ROM / Firmware/ Brick Recovery for 7" Android Head Unit AC8227l YT9217 YT9218 1/16GB
- Thread starter fani
- Start date
I understand then the cables that are behind the black plug are connected to the radio
Absolutely bro, every time it is very difficult to bring the unit home or carry the laptop in the car, this way we can easily load it with USB stick, I will take new and detailed photos soon
Sound solution i found for now, is flashing just a bit older release 9216BJ_9216CJ_"8239"_XYAUTO_7.3.7
Volume increase much faster.
This Firmware probably is just adapted for some '8239' sound chip ? Not sure.
I don't want to disassemble the radio again to confirm it. if it works it works.
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I think the sound is much better quality, I understand this very well since I use an amp and subwoofer, the volume has increased to 63 degrees compared to the past and the sound ranges have increased.
Friend makes the pc recognize my device but by mistake I checked the preloader box now the radio does not respond
will there be a solution?So now you have to try method with the testpoints.
That should works even if you erased the preloader.
i actually tried the 'testpoint method' couple of times and i know that sometimes is pretty hard to connect these pins together to make a solid connection.
You need to use a good conductor, maybe a copper wire.
Then try to flash preloader dumped from F9212 model i found on russian forum.
That should works even if you erased the preloader.
i actually tried the 'testpoint method' couple of times and i know that sometimes is pretty hard to connect these pins together to make a solid connection.
You need to use a good conductor, maybe a copper wire.
Then try to flash preloader dumped from F9212 model i found on russian forum.
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I have done it several times and the device NEVER NEEDS to be powered. mediatek drivers must be installed. use only 4 USB pins and a male-male cable to the PC. disconnect everything else. 1. in the case of recovery through test points, it is necessary to enter the format mode (auto-format flash) through the spflash tool.
2. give start. after
3. connect the test points, for example with tweezers.
4. connect the USB to the PC.
5. after detecting the device, disconnect the test points.
6. After auto-format flash OK, disconnect the USB cable.
7. in the Spflash tool install a new system via all format+download. (must be a preloader because it was auto-format) tried many times
2. give start. after
3. connect the test points, for example with tweezers.
4. connect the USB to the PC.
5. after detecting the device, disconnect the test points.
6. After auto-format flash OK, disconnect the USB cable.
7. in the Spflash tool install a new system via all format+download. (must be a preloader because it was auto-format) tried many times
Hello, have you got to do with test points? I have the same problem, and mine is 8229 different from 8227 and yes, we need suply 12V to headunit
I searched on the web for 'testpoints' on JAC8229 motherboard and found one.
I marked on the picture the pin that most probably you could use as the testpoint.
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Hello, I have an Android screen for the car, it works for a moment, then restarts. Do you have a software program for it? Thank you.
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2Same, 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
1I 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...
forum.xda-developers.com
1
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.1I 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.1
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 -
39ROM / 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 16G5
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...4Lots of info on those headunits (russian, use google translate):
http://4pda.ru/forum/index.php?showtopic=936535
pinout:
3Very nice indeed.
Im using Agama launcher at the moment, far better than others in my opinion.
