• Introducing XDA Computing: Discussion zones for Hardware, Software, and more!    Check it out!
  • Fill out your device list and let everyone know which phones you have!    Edit Your Device Inventory

[GUIDE] YT9213AJ, YT9216B, YT9216BJ, YT9217B - Enhanced Custom Firmware - ROOT - Viper4Android - TWRP - Brick Recovery - Custom UI and more

Search This thread

iceblue1980

Senior Member
Aug 14, 2020
233
63
41
London
extrememod.co.uk
Hi all,

Wanted to share these MODs with you that I created for 8227L_demo Android Head unit, model: YT9213AJ, YT9216B AND YT9217B with 1Gb RAM and 16Gb FLASH drive. You can use this to debrick your unit or to fully install the 2020 software with fully working:

YT9213AJ_00011_V001_20200806
YT9216B_00002_V004_20200610 (with split screen mod) - also works on YT9217B

YT9213AJ_00011_V001_20200421.png YT9216B_00002_V004_20200610.png. IMG_20210513_234136.png


ROOT (SuperSU)
TWRP Recovery
Viper4Android / Viper4A / ViperFX
Scatter file (should work for any 8227L YT921xx device)
Full Memory Dump


EQ.png. split screen.png

!! ALWAYS BACKUP YOUR UNIT BEFORE MAKING ANY CHANGES TO IT!!


ad pic.png

Download link

How to use

  1. Download the file and unzip it onto you PC hard drive
  2. Make sure Mediatek drivers are correctly installed on your PC (view this guide here on XDA on how to properly install them)
  3. Download FlashTool version 5.1824 (or you will get transfer errors with reading DRAM or Scatter file) - if this version gives you errors, try other versions between v5.1736 and v5.1916
  4. In Flash Tool, 'write to memory' both BOOT1 and ROM_USER file if your unit is bricked or just ROM_USER if your unit works fine. You will need USB-A cable for this. You can download this step-by-step guide that I made (with pictures). During this step make sure your head unit is completely disconnected from car battery or any other power source
  5. When installation is complete (import can take roughly 20 min), restart the unit in TWRP Recovery mode (use the Shutdown app that came pre-installed with the mod) and in TWRP pick "Wipe Cache / Dalvik".
  6. Done!

If you are doing brick recovery, you can follow the very same method with Test Point method also fully described here on XDA Forums.

** IF YOU ARE UNABLE TO RESTORE YOUR UNIT, PLEASE CONSIDER DONATING IT TO ME, SO I CAN BUILD MORE MODS AND TUTORIALS


Here is a video I made on a bespoke project and also shows the modified software features

UPDATE Dec 2020

It has come to my attention that some of you struggle with getting TWRP, ROOT, and ViperFX to work. To remedy this, I have included all the files and instructions in one file together with the memory dump. It is a very easy install process. These steps assume that you have managed to install the memory dump, to begin with. Please follow the instructions to the letter.

---------------------------------------------------------

UPDATE Apr 2021

- NEW video link

- MORE pictures

- All-In-One file download (memory dump, root, TWRP, Viper etc plus all the tools and guides on how to install them)

- Added YT9216B mod and tools

---------------------------------------------------------

UPDATE Jun 2021

- YT9216B mods and files now work with YT9217B as well

---------------------------------------------------------

UPDATE Jul 2021

- Added YT9216BJ guide here

---------------------------------------------------------

Thanks! And if this post is helpful to you please don't forget to "like" it.


[9213AJ][YT9213AJ][V4A][VIPER4ANDROID][ViperFX][ROOT][TWRP][8227L][YT9216B]
 
Last edited:

K4f

Member
Apr 17, 2011
7
0
Hi,
Could you show us some screenshot / pictures how this Android look like?

How look the radio app?
Google maps run smoothly?
 

