Database Users

Rooting a Joying JY-UM138P2 Headunit (unclear if MTCC MTCD MTCE)

Hey guys,
I recently bought a Joying headunit (JY-UM138P2) and I am wondering if there is a way to root my device.
I tried Kongoroot and it failed. Joying Extra Tools won't work beacuse it is not a Sofia Model. And as far as I can tell there is no custom firmware for this model availabile.
Android Version: 6.0.1
CPU: ARM Cortex A53 eight-core 2+32GB PX5, GPU: PowerVR G6110
Info on System: APP 1024*600 2017-01-11 19:13:52
MCU Version: 2017-11-06 17:57:54 JY_(R68)__26_C26_6026_CAN(All)
Which is the main problem as I cannot tell from this if it is an MTCC, MTCD or MTCE unit.
In general I actually do only want to have read and write acceess to the system/media folder to be able to switchout the bootanimation.zip for a custom one that I created.
Thank you!

MrAbstoss said:
Hey guys,
I recently bought a Joying headunit (JY-UM138P2) and I am wondering if there is a way to root my device.
I tried Kongoroot and it failed. Joying Extra Tools won't work beacuse it is not a Sofia Model. And as far as I can tell there is no custom firmware for this model availabile.
Android Version: 6.0.1
CPU: ARM Cortex A53 eight-core 2+32GB PX5, GPU: PowerVR G6110
Info on System: APP 1024*600 2017-01-11 19:13:52
MCU Version: 2017-11-06 17:57:54 JY_(R68)__26_C26_6026_CAN(All)
Which is the main problem as I cannot tell from this if it is an MTCC, MTCD or MTCE unit.
In general I actually do only want to have read and write acceess to the system/media folder to be able to switchout the bootanimation.zip for a custom one that I created.
Thank you!
Click to expand...
Click to collapse
That's an fyt SoM... Solutions soon? Standby

MrAbstoss said:
In general I actually do only want to have read and write acceess to the system/media folder to be able to switchout the bootanimation.zip for a custom one that I created.
Click to expand...
Click to collapse
So far the Joying units were rooted on linux/adb level.
So if you can make an adb connection over WiFi to your unit, you already have root terminal access via adb.
That is enough for doing what you want.

Well, so far I managed to establish an ADB via wifi connection (without using an usb cable, as I dont have a male to male usb cable).
But it lists my headunit as an unauthorized device.

MrAbstoss said:
Well, so far I managed to establish an ADB via wifi connection (without using an usb cable, as I dont have a male to male usb cable).
But it lists my headunit as an unauthorized device.
Click to expand...
Click to collapse
Try this

MrAbstoss said:
Well, so far I managed to establish an ADB via wifi connection (without using an usb cable, as I dont have a male to male usb cable).
But it lists my headunit as an unauthorized device.
Click to expand...
Click to collapse
Hello, I just got my new HU (same as yours) I was able to root with kingoroot over usb adb. Go to Developer options (pw 3368), In the top right corner, underneath the back button is a menu icon. Tap and then tap "USB computer connection." Then select the bottom option. I believe only the left side USB will work (when facing front of HU) and you may need to toggle the USB debugging switch. Windows, adb based kingoroot will work.
Only problem, root will not stick after reboot...I was able to install xposed framework, and install xposed Additions. Additions still works after loss of root, so not so bad. I use a RcJoyCon to HW keyboard for my SWC I am still experimenting with other apps.
Does loss of root mean a locked bootloader?
I also had no male to male USB, just made my own. Just twisting the wires together worked fine.
Please share if you learn of any ways to retain root.

Will monitor this thread, as Im looking for root for JY-UM135P2 too. Will try the usb method soon.
EDIT: tried to make custom male to male usb. Connected the 5 wires. Laptop and hu doesnt recognise the cable.

steef84 said:
Will monitor this thread, as Im looking for root for JY-UM135P2 too. Will try the usb method soon.
EDIT: tried to make custom male to male usb. Connected the 5 wires. Laptop and hu doesnt recognise the cable.
Click to expand...
Click to collapse
My usb mod only involved 4 wires. Not sure whats going on with the extra wire, that may be the issue. Double check your connections.
Was able to re-root today using my X98 tablet, Good news for the future, when needed after car install. Its rare that you would need to reboot anyways, after all the software mods have been done . Deep sleep retains root, and the device is only drawing 0.01Amps(limit of measure)
I'll have more to share for these non MTCD/E, PX5 units in the future. Have found a way to keep user apps in memory, after deep sleep by using xposed modules. Tasker now stays active.

