later?
Can't wait to see those video's! subscribed to your youtube
Click to expand...
Click to collapse
Thanks
1. I want it to be automatically - as soon as I hit reverse gear I want to see that top view (and that's what we have now ).
2. not only this interrupt needs special treatment per different MCU model, but also getting the video feed is not always trivial. Those Chinese manufacturers aren't using Android HALs as they should be using. That means - I can't just open an android Camera view and see the reverse camera (in Joying luckily it is like that, but in others like ALLWINNER its sucks, need to hack into some process and send it a proprietary IPC message)
3. I haven't modded it for cooling but it has some fan in there. I'm in a hot country (32 celsius easy) so it might worth a try because sometimes FPS is high and sometimes very low without any good reason.

ValkA said:
Thanks
1. I want it to be automatically - as soon as I hit reverse gear I want to see that top view (and that's what we have now ).
2. not only this interrupt needs special treatment per different MCU model, but also getting the video feed is not always trivial. Those Chinese manufacturers aren't using Android HALs as they should be using. That means - I can't just open an android Camera view and see the reverse camera (in Joying luckily it is like that, but in others like ALLWINNER its sucks, need to hack into some process and send it a proprietary IPC message)
3. I haven't modded it for cooling but it has some fan in there. I'm in a hot country (32 celsius easy) so it might worth a try because sometimes FPS is high and sometimes very low without any good reason.
Click to expand...
Click to collapse
2: I'm running this rom but can't see the reverse camera on my device unless I supply power to the "back" wire.. So I'm curious if it would work with mine.
3. I've got a joying single DIN and it just overheats on the regular (Dutch weather, so not that hot) and it thermal throttles a lot or just shuts off/boot loops because of it, and I've ordered a cooling kit online.. so it's likely

pafo42 said:
2: I'm running this rom but can't see the reverse camera on my device unless I supply power to the "back" wire.. So I'm curious if it would work with mine.
3. I've got a joying single DIN and it just overheats on the regular (Dutch weather, so not that hot) and it thermal throttles a lot or just shuts off/boot loops because of it, and I've ordered a cooling kit online.. so it's likely
Click to expand...
Click to collapse
2. same on mine.

Truly a beautiful project !!
I hope you will soon be able to have a working version that you can share.
Thank's for your job!!

will this work on a PX5 dasaita unit?

dominicanodcora said:
will this work on a PX5 dasaita unit?
Click to expand...
Click to collapse
Right now I'm ordering a PX5. I believe it will have superior performance

Change home screen of Chinese Android head unit 8227L

Hi team, I'm new here and I already read some topics but it's not clear for me.
Is it possible change the home screen for Chinese Android head unit 8227L? It's with Android 9.1. My HU is very poor and it's impossible change the layout...only wallpaper.
Someone help me?

Yes, install any of the car launchers from playstore - Carwebguru, agama, etc

lucianafbatista said:
Hi team, I'm new here and I already read some topics but it's not clear for me.
Is it possible change the home screen for Chinese Android head unit 8227L? It's with Android 9.1. My HU is very poor and it's impossible change the layout...only wallpaper.
Someone help me?
Click to expand...
Click to collapse
get a launcher from the playstore.
i like FCC and CarWebGuru (i'm using the latter) just download and install and select "always use as homescreen".
you might not be able to find the radio, bluetooth, tpms and other stock apps in the drawer anymore.
if that is the case you need to install the correct apk's to get them visible in your app drawer again.
here are the apk's: http://www.mediafire.com/file/14sodhuv8mvl7g6/stock_apps_for_AHU_%288227L%29.zip/file
download, unzip and copy the needed apk's to your usb stick or sd card.
insert the card/stick in your Head unit browse to the files, click install apk.. and BAM! full working stock apps!

