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

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sikloka

New member
Jun 13, 2020
3
0
FMRadio

hi!
I’m using root firmware, I changed the fmradio apk, the rds is working but :D
I can’t change the volume of the radio, it’s either on maximum or muted. I tried many fmradio.apk but this problem always occured.apk but this problem always occured. Help...
Thanks!
 
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Smarty_009

Senior Member
Feb 7, 2016
329
62
Hi guys am on this stock ROM.

Hi friends, after lot of search somehow i I have landed here.

Yesterday i have purchased a new Android head unit. I want to take a full Backup of it's unrooted stock ROM with stock recovery. So that in case i ever brick it i will be able to flash it to factory state easily. Can someone please direct me to the link or procedure of how to make a full system Backup.

Details are as below:

Android YT9216B_00002_V004_20200319
but CPUZ says build ID: YT9218_0002_V004

OS: 8.1go XY AUTO:3.2 (8227L)
CAN Pro: 3.0 ( 8227L)
DDR: 2G. FLASH:32G
CPU: A7 1.3GHz x4

Amplifier AC7315MOS bile duct 50Wx4
Display: 1024x600
MCU: 3.1 ( 8227L)
MODEL Name: 8227L_demo

Security patch Nov 5, 2017

Kernel 3.18.22 [email protected]_poweredge_r730#6
Thursday March 19 20:51:37 CST 2020


Build No. Android-trunk-m0.AC8227L-V1.0
Custom build Android-trunk-m0.AC8227L-V1.0

Let me know if anything else is required.

I want the procedure to Backup the factory state.
Suggestions to try root and new ROM will be welcome.


I have these problems.
1. Am not able to update Agama launcher. I already have licensed copy but it's not shown in Play Store.

2. Radio app only has FM option. I can't find AM in radio.

3. Whenever radio app and navigation app run together. The volume of radio is higher and navigation instructions play in background at lower volume. I can't understand the voice guidance. Navigation app couldn't silence radio app.

4. Split screen option is not working. To play two apps side by side.

5. When I try to install Google assistant from play store I get a message saying my device is not supported. I couldn't install and use Google assistant and Android AUTO.

Any help will be welcome. My ROM is stock ROM.
 

Invincibl3

Member
Sep 18, 2012
18
0
Thank You!

Thanks mate!

I was able to revive my soft bricked device using the stock firmware.

I tried the rooted firmware as well, however, it has issue in volume control. Volume stay either completely full or muted, no mid way. Not sure if anyone else is facing similar issue with the rooted one.

After a few hours of torment, my beloved radio managed to put me on my feet.
I uploaded with preloader selected because I had a brick (black screen) radio and it didn't turn on. If your radio has no brick, uncheck the preloader when downloading the firmware.
No power supply needed for uploading, just usb (4pin)
Below full firmware with preloader and scatter full firmware package YT9213A_00009_V001_20191126 ready to be uploaded by SP Flash Tool.
Below the upload instructions are recorded quickly.
I saw that someone above was also looking for a preloader for this model should definitely be useful.
YT9213A_00009_V001_20191126 (Link)
Instruction Video (Link)

Update:
We also managed to upload "Memory Dump Rooted TWRP firmware 20190523 HiFi" from the first post after creating the ready firmware to be uploaded by Download options in SP Flash Tool as above of course with uncheck preloader
Rooted TWRP firmware 20190523 HiFi (Link)
View attachment 4961857
 
Oct 28, 2007
9
0
Hello. I have a problem with this radio. I updated firmware this radio and the touch screen is not working well. it seems to me that first there is a bad resolution, and secondly when I click the right part of the screen the left side is touching. can it be changed somehow? I haven't backed up my old firmware, and I can't find the right one.

https://youtu.be/mruCP2kdgac


Update:

I make recalibration of touch screen, now is better but still got problem. I tried upgrade few firmware and in all still same problem. I also changed the resolution of the touch panel in factory settings, but still without any changes.

https://youtu.be/JZJgc-zhqr8


in the attachment there is a photo of the original firmware embedded in the radio that I did not back up.
 

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Smarty_009

Senior Member
Feb 7, 2016
329
62
Hello. I have a problem with this radio. I updated firmware this radio and the touch screen is not working well. it seems to me that first there is a bad resolution, and secondly when I click the right part of the screen the left side is touching. can it be changed somehow? I haven't backed up my old firmware, and I can't find the right one.