[email protected]

Senior Member
Nov 28, 2015
62
4
I have YT9213AJ car stereo 2 gb and 16 gb memory but it lost Google account and some app delete auto and Google account not support . When I formated / reset it again Google account working well but after update it also delet my google acoount and play store also delete what should I do now?
 

gorgutron

Member
Jun 24, 2014
5
0
Sorry if this is off topic.
I have this same unit(purchased a week ago) and the music quality is very bad, very flat, system equalizer doesn't work, Volume 1 is too loud.
I have used viper before on phones connected to head units with great success. After viper is this unit now providing clear sound and bass? My setup is using factory amp.
I am still in my return window and wanted an opinion before rooting or sending it back.
 

codecxbox

Senior Member
Jan 29, 2011
155
32
How did you?

How did you install TWRP and Viper? my hu is 2/16..I tried to memory dump your rom but it say invalid lenght..
[
QUOTE=iceblue1980;83842081]Hi all,

Wanted to share this MOD with you that I created for 8227L_demo Android Head unit, model: YT9213AJ with 1Gb RAM and 16Gb FLASH drive. You can use this to debrick your unit or to fully install the latest firmware (Aug2020) with fully working:

YT9213AJ_00011_V001_20200806

ROOT (SuperSU)
TWRP Recovery
Viper4Android / Viper4A / ViperFX
Scatter file (should work for any 8227L YT921xx device)
Full Memory Dump

Download link

How to use
  1. Download the file and unzip it onto you PC hard drive
  2. Make sure Mediatek drivers are correctly installed on your PC (you can view many guides here on XDA on how to properly install them)
  3. Download FlashTool version 5.1824 (or you will get transfer errors with reading DRAM or Scatter file) - if this version doesn't work try other versions between v5.1736 and v5.1916
  4. In Flash Tool, 'write to memory' both BOOT1 and ROM_USER file (search for instructions on XDA on ow to import memory dump) using the information from "Memory Map.txt" file (shows what memory values to type in when importing in the Flash Tool) and you will need USB-A cable for this. During this step make sure your head unit is completely disconnected from car battery or any other power source
  5. When installation is complete (import can take roughly 20 min), restart the unit in TWRP Recovery mode (use the Shutdown app that came pre-installed with the mod) and in TWRP pick "Wipe Cache / Dalvik".
  6. Done!

If you are doing brick recovery, you can follow the very same method with Test Point method also fully described here on XDA Forums.

Enjoy!


[9213AJ][YT9213AJ][V4A][VIPER4ANDROID][ViperFX][ROOT][TWRP][8227L][/QUOTE]
 
  • Like
Reactions: reystos

kamikazedc

Senior Member
Apr 25, 2011
90
56
Madrid
Can this work on 2Gb RAM / 32Gb ROM?

Hi all,

Wanted to share this MOD with you that I created for 8227L_demo Android Head unit, model: YT9213AJ with 1Gb RAM and 16Gb FLASH drive. You can use this to debrick your unit or to fully install the latest firmware (Aug2020) with fully working:
...


Hello!
I have a YT9213A (without last "J"), with 2Gb RAM and 32Gb ROM, and I wish to root it in order to change the radio app with a mod made by a 4pda member.

Can I root it without reflashing the entire firmware?

If not, will yours be compatible with my unit?

EDIT: PS: The download link is not working for me, please fix it.

Thanks in advance.
 
Last edited:

iceblue1980

Senior Member
Aug 14, 2020
233
63
41
London
extrememod.co.uk
Hello!
I have a YT9213A (without last "J"), with 2Gb RAM and 32Gb ROM, and I wish to root it in order to change the radio app with a mod made by a 4pda member.

Can I root it without reflashing the entire firmware?

If not, will yours be compatible with my unit?

EDIT: PS: The download link is not working for me, please fix it.

Thanks in advance.

Sorry I wouldn't recommend it.
 

iceblue1980

Senior Member
Aug 14, 2020
233
63
41
London
extrememod.co.uk
Hello!
I have a YT9213A (without last "J"), with 2Gb RAM and 32Gb ROM, and I wish to root it in order to change the radio app with a mod made by a 4pda member.

