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

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RandCat

Senior Member
Oct 1, 2021
55
0
Do you see the same step in the TWRP guide you downloaded?
No it looks like this
1635088549578.png
 

RandCat

Senior Member
Oct 1, 2021
55
0
I am on the radio step 3 now and after installing the zip I seem to be stuck in the android boot logo screen. I wiped cache after installing and booted to system.

Edit: I keep speaking too soon. There's a 2 min ish wait.
 

RandCat

Senior Member
Oct 1, 2021
55
0
New problem: The app was laggy so when I tried opening Magisk, it was slow so I pressed on update app button instead. Now the Magisk app is gone.. I know it says to never press it EVER, well it was an accident. What now?

Edit: So for a minute the Magisk app removed itself from the app drawer but I could still go into it via Settings > Apps and Notifications. I rebooted and it came back.

Edit 2: I ran the uninstall zip again and redid it, but had to install the magisk apk this time (last time I didnt, it was just there). Seemed to do the trick. Root is working.
 
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RandCat

Senior Member
Oct 1, 2021
55
0
It also prompted me to grant superuser rights to 3C all in one app after opening the app drawer, but I accidentally clicked deny and now it's periodically showing "denied" messages. Was this another accident I need to undo?

Edit: I got around this by going into Magisk settings and allowing grant.
 
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RandCat

Senior Member
Oct 1, 2021
55
0
I'm now at the step where it says to run C:\ADB\install-en.bat as administrator, but it gives me this.

cmd_jljoi1trM0.jpg
 

RandCat

Senior Member
Oct 1, 2021
55
0
I believe I figured out how to complete the rest of the guide. New boot animation and launcher are installed. It seems there was an issue with the driver path in the install-en.bat file. Modified to pnputil -i -a "C:\ADB\driver\android_winusb.inf"

I do now have questions. First off is TWRP wants me to auto update, says it's required, do you recommend?
 

RandCat

Senior Member
Oct 1, 2021
55
0
Is there any reason I shouldn't go with Car Launcher Pro? I found another launcher that I prefer the look of without such great effort to setup to get there, called AGAMA Car Launcher. Does the package you included work with features specific to this head unit or something?
 

ExtremeMOD

Senior Member
Aug 14, 2020
737
175
41
London
extrememod.co.uk
Is there any reason I shouldn't go with Car Launcher Pro? I found another launcher that I prefer the look of without such great effort to setup to get there, called AGAMA Car Launcher. Does the package you included work with features specific to this head unit or something?

You can install any launcher.

After lots of testing, we picked Car Launcher Pro as our preferred car launcher delivered with ExtremeMOD head units. It delivers best performance and visual options at the same time.

The SuperMOD software package contains everything we use on our head units as everything has been meticulously tested.

We can't speak to any alterations made on the default setup.
 
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abanoub_scorpius

New member
Oct 17, 2013
3
0
Hi all i need your help cauz my unit is bricked and its in bootloop at android logo then recovery with api 3 and erasing then reboots again with android logo i managed to enter meta mode by testing points but i dont have any backup or stock rom i attached my info screen so please help me as each preloader i try to flash i get error 4034 or 5054
IMG_20211002_182200.jpg
 

ExtremeMOD

Senior Member
Aug 14, 2020
737
175
41
London
extrememod.co.uk
Hi all i need your help cauz my unit is bricked and its in bootloop at android logo then recovery with api 3 and erasing then reboots again with android logo i managed to enter meta mode by testing points but i dont have any backup or stock rom i attached my info screen so please help me as each preloader i try to flash i get error 4034 or 5054 View attachment 5441451

This thread does not cover your head unit. Please start a new thread.
 

RandCat

Senior Member
Oct 1, 2021
55
0
Do you suggest updating TWRP? I have a persistent notification that comes up on every reboot about updating TWRP.
 

fabbond007

New member
Nov 2, 2021
1
0
Hello i have a yt9216bj , i would like to change the firmware is it possible ?

Thanks in advance
 

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dragosab

Member
Nov 8, 2021
8
0
Hello,

Is it possible to use this firmware for my unit? I am not sure what type it is, ,because System Info indicates YT9216BF, while CPU-Z indicates YT9218.

Thank you!
 

