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

[dodo6]

I think you can root through the Magisk app. I did this on the yt9218. I transferred the Boot.img file to the device, modified it via the Magisk app, then transferred the modified Boot.img file back to the PC and uploaded the modified Boot.img via SPFlashtool. After starting, check in Magisk root rights. I also use the Magisk app as a manager for root rights.

edit..
otherwise, if you need it, I flashed TWRP for recovery after rooting. And I only have 1GB of ram, so I removed all google services through TWRP via kill_gapps.zip, then installed the app L_Speed.apk to optimize processes and the system, and the response is significantly faster. I downloaded the app I use outside the play store. I have never used Google Personal account on the main unit for security reasons

 

[air32]

Thank you for your reply, i will check the root procedure.

Which TWRP you used? And im also interested in the two zips for optimizing system performance, you got any links for me?

EDIT: Rooting does not work, i did it like you described (Preserve AVB 2.0/dm-verity and Patch vbmeta in boot image were not picked in the options), after flashing the new boot.img magisk itselfs says installed 25.2 and an app like link2sd or mixplorer accesses root but when i try to delete an app or rename a system file it says no file deleted, no file renamed.

When open Magisk it says "Abnormal State A "su" binary not form Magisk has been detected. Please remove any competing root solution and/or reinstall Magisk"

 

[dodo6]

I used twrp from the zip/rar extremeMod android 8 package. It's on the first page. I think there's also instructions for rooting via magisk manager. The files kill_gapps.zip and the app L_Speed.apk are on the 4PDA website. There's a lot of useful stuff there. The site is in Russian, use a translator. You must be registered to download the app, firmware, etc.

[GUIDE] Android 8 API27 SUPERMOD for YT9216BF YT9216CFJ YT9216BJ YT9216BFJ YT9216CJ - root, Viper4Android, TWRP, Custom UI, brick recovery and more

Hi all, If you want to greatly improve the way your head unit works, sounds and looks like - you've come to the right place! Why install this? With this package you will greatly improve: Stability Speed User Interface Sound tweaking options...

forum.xda-developers.com

 

[Emilson]

Same, I used supermod8 package to get twrp recovery and magisk root, just by flashing magisk.zip package thru Twrp recovery.

But after rooting the system took much longer to load, not sure why and i had couple other issues after.

Anyway, twrp recovery has built-in 'File manager' so you can explore and modify whole system files without root.
So im not using magisk root anymore, just deleted apps that i didnt need thru twrp 'file manager'.

Ps.
Lastest addon from xyauto, adds 21 themes to choose from.
upload via usb by 'android upgrade' thru car settings.
Ui_1024X600_1280X720_21sets

 

[Emilson]

I were not able to use supermod8, as i already posted in that thread i get a bootloop right after installing the rom on first boot

i think is just a waste of time trying to get supermod8 working.

I didn't mention it earlier, but I believe that it's worth to flash your own backuped metazone.bin when flashing different firmware, because I think that metazone contains a lot of settings dedicated to a given motherboard like buttons, touch, screen etc.

If You are looking foor 'speed' i remember that ExtremeMod said that stock android 6.0 runs fastest.
But it requires downgrading preloader.
Of course old Os comes with outdated can data base, oldest apps etc.

Heres package of fake8.1 wich is android 6.0, with preloader included 8.1Go_1024X600

Personally, I prefer to use the latest releases.

 

[dodo6]

I don't know about that speed. Android8 is better for me. The first start after rooting was longer, subsequent starts are fast, I keep noticing that I don't have google services. I don't have any problems with android8, only one when it sometimes restarts while running,it did the same randomly on android6 . I don't know why it sometimes restarts, it does it randomly, but in any case, removing all google services from the system and installing L_Speed.apk are the cure for my small 1gb ram. I can see it when I start Sygic, for example. It's faster than on android 6, but I also had google services there, so maybe it's that.

 

[dodo6]

Thank you for your reply, i will check the root procedure.

Which TWRP you used? And im also interested in the two zips for optimizing system performance, you got any links for me?

EDIT: Rooting does not work, i did it like you described (Preserve AVB 2.0/dm-verity and Patch vbmeta in boot image were not picked in the options), after flashing the new boot.img magisk itselfs says installed 25.2 and an app like link2sd or mixplorer accesses root but when i try to delete an app or rename a system file it says no file deleted, no file renamed.

When open Magisk it says "Abnormal State A "su" binary not form Magisk has been detected. Please remove any competing root solution and/or reinstall Magisk"

If you flashed twrp, try using twrp and delete what you don't need. As Emilson wrote..

I had the same error on magisk. I downloaded an older version called Magisk Manager, made root, and then updated magisk. If you have a root file browser, after opening magisk for the first time, it asks if you have granted root rights for the root browser, or download another app to manage root rights and remove magisk. e.g. SuperSU

 

[air32]

Hey guys, thanks for your useful help, ive tested and configured a lot and now the system runs nice for what you can expect from the hardware. I stayed with the latest version. There is only one last thing: Anyone of you found a working radio app which provides channel names? the one on the first page does not work, app crashes at startup. Unfortunately the links on 4pda website (which has newer version) are down.

Thx,
air32

 

[dodo6]

Hey guys, thanks for your useful help, ive tested and configured a lot and now the system runs nice for what you can expect from the hardware. I stayed with the latest version. There is only one last thing: Anyone of you found a working radio app which provides channel names? the one on the first page does not work, app crashes at startup. Unfortunately the links on 4pda website (which has newer version) are down.

Thx,
air32

are you registered on 4pda? nothing can be downloaded without registration. have you tried the channel name editor from the 1st page? give a photo of your radio app

my radio.originally it was 9218DH android6.I updated to 9260 android8 from xyauto.
the radio worked the same way on android6, it just had different graphics

 

[air32]

Not im not registered and im not able to, because i cannot read russian. Chrome translates the website but not the captcha method on registration, you have to solve a calculation but with cyrillic alphabet (see screenshot).