Update:

I make recalibration of touch screen, now is better but still got problem. I tried upgrade few firmware and in all still same problem. I also changed the resolution of the touch panel in factory settings, but still without any changes.



in the attachment there is a photo of the original firmware embedded in the radio that I did not back up.
What is the resolution you have set.....
 

Invincibl3

Member
Sep 18, 2012
18
0
Has anyone tried Google assistant? Any luck with it, i have tried and it is not working for me.

I have rooted firmware with magisk, is there any module that can help?
 
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Lollomix01

Member
Feb 8, 2015
14
0
Hi, I have Su 9701 unit 1/16 mega Android 8.1 stock firmware, i search FM Radio app with RDS function, any help?
Thx

Inviato dal mio Redmi Note 8T utilizzando Tapatalk
 

Matchless 2015

Senior Member
Nov 13, 2015
100
47
Help with TWRP

I have not been able to join the 4pda-ru forum as I cannot do the Capcha that is in Russian and that thus cannot download from their site.
I need a copy of the TWRP recovery for my 9216C 2/32.
The file is on the first page of forum 4pda-ru, in " Head unit ML-CK1018 and similar, based on MT / AC8227L processor" and the file is shown as TWRP_fr2_v.1 / 2.
This forum may not like me pasting a link.
Very much appreciated!:)
 
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viktorsaari

Senior Member
May 19, 2019
362
169
I have not been able to join the 4pda-ru forum as I cannot do the Capcha that is in Russian and that thus cannot download from their site.
I need a copy of the TWRP recovery for my 9216C 2/32.
The file is on the first page of forum 4pda-ru, in " Head unit ML-CK1018 and similar, based on MT / AC8227L processor" and the file is shown as TWRP_fr2_v.1 / 2.
This forum may not like me pasting a link.
Very much appreciated!:)
Download mobile app for 4pda, join without captcha. There are youtube videos about this.
 

BFGnom

New member
Jul 11, 2020
1
1
I have not been able to join the 4pda-ru forum as I cannot do the Capcha that is in Russian and that thus cannot download from their site.
I need a copy of the TWRP recovery for my 9216C 2/32.
The file is on the first page of forum 4pda-ru, in " Head unit ML-CK1018 and similar, based on MT / AC8227L processor" and the file is shown as TWRP_fr2_v.1 / 2.
This forum may not like me pasting a link.
Very much appreciated!:)
Hi firend, i from 4pda, and sorry my english) If you still need this recovery i can send in private message and you post them here because I can’t post links yet.
 
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Ipse_Tase

Senior Member
Feb 29, 2012
635
103
Samsung Galaxy S21 Ultra
First and foremost, I want to thank @viktorsaari and @gouster3 for posting detailed instructions and taking the time to provide the files as well.

EDIT: NVM ignore the comments about bricking it, I was able to restore from the from the dump I had, for some reason it never pushed it until I shortened the test points...which was not the case before.
I poured my heart to the wrong crowd :)

Word to the wise: "write memory" actually writes to EMMC...not sure how hard is to STOP calling it "memory", when it's a flash. Also, Russian for "How to fill a dump" is not exactly what Google translate thinks. It's not how to create the dump, but how to restore it. Lesson learned the hard way.

EDIT2: Also, in the spirit of sharing - the radio is a separate module (either separate chip, or built into the MCU) talking directly to the MCU and therefore you CANNOT mute it during navigation or apply FX like Viper4Android...it's not processed by the OS.
 
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    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 ):highfive:

    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)
    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)

    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.

    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, 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.


    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 (Link), 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 ):highfive:

    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
    4
    the link takes me to the main page. and then its like finding needle in a haystack.

    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...
    4
    new firmware and MCU

    comming soon:
    16808269.png
    3
    Lots of info on those headunits (russian, use google translate):
    http://4pda.ru/forum/index.php?showtopic=936535

    pinout:
    3
    Very nice indeed.
    Im using Agama launcher at the moment, far better than others in my opinion.
    a bit off topic...

    Updated to MCU 2.8 - automatic acc off time delay works > 24hours...
    I modded the UI2 Launcher a little bit for my personal needs.
    See attached screenshot.
    (my car, VW golf plus 2013, is now shown in Homescreen...)
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