Oke today tried again. Bought male to male usb. Still the cable js not recognised in both usb ports. Enabled usb debugging and tried lower and upper option in the chinese menu from developer options. So no clue for now

Experimental and untested
As some of you might know I created a windows and linux script to install seSuperuser onto the Joying Sofia3GR Intel units.
I just compiled su and the Superuser.apk for the PX5 models. I do not have a PX5 and therefore this is completely untested!
Prerequisites:
- You need to have adb over tcpip working.
- (Linux) You need to have adb installed (but you have otherwise the line above would not be possible)
- Have a Joying PX5 ROM available so you can reflash if necessary.
On your pc:
Download the attached Superuser-JoyingPX5-Arm.zip onto your pc/laptop.
Unzip it somewhere on your pc/laptop.
On Windows: Run CMD.exe as Administrator.
On Linux like OSes: Open a terminal.
Change to the folder where you unzipped the files and change to the folder where the install.sh and install.bat are located.
On Windows: Run the install.bat script with the IP address of your Head Unit as a parameter: install.bat 192.168.178.50 (for example)
On linux: Run the install.sh script with the IP address of your Head Unit as a parameter: ./install.sh 192.168.178.50 (for example)
Wait until the script finishes.
Reboot your Head Unit.

gtxaspec said:
That's an fyt SoM... Solutions soon? Standby
Click to expand...
Click to collapse
Hi gtxaspec,
Are you planning to make an custom rom for these Rockchip PX5, FYT 6026 bases headunits?
I have your GTX joying ROM V9a3an on a Joying FYT6021 intel SoFIA and it works so much better than the stock rom.
Keep up the good work!

surfer63 said:
Try this
Click to expand...
Click to collapse
i finally got my device connected and also got the unauthorized message:
"This adbd's $ADB_VENDOR_KEYS is not set; try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device."
I tried everything i could find on the net and in your link but still had no luck...
Does anybody have an idea what else I could try?
The thing with my device is - in order to be able to connect to it with adb I had to change something in the developer options menu: in the top right corner there are 3 dots (even above the On/off switch) and there you can only choose "USB computer connection" - if you click on that a popup menu appears "USB MODE" and 2 chinese options to choose from. It was set on the first option but only works if set on the second option (it's chinese so i can not read it)

BMW Head Unit Revive

Hello to all
I have a BMW specific head unit running Android 8.1 and px6 processor.
The unit that i own is that one :
https://www.alibaba.com/product-det...l?spm=a2700.7724838.2017115.89.4e3cf8c9o0r9Dr
After performing a factory reset from android menu everything seemed ok.
Fresh start.
After leaving the car for some hours and come back , after start the ignition the head unit saws this ( photo attached )
After reading so much i see that the unit is in recovery but since there are no physical button except e reset hole i cannot move into the recovery and select any of the two options.
I tried to install an external usb keyboard but it is not recognized when restarting the unit with the keyboard hooked up.
I tried to install an external usb mouse that is recognized , i can move between the two options if i long press a button it highlights the option but does not give " enter " command.
Seller send me the firmware file tha is in .zip format so i cannot use the sd card tool .
I run out of options at the moment .
Can someone give a hand on this?
The best thing is have this zip file to img file , make a bootable sd card and start from there.
Is that possible?
Thank you all guys !
I attach some other photos of the board if you have any idea.
I opened searching for the C17 ic to do the shprting thing but unless i am blind i cannot find it