dutchcommando said:
you might not be able to find the radio, bluetooth, tpms and other stock apps in the drawer anymore.
if that is the case you need to install the correct apk's to get them visible in your app drawer again.
here are the apk's: http://www.mediafire.com/file/14sodhuv8mvl7g6/stock_apps_for_AHU_%288227L%29.zip/file
download, unzip and copy the needed apk's to your usb stick or sd card.
insert the card/stick in your Head unit browse to the files, click install apk.. and BAM! full working stock apps!
Click to expand...
Click to collapse
Thanks. That is very helpful.
The stock apps on my device are quiet bad. The BT app for example does not sync properly, does not support favorites and has very poor functionality and UI.
How can I change a stock app to a better one ?

oferyuval said:
Thanks. That is very helpful.
The stock apps on my device are quiet bad. The BT app for example does not sync properly, does not support favorites and has very poor functionality and UI.
How can I change a stock app to a better one ?
Click to expand...
Click to collapse
Welcome to the forum. So as you have probably started to notice, the unit you've bought is not up to expectations but fear not, there are plenty of optimizations that can be done to improve the user experience. Feel free to visit this thread for inspiration and of course software that can help you on this journey. And check out the video in my signature that will demonstrate a lot of these improvements.

iceblue1980 said:
Welcome to the forum. So as you have probably started to notice, the unit you've bought is not up to expectations but fear not, there are plenty of optimizations that can be done to improve the user experience. Feel free to visit this thread for inspiration and of course software that can help you on this journey. And check out the video in my signature that will demonstrate a lot of these improvements.
Click to expand...
Click to collapse
Thank you! It looks very promising.

Hi everyone. I have 8227l demo android headunit in my car running on android Go 8.1. It has 2GB RAM, 32GB ROM (have verified that it really has these specs). All apps run fine but Google Maps app works very slow, lags too much. Kindly anyone guide me how to fine tune the headunit for a better & smooth speed of Google Maps working. Thanks

AlphaBravo said:
Hi everyone. I have 8227l demo android headunit in my car running on android Go 8.1. It has 2GB RAM, 32GB ROM (have verified that it really has these specs). All apps run fine but Google Maps app works very slow, lags too much. Kindly anyone guide me how to fine tune the headunit for a better & smooth speed of Google Maps working. Thanks
Click to expand...
Click to collapse
This is a common problem with these units in general. What you need is a modified firmware then root. You can speed up your head unit considerably this way.
Check out the video in my signature and at 1:54 you can see the speed of Google Maps but on a 1Gb RAM unit.

Where
iceblue1980 said:
This is a common problem with these units in general. What you need is a modified firmware then root. You can speed up your head unit considerably this way.
Check out the video in my signature and at 1:54 you can see the speed of Google Maps but on a 1Gb RAM unit.
Click to expand...
Click to collapse
Thanks for replying. Where can I find that video dude?

AlphaBravo said:
Where
Thanks for replying. Where can I find that video dude?
Click to expand...
Click to collapse

Please recommend me according to my Headunit's specs, How to root it dear?
@iceblue1980
{
"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"
}

AlphaBravo said:
Please recommend me according to my Headunit's specs, How to root it dear?
@iceblue1980
View attachment 5376951View attachment 5376953
Click to expand...
Click to collapse
Sorry I don't have anything that will work on this unit

iceblue1980 said:
Sorry I don't have anything that will work on this unit
Click to expand...
Click to collapse
Why? Is it a rare unit?

AlphaBravo said:
Why? Is it a rare unit?
Click to expand...
Click to collapse
It's just not the right kind of unit. The units that are most common are 8227L type with YT921xx system type

iceblue1980 said:
It's just not the right kind of unit. The units that are most common are 8227L type with YT921xx system type
Click to expand...
Click to collapse
It's the same.. 8227L YT9217C
Watch carefully

AlphaBravo said:
It's the same.. 8227L YT9217C
Watch carefully
Click to expand...
Click to collapse
Apologies, I thought I was replying to another post with similar question. I don't have anything for 2Gb RAM units, is what I was meaning to say. But there are plenty of stuff for your device out there.

iceblue1980 said:
Apologies, I thought I was replying to another post with similar question. I don't have anything for 2Gb RAM units, is what I was meaning to say. But there are plenty of stuff for your device out there.
Click to expand...
Click to collapse
What can I do with my device to get the best out of it? What do you recommend bro?