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  • 1
    Thanks. And those are original files you extracted from your backup, correct?
    Yes, extracted from original boot1 and rom_user files, correct.
    1
    Sorry, i missed i use this "YT9216BF_6.2v3.5_02.05.2021"

    Okay, in this case:

    1. Restore your backup

    2. Flash the firmware again but without the boot.img file (so only Android/System and Vendor)

    3. If 2GB TWRP file doesn't work, try the 1GB one.
    1
    Okay, in this case:

    1. Restore your backup

    2. Flash the firmware again but without the boot.img file (so only Android/System and Vendor)

    3. If 2GB TWRP file doesn't work, try the 1GB one.
    Finished!!! Thank you Very Much.

    i Flashed Android/System and Vendor only. But TWRP 2 GB Not work, Worked with 1GB
    1
    Hi all

    Got a weird issue with my YT9216BJ stereo that I am hoping this mod will resolve.

    The stereo randomly powers on and drains my battery and I don't understand why. The built in launcher is poor but I've installed my purchased version of Agama from a previous Android Head Unit and it works much better.

    I have attached pictures of the stereo settings pages to see if this update is compatible or not

    Thanks

    Your head unit is compatible with this mod. It will not solve your particular issue however. In order to solve it, you need to rewire it in your car. Simply put, connect your B+ and ACC cable to the ACC input in your car. This way your stereo will only power on when you start the car. With this mod, the startup time will go down considerably as well. Enjoy!
    1
    Thanks for the reply. I used the wiring harnesses that came with it and attached it to my existing cradle. I'm guessing then that the wiring harness needs modifying to fix the problem?

    I'll probably wait until weekend to have a look at that properly then

    Yes but all you need to do is to remove the B+ cable where it connects to the car socket and then twist it together with the ACC one.
  • 13
    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
    • Customization options
    20210805112900.jpg

    • ON PHYSICAL BUTTONS: this software has only been tested on head units with no physical buttons (like volume) | Before making any changes, access the CAR SETTINGS -> FACTORY SETTINGS -> ENCODER SETTINGS on your head unit and take a screenshot of the current settings (see example below). After installing the package, go back to these settings and adjust them if needed. If that doesn't help and if you can't successfully re-calibrate the buttons after installing the firmware, restore your backup

      encoder settings.png

    Disclaimer
    I do not create the software itself but rather use research and put together different mods and hacks into one package that includes very user-friendly step-by-step instructions on how to install it all. You will find the links to original posts in the instructions pdf's if credit is due. The software might include smaller changes made by me and has been fully tested in real units.

    This guide works on the following 1Gb RAM and 2 Gb RAM units with fake Android 10 and Android 11 installed:

    - YT9216BF | YT9216CFJ | YT9216BJ | YT9216BFJ | YT9216CJ

    !! TAKE A PICTURE OF YOUR SYSTEM INFO AND KERNEL VERSION BEFORE DOING ANYTHING TO YOUR HEAD UNIT !!


    Screenshot_20181015-082542.png 20210805092140.jpg

    The zip file package contains:
    • Modified firmware - courtesy of Stranger21UFA @ 4PDA (link to the original post)
    • TWRP (separate folders for 1GB and 2GB RAM units)
    • Root via Magisk
    • Viper4Android
    • Car Launcher
    • Boot Animation
    • SEPARATE INSTRUCTIONS ARE INCLUDED IN EVERY FOLDER

    >>>> ALWAYS BACKUP YOUR UNIT BEFORE MAKING ANY CHANGES TO IT <<<<

    !! IMPORTANT !!

    This is a fairly advanced installation process and will require you to follow the individual guides included in the software package - to the letter. Failing to do so, will (in "best" case) result in a slow and buggy head unit and in the worse case - brick it altogether.​


    DOWNLOAD #5
    YT9216BF * YT9216CFJ * YT9216BJ * YT9216BFJ * YT9216CJ - supermod software package & drivers

    STEP-BY-STEP GUIDE (upgrading from working stock firmware):
    1. DO NOT SKIP ANY STEPS, AND INSTALL EVERYTHING IN THE CORRECT ORDER. STEPS 5 AND 6 ARE MOST CRITICAL.