Ok, in order to update you will need to name the zip as "update.zip" - that's how i got mine to start.
Also you need to format the SD-Card fat32 and make sure it's empty when you copy the Update.zip file
The other option is to go in recovery but you need to find a working keyboard, for example a Logitech K120 for example works well with mine.
Try both USB ports, and try to cut the power completely when you restart and switch the port.
If you can't get a keyboard to work it's pretty tricky.
You will need to unsolder the small resistor shown it the picture, and bridge the connections next to it. (Don't loose it, you will need to put it back after flashing!)
After that you have access to the OTG, and you can use ADB - USB.
not sure it will work as expected in your case, because the unit is a bit different but if all else fails and you don't care about warranty, you could give it a try.
Can't post the image here.
the link is hxxps://ibb.co/gD2LWhb - just replace xx with tt

dice66 said:
Ok, in order to update you will need to name the zip as "update.zip" - that's how i got mine to start.
Also you need to format the SD-Card fat32 and make sure it's empty when you copy the Update.zip file
The other option is to go in recovery but you need to find a working keyboard, for example a Logitech K120 for example works well with mine.
Try both USB ports, and try to cut the power completely when you restart and switch the port.
If you can't get a keyboard to work it's pretty tricky.
You will need to unsolder the small resistor shown it the picture, and bridge the connections next to it. (Don't loose it, you will need to put it back after flashing!)
After that you have access to the OTG, and you can use ADB - USB.
not sure it will work as expected in your case, because the unit is a bit different but if all else fails and you don't care about warranty, you could give it a try.
Can't post the image here.
the link is hxxps://ibb.co/gD2LWhb - just replace xx with tt
Click to expand...
Click to collapse
Thank you for your reply
Well i managed to connect a keyboard and try both options
1) try again
2) factory reset data
in some cases the unit boots lets me play with it make adjustments etc.
But after a full reboot unit is unresponsive again and starts again the boot loop cycle.
After full reboot unit complains that the code i entered is correct but files are damaged and needs full factory reset.
I press the button to full reset but it stays forever in BMW Connecting screen.
The thing is that Android 8 has not .img file to use SD card tool to make a bootable sd so i need to get to recovery.
It has zip file that means OTA so i need recovery.
I do not have success on that.
I think that the SoM is corrupted and i do not know how to fix for now.
Any ideas for that?

If you can get into android some times, then do the following.
Try until you are booted in android.
When you manage to get in android, depending on where you play with the unit, try to have it connected to wireless, and with a laptop on the same wireless network.
Then, install Terminal Emulator on the unit.
Open it and try the following commands;
setprop persist.adb.tcp.port 5555
setprop sys.rkadb.root 1​Then, on your laptop install adb, and connect to the unit using ADB connect xxx.xxx.xxx.xxx (xxx... is the ip of the unit)
Once connected you can run the adb reboot recovery command to get in recovery(make sure you have the keyboard working)
Btw, you don't need the sdcard to be bootable.
Try to have the zip file you received directly on the sdcard. Should be PX6.zip, or update.zip, have them both.
Also if you have it on the sdcard when it boots in android, it will detect the update, and you can flash it directly from android.

dice66 said:
If you can get into android some times, then do the following.
Try until you are booted in android.
When you manage to get in android, depending on where you play with the unit, try to have it connected to wireless, and with a laptop on the same wireless network.
Then, install Terminal Emulator on the unit.
Open it and try the following commands;
setprop persist.adb.tcp.port 5555
setprop sys.rkadb.root 1​Then, on your laptop install adb, and connect to the unit using ADB connect xxx.xxx.xxx.xxx (xxx... is the ip of the unit)
Once connected you can run the adb reboot recovery command to get in recovery(make sure you have the keyboard working)
Btw, you don't need the sdcard to be bootable.
Try to have the zip file you received directly on the sdcard. Should be PX6.zip, or update.zip, have them both.
Also if you have it on the sdcard when it boots in android, it will detect the update, and you can flash it directly from android.
Click to expand...
Click to collapse
I will try that next time it will boots to Android .
The file that the seller send me was px6.zip
I will try both of them.
You mean try them on boot correct?