Hi,
I installed Joying android unit JY-UQS03N4G, and it worked okay. But now it does not recognize both the USB ports and Im unable to connect via USB.
Your advise appreciated.

Got it back. Ran 'factory reset' and both USB s working properly.

AlphaBravo said:
What can I do with my device to get the best out of it? What do you recommend bro?
Click to expand...
Click to collapse
Well, it all depends on your skill level. Here is what I'm doing to these devices as part of my charity project (you can find more info here)
HARDWARE MODS
1. Installation of TDA7729 sound processing chip (if not present) - without it Fade and EQ do not work
2. Boost the sound quality of the onboard radio and sound effects (exchanging SMD components)
3. Installation of TDA7850 amplifier powered by external 18v power supply (custom built by myself) as well as replacement of capacitors controlling the bass and the treble. Active, temperature-controlled cooling system with additional heatsinks to ensure the proper heat dissipation - this requires modding the case internally as well.
4. WIFI antenna - increasing the average download speed from 1-2 Mbit to 30-40 Mbit
5. Vastly improving the microphone quality by removing the internal mic and replacing it either with a better internal mic or an external one.
6. Proper heatsink on the CPU that feeds into the aluminium case
SOFTWARE MODS
1. Installation of custom firmware (normally publicly available on 4PDA)
2. TWRP recovery
3. Root
4. Viper4Android - massive sound improvement in combination with the TDA7850 mod described above
5. Custom UI and startup logo (boot animation)
6. Speed hacks using root to greatly improve the performance of the head unit
Much more can be done as well, things like installing SDcard reader, AHD chip, RDS radio and other cool stuff.
Hope this answers your question

AC8257 base unit - new Firmware + MCU update with Android 11 & Android Auto wireless

Hi,
After struggling hard to find how to update my unit (what doesn't seems possible with USB key in my case ; only with a MicroSD card), I finaly did it.
This new system is Android 11 based, and allow to connect to Android Auto wireless, sounds good uh?
My unit is AC8257 based, and has 8 core, 64 GB ROM, 4 GB LPDDR4 RAM @ 1024x600, but the upload also contains 800x600 & 1280x720px, there is .BAT files that make easyier to pick up the good Android_scatter file.
Here is where I come from first :
{
"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"
}
And here is where I am now :
Below, a picture of the app/system that detect that my phone is close by and ready to pair with Android Auto. I first had to connect it with wire to show him the way. It now seems automatic.
You can find this wonderfull new firmware here (dated : 20220513), along with the MCU update : https://www.dropbox.com/sh/k2dotip66u7iekg/AAA69Z_ujnTZQMai5TbPXAbma?dl=0
8257升级教学（新）.MP430/06/2022 09:40
B200 wifi 1024x600 2022.05.13 ATCUPG.zip02/06/2022 10:37
mcu_202206071001BD2-1559.upd
I hope this will help

noiwid said:
Hi,
After struggling hard to find how to update my unit (what doesn't seems possible with USB key in my case ; only with a MicroSD card), I finaly did it.
This new system is Android 11 based, and allow to connect to Android Auto wireless, sounds good uh?
My unit is AC8257 based, and has 8 core, 64 GB ROM, 4 GB LPDDR4 RAM @ 1024x600, but the upload also contains 800x600 & 1280x720px, there is .BAT files that make easyier to pick up the good Android_scatter file.
Here is where I come from first :
View attachment 5657323
And here is where I am now :
View attachment 5657325
Below, a picture of the app/system that detect that my phone is close by and ready to pair with Android Auto. I first had to connect it with wire to show him the way. It now seems automatic.
View attachment 5657327
You can find this wonderfull new firmware here (dated : 20220513), along with the MCU update : https://www.dropbox.com/sh/k2dotip66u7iekg/AAA69Z_ujnTZQMai5TbPXAbma?dl=0
8257升级教学（新）.MP430/06/2022 09:40
B200 wifi 1024x600 2022.05.13 ATCUPG.zip02/06/2022 10:37
mcu_202206071001BD2-1559.upd
I hope this will help
Click to expand...
Click to collapse
Do you know if this fixes the issue on the factory Android 10 firmware with the accessibility services being deactivated even though I've disabled the apps from battery optimisation?