Can I root it without reflashing the entire firmware?

If not, will yours be compatible with my unit?

EDIT: PS: The download link is not working for me, please fix it.

Thanks in advance.

Hi,
Could you show us some screenshot / pictures how this Android look like?

How look the radio app?
Google maps run smoothly?

It's super fast. With this mod you can easily install custom radio app or use one included. Here is a video I made showcasing similar unit but with exactly the same software -
 
Last edited:

iceblue1980

Senior Member
Aug 14, 2020
233
63
41
London
extrememod.co.uk
Sorry if this is off topic.
I have this same unit(purchased a week ago) and the music quality is very bad, very flat, system equalizer doesn't work, Volume 1 is too loud.
I have used viper before on phones connected to head units with great success. After viper is this unit now providing clear sound and bass? My setup is using factory amp.
I am still in my return window and wanted an opinion before rooting or sending it back.

Viper will improve the sound considerably however the main reason for poor sound quality in this unit is the built in amplifier chip which is YD7388 and is absolute crap. If you have basic soldering skills, replace it with TDA7850 and a 10000 UF 25V capacitor and together with Viper, your unit will sound like a very hi end head unit.
 
  • Like
Reactions: LUNA-TRANS

iceblue1980

Senior Member
Aug 14, 2020
233
63
41
London
extrememod.co.uk
How did you install TWRP and Viper? my hu is 2/16..I tried to memory dump your rom but it say invalid lenght..
[
QUOTE=iceblue1980;83842081]Hi all,

Wanted to share this MOD with you that I created for 8227L_demo Android Head unit, model: YT9213AJ with 1Gb RAM and 16Gb FLASH drive. You can use this to debrick your unit or to fully install the latest firmware (Aug2020) with fully working:

YT9213AJ_00011_V001_20200806

ROOT (SuperSU)
TWRP Recovery
Viper4Android / Viper4A / ViperFX
Scatter file (should work for any 8227L YT921xx device)
Full Memory Dump

Download link

How to use
  1. Download the file and unzip it onto you PC hard drive
  2. Make sure Mediatek drivers are correctly installed on your PC (you can view many guides here on XDA on how to properly install them)
  3. Download FlashTool version 5.1824 (or you will get transfer errors with reading DRAM or Scatter file) - if this version doesn't work try other versions between v5.1736 and v5.1916
  4. In Flash Tool, 'write to memory' both BOOT1 and ROM_USER file (search for instructions on XDA on ow to import memory dump) using the information from "Memory Map.txt" file (shows what memory values to type in when importing in the Flash Tool) and you will need USB-A cable for this. During this step make sure your head unit is completely disconnected from car battery or any other power source
  5. When installation is complete (import can take roughly 20 min), restart the unit in TWRP Recovery mode (use the Shutdown app that came pre-installed with the mod) and in TWRP pick "Wipe Cache / Dalvik".
  6. Done!

If you are doing brick recovery, you can follow the very same method with Test Point method also fully described here on XDA Forums.

Enjoy!


[9213AJ][YT9213AJ][V4A][VIPER4ANDROID][ViperFX][ROOT][TWRP][8227L]
[/QUOTE]

Will not work with your unit. Sorry
 

amritpal2489

Senior Member
Oct 3, 2010
306
48

Top Liked Posts

  • There are no posts matching your filters.
  • 1
    @iceblue1980 is this applicable to MTK8127 APL8227L system? This is Chinese AHU but branded with blaupunkt.

    I have the dat file, scatter and other system files unpacker, but cant go frm there. Need your assistance to move to your rom.

