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

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WarOfDevil

Member
Apr 11, 2020
8
0
Hi guys, I have this device:

Android: YT9217C_00005_V003_20190410_HIFI
System: Android 8.1
Kernel: 3.18.22
CPU: A7 1.3Ghz x4
Capacitance: 10000uF
CanPRO: Raise-09-12Fiesta-V4.1-Connect
DDR: 2Gb
Flash: 16Gb
Display: 1024x600 9" Inch
Amplifier: AC7315 MOS bile duct 45W x4
MCU1: HW8227L-3.3-SW0-1.9 (Then 3.1).

The steering wheel buttons do not work with the included Raise CAN decoder. However I noticed something:
If I go in Factory menu (8888 pin) and I click on "MCU info test" or "CANbus debug", I have no output when I click on Start. I tried to update the MCU firmware to version 3.1, still same issues. But from the system info I can see the CAN decoder being connected.
I have the feeling that my android firmware cannot talk to MCU and CAN, is there something I need to install to make it work?
 

siposalex24

Member
Apr 10, 2020
6
0
Hello, I have the YT9213A / Android 9.1 / MCU 3.1, as you can see in the image http://prntscr.com/rzw9ll
My problem is that I can't control the balance or the equalizer. The icon doesen't appear on my device and when I move any slider from the equalizer, nothing really changes in terms of sound. I've heard that is a problem with the firmwire or something like that but I can't figure it out what should I do. Which are the steps in order to reinstall/reflash a compatible Rom for this model. If somone could help me I would really appreaciate it because right now this forum is my only hope. The sound is really ****ty and it doesen't worth to keep it at this state if I can't find any solution to fix it somehow. Here is a picture with the equalizer menu, where the audio settings icon is missing http://prntscr.com/rzwe9z
Also, when the rear (parking) camera activates, it doesen't make any sound to warn me about the obstacles distance.
Thank you and I'm waiting for any solution!
 

JIFESF

New member
Apr 2, 2020
4
0
hi iam new
and i have problem with my unit
i tried to install new frimware with sp flash tool but it didnt work and now my unit is dead
every time i try to install a frimware it give error mismatch or cannont find memory
if any had the original frimware
info
A005-YT217B013
20190311
 

WarOfDevil

Member
Apr 11, 2020
8
0
Hi guys, I have this device:

Android: YT9217C_00005_V003_20190410_HIFI
System: Android 8.1
Kernel: 3.18.22
CPU: A7 1.3Ghz x4
Capacitance: 10000uF
CanPRO: Raise-09-12Fiesta-V4.1-Connect
DDR: 2Gb
Flash: 16Gb
Display: 1024x600 9" Inch
Amplifier: AC7315 MOS bile duct 45W x4
MCU1: HW8227L-3.3-SW0-1.9 (Then 3.1).

The steering wheel buttons do not work with the included Raise CAN decoder. However I noticed something:
If I go in Factory menu (8888 pin) and I click on "MCU info test" or "CANbus debug", I have no output when I click on Start. I tried to update the MCU firmware to version 3.1, still same issues. But from the system info I can see the CAN decoder being connected.
I have the feeling that my android firmware cannot talk to MCU and CAN, is there something I need to install to make it work?

No one with this issue?
 

coffer

Senior Member
Feb 19, 2011
88
6
EALING
I've recovered a HU but when it boots up it goes into the android bootloader screen and moves up and the recovery - ADB and normal boot options. But as I have no touch screen yet I can't select any option. Anyone solved this problem?
 

Chroffey

Member
Mar 26, 2020
12
1
Hi guys, I have this device:

Android: YT9217C_00005_V003_20190410_HIFI
System: Android 8.1
Kernel: 3.18.22
CPU: A7 1.3Ghz x4
Capacitance: 10000uF
CanPRO: Raise-09-12Fiesta-V4.1-Connect
DDR: 2Gb
Flash: 16Gb
Display: 1024x600 9" Inch
Amplifier: AC7315 MOS bile duct 45W x4
MCU1: HW8227L-3.3-SW0-1.9 (Then 3.1).

The steering wheel buttons do not work with the included Raise CAN decoder. However I noticed something:
If I go in Factory menu (8888 pin) and I click on "MCU info test" or "CANbus debug", I have no output when I click on Start. I tried to update the MCU firmware to version 3.1, still same issues. But from the system info I can see the CAN decoder being connected.
I have the feeling that my android firmware cannot talk to MCU and CAN, is there something I need to install to make it work?