Hi,
the accessibility menu is available, but how to ensure the service is running?

noiwid said:
Hi,
the accessibility menu is available, but how to ensure the service is running?
Click to expand...
Click to collapse
It's the downloaded services that show up under the accessibility menu from other apps like for AppMgr III, macrodroid, bitdefender and most reboot apps. On my unit that came with Android 10, these services get automatically disabled by some task manager or something.

The killing app system you mention might be DuraSpeed, that's supposed to free up RAM. When my unit was Android 10 based, I had a menu to disable it, not sure it's still the case, gonna check Asap.

noiwid said:
The killing app system you mention might be DuraSpeed, that's supposed to free up RAM. When my unit was Android 10 based, I had a menu to disable it, not sure it's still the case, gonna check Asap.
Click to expand...
Click to collapse
Oh is that what Duraspeed is. I thought there must be some other/extra task manager killing it off but I was only looking at other apps that might be doing it. I'll look at disabling it. Do you think the android 11 firmware is better, do you like it more than 10?

Was Google maps slow to open or to start navigation after you enter an address on your old firmware or is it faster on 11?

AML276 said:
Oh is that what Duraspeed is. I thought there must be some other/extra task manager killing it off but I was only looking at other apps that might be doing it. I'll look at disabling it. Do you think the android 11 firmware is better, do you like it more than 10?
Click to expand...
Click to collapse
I think the Os is better, for few reasons:
- a bit faster on startup, I set it up to auto launch Waze when it boot, whats seems to be done easyly.
- better UX, you can choose between 4 layouts for the launcher, and one of them offer the possibility to personnalize 4 or 5 apps shortcus from main screen, what I found really usefull in daily use.
- Android Auto that can work wirelesq, even if I now realize Android Auto is useless when you have an Android unit.. you can do more straight from the unit (if connected online) than thru limited features offered by Androïd Auto.
about Maps delay, hard to say as I mainly use Waze, i don't have enough track records with G Maps on this unit, that I only receive 1 or 2 weeks ago...
I'll add a few screenshots of the launcher, do you want to see particular screens/menu?

noiwid said:
I think the Os is better, for few reasons:
- a bit faster on startup, I set it up to auto launch Waze when it boot, whats seems to be done easyly.
- better UX, you can choose between 4 layouts for the launcher, and one of them offer the possibility to personnalize 4 or 5 apps shortcus from main screen, what I found really usefull in daily use.
- Android Auto that can work wirelesq, even if I now realize Android Auto is useless when you have an Android unit.. you can do more straight from the unit (if connected online) than thru limited features offered by Androïd Auto.
about Maps delay, hard to say as I mainly use Waze, i don't have enough track records with G Maps on this unit, that I only receive 1 or 2 weeks ago...
I'll add a few screenshots of the launcher, do you want to see particular screens/menu?
Click to expand...
Click to collapse
I think I might know of the 4 launchers. From an xyauto bundle?? Hopefully which is this one as it's the only one I've found that's even close to the type of layout I need and I was going to try and force load it in the morning on the current firmware.

I wonder who made the original firmware you had that listed the hardware as ac8257, but now you have the bosion b200 firmware I think with android 11, as my factory Android 10 firmware is the b200 already.

noiwid said:
The killing app system you mention might be DuraSpeed, that's supposed to free up RAM. When my unit was Android 10 based, I had a menu to disable it, not sure it's still the case, gonna check Asap.
Click to expand...
Click to collapse
How did you go checking if Duraspeed is still part of the android 11 firmware? Do you have any downloaded services under accessibility and do they stay enabled?
I disabled it and the downloaded services stay enabled after a reboot now but something still turns them off once the system has been running/idle for a while.