    Device:
    Android 10.1” Digital Capacitive TFT touch with 2.5G IPS screen Car Multimedia audio system with PhoneLINK, Navi Ready (via mSD card, 2GB DDR3 Memory with 16GB flash storage, Wi- Fi ready, 2 USB , Full HD (1080p) video playback via USB, Rear View camera input, Bluetooth – Phone Book & Audio streaming, Video Out, Intuitive GUI, 10 band EQ, 24 bit DA converter 192 kHz, High power 4 x 50 watts output. FLAC File compatible.

    spec:

    System MCU snap https://forum.xda-developers.com/attachments/20210713_155512-jpg.5360949/

    Sorry I wouldn't try it. Your unit is completely different.
    1
    thanks for the revert. its still says 8227L demo in the settings. in scatter file its mentioned as mtk8127.... any other ideas that i can try ?

    Am stuck with slow OS by the supplier. Wish i researched XDA b4 buying blaupunkt.

    You're welcome and be happy you didn't buy Blaupunkt as it's not real Android but Android Auto. Android Auto is a light version of true Android and only supports a few select apps. For example, you can't use internet browsers on Android Auto so you can't do things like listening to Internet Radio. Also you can't get any cool features or UI customizations. Stay away from Android Auto unless you want spend lots of money for very little value.

    You device might have the same Mediatek chip but everything else is probably different. In order for my mods to work you need to have the correct hardware. As an example, your MCU chip has to be STM32F030C8T6. I don't think it is, looking at the specs on the screenshots you shared.

    There are many options out there but frankly none of them will be good enough, regardless of their price. All Android car stereos are made in China and use worst components ever because they're cheap to manufacture. The only way to make this units great is to modify them and not just software but hardware as well.

    I do this for charity as a hobby of mine but I cannot advertise any services here. I'm happy to help out but check out the video in my signature as it provides more information and shows what this unit can be like.
    1
    Yeah I had another look and found it online, but for some reason not on the Blaupunkt.com but only the Indian site. you could open it up and take high resolution pictures of the motherboard (both sides) and share them?
    I will try to send you pictures this weekend.
    1
    Hello, mate.
    I have this android radio car unit here. See picture bellow.

    I have a doubt, whether I could install your "android 9.1 mod" over my android radio unit.

    Could you help me?

    Actually it should work just fine. Just make sure to backup your unit first.
    1
    Thank you. But I read a little bit and do not understood very well procedure. Do you have some video that clearly shows how to do that? Does it need soldering or only piece of wire?
    No soldering is required. What you need to do is:

    1. Shut down your head unit and remove all the cables.

    2. Insert an A-USB cable into your head unit, the 4 pin port.

    3. Open the Device Manager on your Windows computer.

    4. Short the 2 points as shown on the head unit's motherboard as shown in the picture with something like tweezers and then while holding down the tweezer on those 2 points, insert the usb cable into your computer.

    5. If you have installed the drivers correctly, a Mediatek device will pop up in your device manager.

    6. Use FlashTool to recover the unit. You will need to do test point again to upload the bootloader but after you should be fine to proceed with the restoration as normal.
    Let us know how it goes. Also use the link in the OP for detailed info on how to restore your head unit by Test Point method.
    Thank you. But I read a little bit and do not understood very well procedure. Do you have some video that clearly shows how to do that? Does it need soldering or only piece of wire?
  • 15
    Hi all,

    Wanted to share these MODs with you that I created for 8227L_demo Android Head unit, model: YT9213AJ, YT9216B AND YT9217B with 1Gb RAM and 16Gb FLASH drive. You can use this to debrick your unit or to fully install the 2020 software with fully working:

    YT9213AJ_00011_V001_20200806
    YT9216B_00002_V004_20200610 (with split screen mod) - also works on YT9217B

    YT9213AJ_00011_V001_20200421.png YT9216B_00002_V004_20200610.png. IMG_20210513_234136.png


    ROOT (SuperSU)
    TWRP Recovery
    Viper4Android / Viper4A / ViperFX
    Scatter file (should work for any 8227L YT921xx device)
    Full Memory Dump