I had a similar issue until I went into protocol settings and set it to the type of vehicle. Also, I read some steering wheel controls need extra wiring to the Key1 wires on the stereo. Sorry, not a lot of help but that was my experience
 

viktorsaari

Senior Member
May 19, 2019
362
169
I've recovered a HU but when it boots up it goes into the android bootloader screen and moves up and the recovery - ADB and normal boot options. But as I have no touch screen yet I can't select any option. Anyone solved this problem?
you need to push Vol- button to "ok" any option. there is a picture in 1st post.
 

WarOfDevil

Member
Apr 11, 2020
8
0
I had a similar issue until I went into protocol settings and set it to the type of vehicle. Also, I read some steering wheel controls need extra wiring to the Key1 wires on the stereo. Sorry, not a lot of help but that was my experience

I already went in that menu and select Raise - Ford - Fiesta 09_12, which was the factory default settings, and also doesn't work. Tried to select other CAN/Ford type, same issue. I am really curious, if you go in the factory setting, click on MCU debug -> Start, do you have any messages on the screen? I don't have any debug message for MCU and CAN. I suspect there is something wrong on my Android system, maybe a missing package or wrong MCU firmware.
 

Chroffey

Member
Mar 26, 2020
12
1
I already went in that menu and select Raise - Ford - Fiesta 09_12, which was the factory default settings, and also doesn't work. Tried to select other CAN/Ford type, same issue. I am really curious, if you go in the factory setting, click on MCU debug -> Start, do you have any messages on the screen? I don't have any debug message for MCU and CAN. I suspect there is something wrong on my Android system, maybe a missing package or wrong MCU firmware.

Just trying to upload some screen pictures
 

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WarOfDevil

Member
Apr 11, 2020
8
0
MCU doesn't do anything when I press start, CANBUS runs a list of numbers as shown in the pic. Means nothing to me but might yo you.

Thank you so much!!! That help a lot :)

So apparently MCU doesn't output any info, even on a working device. But for CAN that means my android is definitely missing some CANbus APK or driver. I will look into that ;)
 

Zack9x8

Member
Jul 30, 2013
28
1
I'm kind of a noob to this Android radio business but how exactly do you get the root firmware on the device I've tried to get into recovery witb the reset button and no luck ?
Also I have xyauto_9213A_8227L_demo-
 
Last edited:

Cemil66

Member
Mar 13, 2020
5
0
Hello, I have the YT9213A / Android 9.1 / MCU 3.1, as you can see in the image http://prntscr.com/rzw9ll
My problem is that I can't control the balance or the equalizer. The icon doesen't appear on my device and when I move any slider from the equalizer, nothing really changes in terms of sound. I've heard that is a problem with the firmwire or something like that but I can't figure it out what should I do. Which are the steps in order to reinstall/reflash a compatible Rom for this model. If somone could help me I would really appreaciate it because right now this forum is my only hope. The sound is really ****ty and it doesen't worth to keep it at this state if I can't find any solution to fix it somehow. Here is a picture with the equalizer menu, where the audio settings icon is missing http://prntscr.com/rzwe9z
Also, when the rear (parking) camera activates, it doesen't make any sound to warn me about the obstacles distance.
Thank you and I'm waiting for any solution![/QUOTEHello andorid 9.1 software where can I download helpQUOTE/]
 
Last edited:

supernielsen

Senior Member
Jun 24, 2012
110
10
We really need a new rom for these headunits completely wiped..
My hu is full storage wise and i havent really installed much... Filled with stupid software..

Does anyone have a safe to delete list so i can remove some of the original apk's
 

coffer

Senior Member
Feb 19, 2011
88
6
EALING
Hey guys no one seems to have answered the ques regarding Google assistant. The ROM I installed says that Google assistant isn't available for this device. Anyone solve this?
 

Shabbee

Member
Feb 20, 2020
19
1
Milton Keynes
Information sharing re Video inputs

I just solved a problem I had where none of the video inputs would display an image. The problem was due to incorrect video format setting. To modify go into factory settings and select the second menu option, here you can change a ton of settings relating to reversing camera and radar. It's very comprehensive and full featured, well worth a look if you have a camera and canbus connected.
 

viktorsaari

Senior Member
May 19, 2019
362
169
I just solved a problem I had where none of the video inputs would display an image. The problem was due to incorrect video format setting. To modify go into factory settings and select the second menu option, here you can change a ton of settings relating to reversing camera and radar. It's very comprehensive and full featured, well worth a look if you have a camera and canbus connected.
I tried to connect the Nokia AV cable to share smartphone to the device but I only got sound no video.
Probably worth a recheck. Which settings did you end up using regarding the AV inputs ?
 

Maro433

Member
Apr 5, 2020
15
2
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


you are GOD man thank you so much my divice is alive agian y expende more than 2 days traing to malke working but maken de the briged with tha cable marke a a work
 
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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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