What do you have to do once you've downloaded the firmware. Do you run some bat files on the PC first?

noiwid said:
Hi,
After struggling hard to find how to update my unit (what doesn't seems possible with USB key in my case ; only with a MicroSD card), I finaly did it.
This new system is Android 11 based, and allow to connect to Android Auto wireless, sounds good uh?
My unit is AC8257 based, and has 8 core, 64 GB ROM, 4 GB LPDDR4 RAM @ 1024x600, but the upload also contains 800x600 & 1280x720px, there is .BAT files that make easyier to pick up the good Android_scatter file.
Here is where I come from first :
View attachment 5657323
And here is where I am now :
View attachment 5657325
Below, a picture of the app/system that detect that my phone is close by and ready to pair with Android Auto. I first had to connect it with wire to show him the way. It now seems automatic.
View attachment 5657327
You can find this wonderfull new firmware here (dated : 20220513), along with the MCU update : https://www.dropbox.com/sh/k2dotip66u7iekg/AAA69Z_ujnTZQMai5TbPXAbma?dl=0
8257升级教学（新）.MP430/06/2022 09:40
B200 wifi 1024x600 2022.05.13 ATCUPG.zip02/06/2022 10:37
mcu_202206071001BD2-1559.upd
I hope this will help
Click to expand...
Click to collapse
The file doesn't have all the scatter files for the other bat files. Looks like you saved/uploaded just what was created after you ran the 1024x600 bat file.

AML276 said:
The file doesn't have all the scatter files for the other bat files. Looks like you saved/uploaded just what was created after you ran the 1024x600 bat file.
Click to expand...
Click to collapse
hi,
oh. it seems this package is already set for 1024px (vendor did it) but it's easy to adjust
what's your resolution?

noiwid said:
hi,
oh. it seems this package is already set for 1024px (vendor did it) but it's easy to adjust
what's your resolution?
Click to expand...
Click to collapse
Thanks, I managed to work it out and unfortunately this new firmware hasn't fixed/changed my issue with the downloaded services being disabled. But has now added an issue of the hotspot enabling rather than wifi after every reboot even though I've disabled carplay (which seems to be what triggers it)

AML276 said:
Thanks, I managed to work it out and unfortunately this new firmware hasn't fixed/changed my issue with the downloaded services being disabled. But has now added an issue of the hotspot enabling rather than wifi after every reboot even though I've disabled carplay (which seems to be what triggers it)
Click to expand...
Click to collapse
hi,
i manage to disable this autowifi turn off/ tethering turn on.
on my side it was caused by Android Auto that detected my phone nearby (phone already associated thru wire), i turned off wireless settings on Android Auto on my phone (s20) and it stop turning off my wifi on every reboot.
about the launcher 4 display, are they same than on your prev system?

noiwid said:
hi,
i manage to disable this autowifi turn off/ tethering turn on.
on my side it was caused by Android Auto that detected my phone nearby (phone already associated thru wire), i turned off wireless settings on Android Auto on my phone (s20) and it stop turning off my wifi on every reboot.
about the launcher 4 display, are they same than on your prev system?
Click to expand...
Click to collapse
No, I just had the 1 'ugly' UI on the factory firmware. Not using Android auto on my phone (but I'll double check for any related settings) and I don't even think I've paired it via Bluetooth since the upgrade.

it seems this system (or unit?) don't allow to enable both wifi & wifi hotspot.
in wifi, advanced settings you can try to enable auto connection to wifi.
what I did on my side is paired my phone with bluetooth, and add a script on my phone with Bixby Routines to tell the phone to enable the wifi hotspit when he's connected to the car with bluetooth. As this way when I get in, bluetooth connection is automaticly done, the phone auto turn on hotspot, and car unit auto connect to it... when I disconnect bluetooth, it stops hotspot automaticly too...

mr499 said:
View attachment 5661745View attachment 5661747
Click to expand...
Click to collapse
I'm not sure how that happens. Did you have all 71 files saved to your USB drive as I initially had some trouble with the upgrade as my PC didn't copy all the files over. Maybe you can just do the upgrade a second time incase it missed a file. I've also read that some of these ac8257 units have fake images, mainly that it says android 10 but it's really 9. Probably needed to use aida64 first to check the hardware but what does the aida64 app say you have for ram?