koutsouk said:
I will try that next time it will boots to Android .
The file that the seller send me was px6.zip
I will try both of them.
You mean try them on boot correct?
Click to expand...
Click to collapse
Have them on the sdcard all the time, and the sdcard connected.
once you manage to get in android, it should pop up a message with the update

dice66 said:
Have them on the sdcard all the time, and the sdcard connected.
once you manage to get in android, it should pop up a message with the update
Click to expand...
Click to collapse
i did that with a usb drive.
Update gone smoothly after request to remove the usb drive the unit boot up correctly but in the next full restart i had all the symptoms again.
I thought that you mean to have the files before boot and it will detect update before going into android.
I tried booting with sd card mounted with px6.zip and update.zip inside
It gives No Signal in every boot even with one of two files inside.
and for sometime now it does not boot to android at all !!

Sorry to invade your thread but I have a similar issue about updates. I have a PX6 unit from AVIN and they have released 2 updates for the unit but they just REFUSE to start. I have followed their instructions 100 percent and it recognizes the USB stick in either USB port but the updates don't start. I've tried multiple USB sticks and nothing works. Their support is worthless. Is there a way to launch the update manually?

hello, how can i get recovery mode??
I try whit reset buttom, touching with 5 fingers.. but nothing

ROM / Firmware/ Brick Recovery for 7" Android Head Unit AC8227l YT9217 YT9218 1/16GB