    2. Proceed to download the software package for your unit and the drivers package in the same folder

    3. It's highly recommended to do these upgrades with your unit connected on your desktop, rather than in the car. Video Guide

    4. Install the Mediatek & ADB drivers on your Windows computer. Video Guide - use the same principle for ADB drivers.

    5. Backup your current system by exporting a full memory dump. Video Guide

    6. Import back your memory dump from step-5 to ensure it fully works. This is how.

    7. Install the package. Separate instructions are included in every folder of the downloaded zip file. Follow them by the order.

    IF THIS SOFTWARE PACKAGE HAS BRICKED YOUR HEAD UNIT AND YOU HAVE YOUR BACKUP AVAILABLE, follow the steps below:
    1. DO NOT SKIP ANY STEPS, AND INSTALL EVERYTHING IN THE CORRECT ORDER.

    2. It's highly recommended to do these upgrades with your unit connected on your desktop, rather than in the car. Video Guide

    3. Install the Mediatek & ADB drivers on your Windows computer. Video Guide - use the same principle for ADB drivers - (download link is in the video description)

    4. Watch this video on Test Point recovery

    5. Import back your memory dump. This is how.

    6. If successful - try to install the software package again or stay with your original one

    IF THIS SOFTWARE PACKAGE HAS BRICKED YOUR HEAD UNIT AND YOU HAVE NO BACKUP AVAILABLE, follow the steps below:
    1. Share the pictures of your System Info and Kernel in this thread and I'll try to help you

    20210805091905.jpg 20210805091639.jpg 20210805112820.jpg 20210805091836.jpg

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

    This post is being frequently updated and you'll find more guides and mods in my signature​

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

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

    Enjoy!​


    [V4A][VIPER4ANDROID][ViperFX][ROOT][TWRP][8227L][YT9216BF] [YT9216CFJ] [YT9216BJ] [YT9216BFJ] [YT9216CJ]
    4
    Below post is to show my respect & appreciation to iceblue1980 and in addition to share my experience that had for a few days while trying to make my unit better with above firmware.

    As I downloaded firmware package, I chose not to follow his guide by letter & skip a few steps, for example & most important, not to take full back up of memory.
    Then disaster followed, as I almost bricked the unit.
    So I turned back to post/s to find solutions. Iceblue1980 was there, day & night responding to me & sending me several alternatives to try.
    He even volunteered to fix my unit by sending it to him without any money even if he had to spend valuable time for it.
    Finally, after several attempts & lots of files / firmwares / guides he sent me the gold package & we made it work !!!

    I carefully followed his last guide by letter & that was it.

    Now my unit is back to life & even better than ever.

    This guy is awesome & I personally thank him so much.

    To all members, PLS FOLLOW author's
    guides BY LETTER EVERYTIME to avoid surprises !!!!
    AND
    Don't forget to thank the people who are there for you day or night.
    They use lot of their personal time to be there for you & that is priceless !!

    :) :) :) :)
    2
    The links go to a '404' page.
    I did the first step as per the guide then did a factory reset. I then installed TWRP and rebooted then unit. Then I ran the 'reboot recovery' command in the terminal emulator and the unit rebooted, but it only shows the logo, some vertical lines on the bottom half of the screen, then a black screen and hangs there.

    I can still reboot normally and the unit will run.

    Separately, when resuming audio tracks after key-off, the audio is very choppy and unusable. Both bluetooth audio and the music app behave the same.

    To recover, I have to reset the unit and then the audio is ok.

    Also there's a very loud audio boom on start up and shutdown of the unit. This is not there in the stock firmware.View attachment 5409085

    Thank you for sharing these details. I'm afraid your head unit is not compatible with any of my software packages. If you haven't done so already, please revert back to factory firmware to avoid issues.
    2
    The method I had to use slightly differs from everything I have read.

    1.) I wired a toggle switch to my positive lead. Left it in the off position (no power to head unit)

    You could share a picture of your soldered button. Some folks here might find it helpful :)

    I'm thinking of making a guide going for a permanent mod, where the soldered tactile SMD button will be accessible through a small hole in the back of the head unit (similar to how you access the RESET button). That way you can use a 'needle' to short the test points, rather than picking the unit apart every time.
    2
    View attachment 5405715my board is this where is the recovery pin ? And where I conect an antenna for wifi

    These are the recovery test points:

    IMG-20210909-WA0006.jpeg

    The Wifi/BT antenna mod is shown here, however I plan to post a proper guide on this particular mod in the future.