    EQ.png. split screen.png

    !! ALWAYS BACKUP YOUR UNIT BEFORE MAKING ANY CHANGES TO IT!!


    ad pic.png

    Download link

    How to use

    1. Download the file and unzip it onto you PC hard drive
    2. Make sure Mediatek drivers are correctly installed on your PC (view this guide here on XDA on how to properly install them)
    3. Download FlashTool version 5.1824 (or you will get transfer errors with reading DRAM or Scatter file) - if this version gives you errors, try other versions between v5.1736 and v5.1916
    4. In Flash Tool, 'write to memory' both BOOT1 and ROM_USER file if your unit is bricked or just ROM_USER if your unit works fine. You will need USB-A cable for this. You can download this step-by-step guide that I made (with pictures). During this step make sure your head unit is completely disconnected from car battery or any other power source
    5. When installation is complete (import can take roughly 20 min), restart the unit in TWRP Recovery mode (use the Shutdown app that came pre-installed with the mod) and in TWRP pick "Wipe Cache / Dalvik".
    6. Done!

    If you are doing brick recovery, you can follow the very same method with Test Point method also fully described here on XDA Forums.

    ** IF YOU ARE UNABLE TO RESTORE YOUR UNIT, PLEASE CONSIDER DONATING IT TO ME, SO I CAN BUILD MORE MODS AND TUTORIALS


    Here is a video I made on a bespoke project and also shows the modified software features

    UPDATE Dec 2020

    It has come to my attention that some of you struggle with getting TWRP, ROOT, and ViperFX to work. To remedy this, I have included all the files and instructions in one file together with the memory dump. It is a very easy install process. These steps assume that you have managed to install the memory dump, to begin with. Please follow the instructions to the letter.

    ---------------------------------------------------------

    UPDATE Apr 2021

    - NEW video link

    - MORE pictures

    - All-In-One file download (memory dump, root, TWRP, Viper etc plus all the tools and guides on how to install them)

    - Added YT9216B mod and tools

    ---------------------------------------------------------

    UPDATE Jun 2021

    - YT9216B mods and files now work with YT9217B as well

    ---------------------------------------------------------

    UPDATE Jul 2021

    - Added YT9216BJ guide here

    ---------------------------------------------------------

    Thanks! And if this post is helpful to you please don't forget to "like" it.


    [9213AJ][YT9213AJ][V4A][VIPER4ANDROID][ViperFX][ROOT][TWRP][8227L][YT9216B]
    2
    Your mod got me thinking could I do it with the later firmware, it was a mission but it's done, Latest API 27 v6.5 true android 8.1 with working ViPERFX instructions and download here https://forum.xda-developers.com/t/...d-8-1-2020-root-and-viper4android-fx.4205037/
    2
    Thank you for your feedback guys. Unfortunately I don't have this unit so I cannot test the memory dump but last time I imported it, everything worked. There might be a number of reasons for the issues you are experiencing and so I've added TWRP, ViperFx, custom Boot Logo and Custom Interface files to the original post so you can manually install them. The good thing is, is that it is super easy and all of these files are optimized for YT9213AJ.
    2
    UPDATE 13 Apr 2021

    - NEW video link

    - MORE pictures

    - All-In-One file download (memory dump, root, TWRP, Viper etcplus all the tools and guides on how to install them)

    - Added YT9216B mod and tools

    - View the original post for more info

    ---------------------------------

    Currently working on YT9217B model as well but that'll take a few weeks. Stay tuned
    2
    I have used two days trying to get this working. I guess you need to press ctrl+alt+v in SP flash (advanced mode) for the write memory option. But I can not figure out how to apply hex size from the memory map txt file included in the download. Presumably the memorymap contains the size of the partitions, but SP Flash write mode ask for begin address...?
    Im also wondering why recovery partition does not seem to be included. Is TWRP not installed in the recovery partition?
    Included scatterfile from MT3367 ?

    No worries, I have updated the original post with a full guide on how to import this memory dump. Check it out.