ROM / Firmware/ Brick Recovery for 7" Android Head Unit AC8227l YT9217 YT9218 1/16GB
Thanks everyone who contributed in my effort to fix my bricked device. Here is all that I have found useful in successfully reviving my device.
The files shared here are the ones that worked on my unit (see specs and pictures below) If your device is different, it may or may not work.
If the device has dedicated radio chip inside, the Firmware number will show as YT9218, if no radio chip, then it will show as YT9217
Note: if your device is not bricked, Make a full backup before trying another firmware.
I hope it helps. (donations are always welcome )
Memory dump:
firmware 20181222 HiFi: (Link) (thanks mazepa2000) (May 2019 update below)
Rooted TWRP firmware 20190523 HiFi: (Link)
Preloader (Boot_1) from other Similar Firmwares: (Link) <- Click again if it doesn't lead to the relevant post.
Download the one similar to your device's version.
Firmware via flash tool: Rooted TWRP 20190523 (Link) Thanks Maxkir
(You may need to remap side touch buttons in Factory settings (code 8888) -> Touch settings -> Click start -> Name of the button -> The button itself ->Repeat for all the buttons -> close -> ok).
Firmware for YT9213 Device: (Link) (Thanks pajurpl)
Update / Upgrade Files USB flash drive:
Firmware 20190522 HiFi: (Link) (Thanks foxgiggle , iSevenAuto)
Firmware 20190906: (Link)
MCU 3.1 (Link)(Thanks foxgiggle )
MCU 2.8 (Link) (Thanks lemmon and foxgiggle)
I hope it helps. (donations are always welcome )
Memory Dump Procedure via flashtool:
(Memory dump is only needed if you need full recovery from a backup. Otherwise you may only need to do the next part.)
Download and install MTK drivers. (Link)
Load scatter file and preloader (Link) in spflashtool. Press Ctrl Alt V , then go to Window and select "write memory". In file path select "user", in begin address put 0x0, In Region select the partition named "EMMC_USER". Hit Write memory. After that plug in the usb cable (connected to usb1 port). If the device is not detected, you need to power it on. If still not detected then you might need to short the two test points (see picture) (without power this time) and then plug in the usb cable. Remove the short when write process starts. Check if the issue is fixed. If its not fixed, then do the same to write boot2 and boot1 partitions as well. You may need to download Boot_1 specific to your original firmware from the link above.
Uploading Firmware (full or parts) via flashtool:
If you are uploading the firmware available in parts, you only need to upload "BOOTIMG" and "ANDROID" (SYSTEM).
You may also need to flash "RECOVERY". Remember to uncheck the preloader. Here is a nice instructions file. (Link) (thanks Maxkir)
There is more info and firmwares to chose from at 4pda forum.
Update / Upgrade Procedure via USB flash drive:
Copy the zip file (do not extract) to usb drive or microSD card, (formatted by SD Card Formatter). Connect to usb port 1 or 2. Go to Car Settings, System info. Click Android Upgrade.
--OR--
Extract the zip into a folder named XYAUTOUPG into the flash drive or microSD card, connect to usb port 1 or 2 and then reboot. Upgrade should start automatically. You might need to try with different USB drives or sd cards. For some reason this only works with certain usb and cards.
I hope it helps. (donations are always welcome )
MCU Upgrade Procedure via USB flash drive:
Extract the mcu file into flash drive or microSD card. Connect to usb port 1 or 2. Go into system info and update mcu.
Make a Full Backup/Memory Dump:
Open SPFlashtool, Select Memory Test Tab, Select only RAM Test (uncheck the rest), push start, and connect the unit. Save the information appeared, in a text file for later. (Read above "Memory dump procedure" for the usb connection setup).
Now go to ReadBack Tab, Double click on empty space next to tick mark, Select a folder where you want to store the dump file, and Type a name for the dump file you are going to creat, (ie. Boot_1, Boot_2, USER). Click Save. In next window "Readback block start address", select the region you want to make backup of (ie. EMMC_BOOT_1, EMMC_BOOT_2, EMMC_USER).
Start address is 0x0000000000000000
Length copy and paste from the text file you created earlier.
typically for Boot_1 and 2 the length is 0x0000000000400000
and for USER (16GB models) the length is 0x00000003a8000000
Click OK.
Now click on Readback and then connect the unit via usb cable. and Read process will start.
Do the same to make backup of all three partions. USER will take long time because its the largest partition.
RDS FM Radio:
Radio app with fixed RDS, channel names on buttons and HiFi: (Link) (thanks sjguk)
Copy to FMRadio directory /system/priv-app/FMRadio, rename to FMRadio.apk and change permission 764. (or 755 ?).
Channel name Editor: (Link) (thanks mclaught)
install as normal. You may need to install GalaPublicResources. Click top right dots.
I hope it helps. (donations are always welcome )
Multi Window Mode:
Go to root folder, look for build.prop. Open in text editor. Change the line ro.build.type=user to ro.build.type=userdebug.
If no such line is there, then simply add the line at the end. Save and exit. Go to Android settings, Developer options, look for multi window mode and enable it. Swipe down from the top of the window, Click on recent apps tile. You'll see the new multi window option there.
Subwoofer output Pin:
The default AUX_out pins are for mid range audio and is controlled by Mid slider in the mixer. The subwoofer output is on another pin (See Picture).
it is easy to remove one of the AUX_out pin and install it at the Sub output. this pin is controlled by Subw slider in the audio mixer.
Launchers UI1, UI2, UI4, UI5 (Link) (Thanks Maxkir)
Boot animation: (Resolution is 1024x600)
eg. (Link)
The animation preview didn't work for me, but I installed it anyway and it worked fine.
OBD Dongle Bluetooth Setting:
Open Bluetooth app, Click on settings, tap on the pin code "0000" and type in "1234" instead. Save settings.
Now search and connect the OBD dongle normally.
I hope it helps. (donations are always welcome )
Unit Specs:
motherboard marking YT9217 VER1.5 XY AUTO also 9218 VER2.4 XY AUTO near the antenna
Model no 8227L_demo android 8.1
Android YT9217C_00005_V003_20191402_HIFI
Kernel 3.18.22
DDR 1GB FLASH 16GB
CPU A7 1.3GHzx4
Amplifier AC7315 mos bile duct 45Wx4
AutoChip ARM AC8227L
Mediatek MT6323LGA
Kingston EMMC 16G

