[ROM] [ROOT] [TWRP] [GUIDE] YT9216B Chinese Android Head Unit

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Hidden Username

Senior Member
Dec 25, 2012
739
153
Hi there,

I have the same unit and firmware is YT9216B_00002_V004_20190728

Does Viper4Android really make a big difference? I have the stock audio system no sub.

My unit is one that comes with the air conditioning, etc built into the head unit. See attached pic below, does it support those buttons as well? Thanks.

y1TJCSJ.jpg
 

Panja83

Senior Member
Aug 28, 2008
57
9
Thank's I will try it!!:)

---------- Post added at 04:18 PM ---------- Previous post was at 04:13 PM ----------



Sory my a neophyte can you tell me step by step how to do that!!!:confused: That my first radio headunit i buy for my Hyundai Elantra GL 2013!

First :
Make a Full Backup/Memory Dump:
Install latest MTK Drivers in your computer.
Open SPFlashtool, Select Memory Test Tab, Select only RAM Test (uncheck the rest), push start, and connect the unit disconnected from car. 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.

Then :
Uploading Firmware (full or parts) via spflashtool:
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!


Source: https://forum.xda-developers.com/an...-firmware-chinese-7-head-unit-ac8227-t3931863
 

Hidden Username

Senior Member
Dec 25, 2012
739
153
Hi there,

I have the same unit and firmware is YT9216B_00002_V004_20190728

Does Viper4Android really make a big difference? I have the stock audio system no sub.

My unit is one that comes with the air conditioning, etc built into the head unit. See attached pic below, does it support those buttons as well? Thanks.

y1TJCSJ.jpg

Would someone be able to help please? Thank you
 

h_arabi

Member
Apr 29, 2015
11
0
Instructions

Prepare:
- download and unzip archive from my first post
- make/buy USB A male to A male cable (for photos see attachments)
- install drivers from SP_Driver folder

Backup:
Just in case make backup (readback in ATC Flash Tool)
I didnt done it, so if u want, search for guide online

Flashing process:
- open flash_tool.exe from ATC_Flash_Tool folder
- select Download-Agent MTK_AllInOne_DA.bin from ATC_Flash_Tool folder
- select Scatter-loading File AC8227L_Android_scatter.txt from Firmware folder
- make sure PRELOADER is not checked. (There isnt any in in my fw. Just in case if u use this guide for some another fw)
- press Download button
- connect your USB A to A cable one side to PC, another one to your head unit. I recommend u to use that 4 pin usb port (that one with smaller plastic end), but shouldnt matter.
- press RST button on your head unit (use some pin, paper clip or toothpick)
-wait until flashing process ends. There should appear green message.
- press RST button again and let yout headunit boot.
- perform factory reset on your head unit to prevent any bugs

Flashing process error:
- happends sometimes
- disconnect your cable
- if possible, disconnect your head unit from electricity for a while
- press download again, connect usb cable back, and press RST button.
- check if your cable is not faulty.
- for homemade cable try to apply some solder on cable ends, check if ends arent shorted, use tape on them, or buy original cable

How can I disable Boot Ford and not have any Boots enabled? thanks
 
Last edited:

Jirinoo

Member
Mar 16, 2020
7
1
Boot

Will it work on this unit?

Android: YT9216BF 00002 VO04 20190911
Android OS: Android 8.1 Go
XY AUTO: 3.1 (822)
CAN BUS: 3.0 (8227L)
DDR: 2G FLASH: 32G
cpu: A7 1.3g Hz 4x
Display: 1024x600
MCU: 3.1 (8227L)

?
 

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Shreyas17

Senior Member
Sep 25, 2017
88
22
22
@Shreyas17 there is no OTA update on our devices. Not now, not ever. Check out 4pda for firmware.
i have checked that forum but confused which firmware to use i want to update the device using pendrive and also bit confused about the steps to update the device. attached the image if you could help me also want to keep device stock no root required for me.
 