I have tried the FMRadio app from first page, not the channel editor for now. You just use the channel editor? I thought the newer versions of the FMRadio app has more benefits (https://4pda.to/forum/index.php?showtopic=936535&st=20640#entry92095779) there is FMRadioEditor-1.3.apk and also FMRadio-mclaught-design13.apk but it says Ой! Ошибка 404, which is normally a meaning for download is deleted.

My Radio app is the same like yours.

You have login for 4pda?

 

[dodo6]

Not im not registered and im not able to, because i cannot read russian. Chrome translates the website but not the captcha method on registration, you have to solve a calculation but with cyrillic alphabet (see screenshot).

I have tried the FMRadio app from first page, not the channel editor for now. You just use the channel editor? I thought the newer versions of the FMRadio app has more benefits (https://4pda.to/forum/index.php?showtopic=936535&st=20640#entry92095779) there is FMRadioEditor-1.3.apk and also FMRadio-mclaught-design13.apk but it says Ой! Ошибка 404, which is normally a meaning for download is deleted.

My Radio app is the same like yours.

You have login for 4pda?

My radio supports saving station names. I don't use the channel editor, I don't need it. As for the captcha, when calculating in the Russian alphabet, use a second phone that can translate through the camera in real time (Google translator app) and you're done. There are different ways. Try it

this 4pda theme should be yours if you have a 9216cj without DSP android8, or let me search for your type

ГУ YT9216B , 2/32 , андроид 8.1 на базе процессора АС8227L - 4PDA

ГУ YT9216B , 2/32 , андроид 8.1 на базе процессора АС8227L, [Головное устройство][Автомагнитола][Android]

4pda.to

 

[ardonhs]

Can anyone tell me the latest fw version to download to My radio?

 

[mohamed taher elbstani]

Not im not registered and im not able to, because i cannot read russian. Chrome translates the website but not the captcha method on registration, you have to solve a calculation but with cyrillic alphabet (see screenshot).

I have tried the FMRadio app from first page, not the channel editor for now. You just use the channel editor? I thought the newer versions of the FMRadio app has more benefits (https://4pda.to/forum/index.php?showtopic=936535&st=20640#entry92095779) there is FMRadioEditor-1.3.apk and also FMRadio-mclaught-design13.apk but it says Ой! Ошибка 404, which is normally a meaning for download is deleted.

My Radio app is the same like yours.

You have login for 4pda?

If you want something else from 4pda, write me the link, so I can download it

 

[air32]

If you want something else from 4pda, write me the link, so I can download it

Thank you friend, thats all.

 

[ardonhs]

Same, I used supermod8 package to get twrp recovery and magisk root, just by flashing magisk.zip package thru Twrp recovery.

But after rooting the system took much longer to load, not sure why and i had couple other issues after.

Anyway, twrp recovery has built-in 'File manager' so you can explore and modify whole system files without root.
So im not using magisk root anymore, just deleted apps that i didnt need thru twrp 'file manager'.

Ps.
Lastest addon from xyauto, adds 21 themes to choose from.
upload via usb by 'android upgrade' thru car settings.
Ui_1024X600_1280X720_21sets

Its possible to get the themes without flash?

 

[Emilson]

Do you mean without usb flash / pendrive ?
I tried place the package in radio storage but the system didnt detect the update.
but maybe i did something wrong.
Package placed on pendrive was decected and updated successfully.

Probably you can unpack package and try to push files thru adb, but upgrade thru usb is way easier.

 

[Kruno25]

Same, I used supermod8 package to get twrp recovery and magisk root, just by flashing magisk.zip package thru Twrp recovery.

But after rooting the system took much longer to load, not sure why and i had couple other issues after.

Anyway, twrp recovery has built-in 'File manager' so you can explore and modify whole system files without root.
So im not using magisk root anymore, just deleted apps that i didnt need thru twrp 'file manager'.

Ps.
Lastest addon from xyauto, adds 21 themes to choose from.
upload via usb by 'android upgrade' thru car settings.
Ui_1024X600_1280X720_21sets

Hi, can this be flashed on any HU with android? Mine is Junsun V1 2/32,Allwinner chip 8227L?

 

[Emilson]

I don't think so
I don't remember if junsun has usb upgrade option in the system like xyauto HU.
not sure if such an upgrade will even pass verification or just be rejected.
you can try to manually unpack and put the files into the system but it doesn't guarantee that it will work.

 

[Kruno25]

I don't think so
I don't remember if junsun has usb upgrade option in the system like xyauto HU.
not sure if such an upgrade will even pass verification or just be rejected.
you can try to manually unpack and put the files into the system but it doesn't guarantee that it will work.

Thank You for answer. Junsun is rebranded T3 P3 model....

 

[Eljay227]

Hi guys, please i need some help. I have a 9212a, i used USB to upgrade the system, after upgrade the screen resolution was too big (screen was showing top left of whole page) i managed to click around and do another android update with another file, after rebooting the screen now is black (but backlit). My phone was connected previously, so when i start the car, music plays via bluetooth. meaning the unit works but no display.

I want to flash using spflash tool. my pc doesn't see the device at all. The cable works on my android tv to PC using male-male usb. So cable is fine.

Pc shows no sign of device. I connected USB to pc while unit powered from my car. nothing... I tried test points... still nothing on my PC. I tried Power from my car and test point together. still nothing. The test point i used was posted earlier in this topic.

Can anyone advise maybe there's a different test point? or something I'm missing?

Sorry for the long post, trying to just rule out things I've already tried. Any help will be massively appreciated. thanks