Im looking for the same ROM. Let me know if you find some info. Also Im looking for the AirRadio App. so I can use a Launcher.
Thanks

viktorsaari said:
the link takes me to the main page. and then its like finding needle in a haystack.
Click to expand...
Click to collapse
All relevant info about ROMs and flashing you can find in top header of this russian forum.
Look at the spoilers in the gray header layer and use Google translate to understand what is written there.
There are 3 ROM versions for the 8227L based head units. I downloaded and installed the oldest of the 3 (rooted and TWRP IMG included). Copy all files from the RAR to a flashdrive in root folder.
Turn off the head unit.
Connect the flashdrive to USB 1 slot of the head unit.
Turn on the the head unit.
The install process starts immediately after turning on.
It takes about 10 minutes.
When install process is ready, turn off the head unit.
Detach the flashdrive.
Turn on the head unit and it will boot with factory settings like a new device....
Note that there are also ROMs for flashing wit MTC flash tool downloadable.
But the versions for installing from USB sticks ( po russki - dla flashky) are more comfortable to install and I don't own a Windows pc. So this variant was my favorite method...
Regards and good luck...
Edit: if your unRAR program asks for a password for unpacking the RAR file, then use Eazy unRAR app from Playstore on your Android device - it ignores password lock in RAR file ...
Edit2: the 5th gray spoiler in the top header of the Russian forum hosts the links to the ROM RAR files...

The USB flash drive method didn't work for me, Device doesn't detect USB while booting up. I tried everything, connecting the test points, pushing reset button etc. to no avail.
SP flash tool does seem to work, I have tried uploading several available roms, only these three uploaded successfully,
full_8227L_demo-userdebug 6.0 MRA58K 1534513814 test-keys
Заводская прошивка под флештул от 09.11.2018 UI1 с переводом
20181224 TWRP ROOT перевод и эквалайзер от ноябрьской
but didn't turn on the device. Device turns on but I get a black (backlit) screen. What else is there to try?
bitstra said:
All relevant info about ROMs and flashing you can find in top header of this russian forum.
Look at the spoilers in the gray header layer and use Google translate to understand what is written there.
There are 3 ROM versions for the 8227L based head units. I downloaded and installed the oldest of the 3 (rooted and TWRP IMG included). Copy all files from the RAR to a flashdrive in root folder.
Turn off the head unit.
Connect the flashdrive to USB 1 slot of the head unit.
Turn on the the head unit.
The install process starts immediately after turning on.
It takes about 10 minutes.
When install process is ready, turn off the head unit.
Detach the flashdrive.
Turn on the head unit and it will boot with factory settings like a new device....
Note that there are also ROMs for flashing wit MTC flash tool downloadable.
But the versions for installing from USB sticks ( po russki - dla flashky) are more comfortable to install and I don't own a Windows pc. So this variant was my favorite method...
Regards and good luck...
Edit: if your unRAR program asks for a password for unpacking the RAR file, then use Eazy unRAR app from Playstore on your Android device - it ignores password lock in RAR file ...
Edit2: the 5th gray spoiler in the top header of the Russian forum hosts the links to the ROM RAR files...
Click to expand...
Click to collapse

No idea, what else you can try
If you can connect a PC to headunit and flashed a ROM with TWRP, may be you can use adb reboot recovery and clear data and cache via TWRP?
Hope you find a solution to boot your HU...
viktorsaari said:
The USB flash drive method didn't work for me, Device doesn't detect USB while booting up. I tried everything, connecting the test points, pushing reset button etc. to no avail.
SP flash tool does seem to work, I have tried uploading several available roms, only these three uploaded successfully,
full_8227L_demo-userdebug 6.0 MRA58K 1534513814 test-keys
Заводская прошивка под флештул от 09.11.2018 UI1 с переводом
20181224 TWRP ROOT перевод и эквалайзер от ноябрьской
but didn't turn on the device. Device turns on but I get a black (backlit) screen. What else is there to try?
Click to expand...
Click to collapse

No luck with adb either.
seems like my only option is if I could get the exact ROM for this device and flash it. The seller was less than helpful, so Aliexpress refunded me in full.
bitstra said:
No idea, what else you can try
If you can connect a PC to headunit and flashed a ROM with TWRP, may be you can use adb reboot recovery and clear data and cache via TWRP?
Hope you find a solution to boot your HU...
Click to expand...
Click to collapse

Received firmware files from seller, but its probably the update files, not the complete firmware. Unable to flash it via sp flash tool. (copy and paste the whole link until the .zip part)
http://download.seicane.com/doc/80/H5 Android 8.1 updated file.zip
Any ideas ???? my device is a brick at the moment, and doesn't recognise usb flash drive for updating.