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wooldogsinc

Senior Member
Jul 15, 2018
88
22
Installed my external microphone thanks to users on this forum. Soldered the pins on the motherboard and removed the old microphone. Works much better than the stock one.
 

knightdragonlight

New member
Apr 4, 2020
1
0
hi, my head unit is 2 GB RAM and 32GB ROM, is your firmware ok with mine? moreover, i see some can make notification of opening door on screen, can it be assemble in your firmware?
thanks so much!
 

pajurpl

Member
Oct 14, 2019
24
12
Did you resolve this issue I have the same situation please reply thanks


yes I returned to my original firmware because in my model yt9213 does not have the hardware components as yt9216 and therefore the equalizer from this firmware does not work
 

elvin9

Member
Apr 27, 2011
27
3
yes I returned to my original firmware because in my model yt9213 does not have the hardware components as yt9216 and therefore the equalizer from this firmware does not work

thanks for reply for sure I have the same situation which firmware did you upload for yt9213 please forward the link thanks

---------- Post added at 11:50 PM ---------- Previous post was at 11:46 PM ----------

thanks for reply for sure I have the same situation which firmware did you upload for yt9213 please forward the link thanks

I founded thanks any way for your help!!
 

hamoudy84

New member
Apr 4, 2020
4
0
8227l demo

Is it compatible with hu 8227l demo ?
info: alps full 8227l_demo 8.1 Go
Build ID MRA58K
hardware ac8227l
Total memory 1GB
Storage 16 GB
Cpu 4x arm cortex-A7 1.3GHz
Mcu 3.1
Android 6.0 yt9216b_00002_V004_20190811
Display 1024*600
 
Last edited:

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  • 1
    H
    Hello, I am trying to flash the rom on my device and I cannot do it, I have installed the drivers in multiple ways and when I try I always have this error, it does not recognize the USB or the micro SD card and to connect it to the Flashtool it has to be with the test point.
    Is the rom compatible with my device? Thanks
  • 20
    So... how to root your device?
    how to flash twrp?

    You can use this pre-rooted firmware, with included twrp.
    -Build type is userdebug, means u can enable multi-window mode in dev settings
    -Based on latest available firmware
    -Root
    -Busybox
    -TWRP
    -HIFI enabled
    -UI1 Launcher
    -FM Radio with RDS and save manager.
    -TPMS (working with cheap chineese usb units)
    -DVB-T & SDR (required RTL2832U)
    Its backup of system i already have modified for myself.
    It means, its branded to Ford Mustang all the way.
    U can do this to get rid of that branding:
    -choose another bootlogo.
    -flash new bootanimation.
    -install stock (not modified) UI1 launcher

    To get ADB, i recommend this app:
    WiFi ADB - Debug Over Air

    Download:
    YT9216B_00002_V004_20191012_HIFI_V3.zip

    Factory settings password: 8888

    Important note: Android 8.1 Go is just chineese marketing trick, in reality this head unit has android 6.0 (api lvl 23, not 27 as 8.1 should have).
    11
    Instructions

    Prepare:
    - download and unzip archive from my first post
    - make/buy USB A male to A male cable (for photos see attachments)
    - install drivers from SP_Driver folder

    Backup:
    Just in case make backup (readback in ATC Flash Tool)
    I didnt done it, so if u want, search for guide online

    Flashing process:
    - open flash_tool.exe from ATC_Flash_Tool folder
    - select Download-Agent MTK_AllInOne_DA.bin from ATC_Flash_Tool folder
    - select Scatter-loading File AC8227L_Android_scatter.txt from Firmware folder
    - make sure PRELOADER is not checked. (There isnt any in in my fw. Just in case if u use this guide for some another fw)
    - press Download button
    - connect your USB A to A cable one side to PC, another one to your head unit. I recommend u to use that 4 pin usb port (that one with smaller plastic end), but shouldnt matter.
    - press RST button on your head unit (use some pin, paper clip or toothpick)
    -wait until flashing process ends. There should appear green message.
    - press RST button again and let yout headunit boot.
    - perform factory reset on your head unit to prevent any bugs

    Flashing process error:
    - happends sometimes
    - disconnect your cable
    - if possible, disconnect your head unit from electricity for a while
    - press download again, connect usb cable back, and press RST button.
    - check if your cable is not faulty.
    - for homemade cable try to apply some solder on cable ends, check if ends arent shorted, use tape on them, or buy original cable
    2
    folowed V4A Rom Inclusion
    So, ViPER4Android included in ROM.
    credits to ViPER520
    ViPER’s Audio Website
    ViPER’s Audio XDA Thread
    Users, use “Compatible Mode” if you plan to install other sound mods. No other sound mods included in ROM.
    2
    I saw it on my unit with this rom! I am just uploading a clean one - stay tuned :p

    This one is slightly debloated, stock launcher, Android bootlogo, Android bootanimation

    : https://drive.google.com/open?id=1Tsfm16klrP4uBk5K8sXBvdqvHyL4df25

    ---------- Post added at 10:52 AM ---------- Previous post was at 10:49 AM ----------

    Anyone knows which cable adapter I need for TF-SD Card?

    20200125_153011_small.jpg
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