Fixed.:victory:
Check the first post for detail.

So you flashed via sd card or flashtool?

viktorsaari said:
Fixed.:victory:
Click to expand...
Click to collapse
Hi How did you manage to fix it I have the same problem?
---------- Post added at 03:47 PM ---------- Previous post was at 03:46 PM ----------
viktorsaari said:
Received firmware files from seller, but its probably the update files, not the complete firmware.
http://download.seicane.com/doc/80/H5 Android 8.1 updated file.zip
Any ideas ???? my device is a brick at the moment, and doesn't recognise usb flash drive for updating.
Click to expand...
Click to collapse
The link is dead!

SP Flash tool.
ric69 said:
So you flashed via sd card or flashtool?
Click to expand...
Click to collapse

Thanks but flashtool is impossible to me as I don't have any USB recognition on my pc

Please see the original post, I added the things I did to fix it.
the link is not dead, copy and paste complete until the .zip part
anyway this zip file didn't help.
Check the first post for helpful material.
coffer said:
Hi How did you manage to fix it I have the same problem?
---------- Post added at 03:47 PM ---------- Previous post was at 03:46 PM ----------
The link is dead!
Click to expand...
Click to collapse

ric69 said:
Thanks but flashtool is impossible to me as I don't have any USB recognition on my pc
Click to expand...
Click to collapse
Did you get your connection to the PC yet?
---------- Post added at 03:28 PM ---------- Previous post was at 03:25 PM ----------
viktorsaari said:
Please see the original post, I added the things I did to fix it.
the link is not dead, copy and paste complete until the .zip part
anyway this zip file didn't help.
Check the first post for helpful material.
Click to expand...
Click to collapse
Thanks for that, wow the memory dump is massive more than 4Gb! Did you use format and download or just download in the Flash tool? Do you know the files the scatter file took from the memory dump? So, you didn't use any files from the first download where you took the scatter file from? I'm still having a problem connecting to my PC may have to use the hardware forced (testpoint) method!

You need usb male to male cable, attach it to usb1 on the device. but not yet connect to pc. Run the sp flash tool. and select the correct scatter file. Then run which ever function you need. after that connect the usb cable to pc while connecting these two test points (picture) with a small piece of wire to each other. After it is recognised and operation starts, you can release the jumper wire.
ric69 said:
Thanks but flashtool is impossible to me as I don't have any USB recognition on my pc
Click to expand...
Click to collapse

viktorsaari said:
You need usb male to male cable, attach it to usb1 on the device. but not yet connect to pc. Run the sp flash tool. and select the correct scatter file. Then run which ever function you need. after that connect the usb cable to pc while connecting these two test points (picture) with a small piece of wire to each other. After it is recognised and operation starts, you can release the jumper wire.
View attachment 4769616
Click to expand...
Click to collapse
Thanks, when I use the scatter file from the first download and put it with the files in the second download it only picks up the preloader file nothing else?

Hi, Scatter file is only needed to make sp flash tool recognise the partition table on the device. no need to download anything via scatter file. press Ctrl Alt V , then go to Window and select "write memory". Set start address to 0x00 Use this to write Boot_1 , Boot_2 and User, to EMMC_Boot_1, EMMC_Boot_2 and EMMC_User respectivly. thats it.
I hope it helps.
Thanks for that, wow the memory dump is massive more than 4Gb! Did you use format and download or just download in the Flash tool? Do you know the files the scatter file took from the memory dump? So, you didn't use any files from the first download where you took the scatter file from? I'm still having a problem connecting to my PC may have to use the hardware forced (testpoint) method!
Click to expand...
Click to collapse

Hi, yes, I fixed it. Check the first post for details.
NicoApple said:
Im looking for the same ROM. Let me know if you find some info. Also Im looking for the AirRadio App. so I can use a Launcher.
Thanks
Click to expand...
Click to collapse

Thanks but for most of us , we don't have any USB recognition to pc (or android devices) there is any sounds when plug

ric69 said:
Thanks but for most of us , we don't have any USB recognition to pc (or android devices) there is any sounds when plug
Click to expand...
Click to collapse
have you tried the test point method yet, I will try it tomorrow or Monday?

GuBang (Allwinner T8) Head Unit non sense

Hello,
I'm new with the Head Unit based on Android and If someone could help me answer some questions it could help me a lot.
I have this unit
In short:
Allwinner T8 board
MCU: T8.3.19-167-10-A43101-190504
System: V9.3.1_20181106.155925_CLC1-FD
Android 8.1
I'm trying to modify the ROM... and I don't care If I loose all the pre-installed crap inside.
So far, this is what I can do with this rom:
- Install APKs...
- Remove APKs...
- Connect via ADB over network
if beforehand inside the device I type "setprop service.adb.tcp.port 5555" in a terminal, then turn off and on the debug option in the developper menu. Thanks to serious manufacturers, all passwords seem to be shared between various if not all unit buyable over internet. The command and developper option trick must be done after EACH reboot, wich is fantastic behavior.
- Reboot to bootloader or recovery using adb
- In recovery, I can do nothing since there is no hardware key appart "reset"..., USB keyboard seem to not work either (I cry when I see the non reachable "mount /system" option ...).
- Use a hand made USB A-A cable to communicate with the device, when in bootloader. If "in rom" or recovery, adb or fastboot don't see the device.
So basically I can do nothing.
- I searched for firmwares, but I only find direct links to various site that provide update.zip or update.img or similar, but no flashable firmware from fastboot.
- If I found update firmware for T8 based board, my manufacturer version code (CLC1-FD) match none of those available here or on russian forums (AKW1-FD, JP1, TW2-FD,....).
- I can not use su (not allowed, setgid failed), to make boot and system image backup that I can eventually modify
- I tried KingRoot, Magisk (but I have no boot image ...) none work
- I tried "fastboot oem unlock[or whatever]", which just freeze fastboot and make it unusable until another reboot
So in the end, if someone know something about this hardware, if the another firmwares (AKW1-FD, JP1, etc) are compatible between devices, or if you know where I could ask for original firmware (oem image), or if it is possible to unpack the updates files to extract something exploitable (already tried for hours using basically all tools available like kitchen simg2img etc), please help me.
I have another device that will come to me, the ownice C800, but I think it will be the same problem. Unmodifiable over locked device.
I am working in a business where we need this kind of hardware inside a car, and we wanted to use one of the unit to make a proof of concept so we cannot afford custom hardware right now.
Thanks you if you had the patience to read this. Hope you can help.

Update and file recovery for Allwinner T8
Hello,
Do you find or have rom, firmware for Allwinner T8 and any app radio for testing?
Do you know? How make file *.img rom from my Unit?
Tomek

SP7731E TS7.4.5-100 HU Root or how access USB debugging with PC?

Hello, I have chinese radio with these spec:
CPU: Quad-SL8141E
Android: 10
Hardware info: sc7731e_1h10_v1.1.0 (sometimes it says SC7731e... and in other places it states SP7731e..., not sure what I have )
MCU: Ts7.4.5-100-13-A2A39D-220104 (whatever that is)
I'm looking for a way to root it OR access radio through USB debugging. I need to resize my screen as screen nearby borders is very insensitive (I found this ADB overscan command).
I couldn't find any root for this device, or maybe I can't search, maybe you know something?
Other thing is that I don't have option to turn debugging over Wi-Fi, there's only USB debugging option in developer settings (engineer mode or something like that also doesn't include that option). So I bought USB cable with type A male on both plugs, but I guess that won't work because I can't see this device on my laptop. Like the head unit is in host mode or something, not device mode? Maybe that I can change to "device" so it acts like smartphone when connected to PC? Terminal emulator doesn't work, root required to enter adb commands.
I'm completely exhausted with this screen and unit, many options missing, although it's working fine.
Or maybe there is a way to extract rom image from this head unit, copy to pc, edit it on PC so it has root and then update head unit with "fixed" rom?