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Questions regarding a YT9217B Android Head unit XY Auto (8227L) YT9217B_00002_V004_20

I just bought a fairly cheap Chinese Head unit for my 2005 Accord. The hardware is not bad but the software has some issues. The manual is as always horrible and the seller has no info on Software Updates or a link to a Website that has them.
Does anyone have a link the stock Firmware just in case I decide to mess with the unit and mess thinks up? I am more afraid with loosing the Climate Controls and making the car dangerous to drive (no heat, AC etc) in bad weather conditions.
In addition is there a link where I can get the latest version or a better version of the App? If I flash a different firmware do I need to change the CAN parameters to match my Vehicle so that the Climate Control works properly?
The Specs are the following:
Android: YT9217B_00002_V004_20190815
Abdroid OS: Android 9.1
XY AUTO: 3.1 (8227L)
CAN BUS: 3.0 (8227L)
DDR: 2GB Flash: 32G
CPU: A& 1.3Ghz x 4
MCU: 3.1 (8227L)
In case I flash a non stock firmware do I have to reprogram all the Climate buttons of the unit?
Or maybe it would be better to root the unit and install CarWebGuru or Agama?
Thanks for the info
Mike

antiriad76 said:
I just bought a fairly cheap Chinese Head unit for my 2005 Accord. The hardware is not bad but the software has some issues. The manual is as always horrible and the seller has no info on Software Updates or a link to a Website that has them.
Does anyone have a link the stock Firmware just in case I decide to mess with the unit and mess thinks up? I am more afraid with loosing the Climate Controls and making the car dangerous to drive (no heat, AC etc) in bad weather conditions.
In addition is there a link where I can get the latest version or a better version of the App? If I flash a different firmware do I need to change the CAN parameters to match my Vehicle so that the Climate Control works properly?
The Specs are the following:
Android: YT9217B_00002_V004_20190815
Abdroid OS: Android 9.1
XY AUTO: 3.1 (8227L)
CAN BUS: 3.0 (8227L)
DDR: 2GB Flash: 32G
CPU: A& 1.3Ghz x 4
MCU: 3.1 (8227L)
In case I flash a non stock firmware do I have to reprogram all the Climate buttons of the unit?
Or maybe it would be better to root the unit and install CarWebGuru or Agama?
Thanks for the info
Mike
Click to expand...
Click to collapse
Give the search a try, seems there's info on: YT9217B

What is the best way to root this device? I basically want to upgrade the radio app and just use a 3rd party home app. I there a recommended method for OS 9?

Did you catch some progress? I have the same unit on the Passat car. All is working quite well - we need "simmple" root, but for this head unit and android 9.1 is not abvailable. We don´t need any big update. I´m looking for FM RDS unlock, more CANBUS aplication, contacts APK and music improvement - thats all.

you should check out this thread here.
https://forum.xda-developers.com/an...-firmware-chinese-7-head-unit-ac8227-t3931863

No brand headunit

Hello I have an unbranded headunit from eBay. I’ve already contacted the seller and tried my best to scour these threads but that hasn’t helped. I have no control of my subwoofer port on the back of there unit. The upgraded firmware that they show on the advertisement has an equalizer that includes sub, lo, mid, and hi but I have a 4 band with hz. I’m looking for the right firmware/mcu version
What my unit says now.
Android: YT9213A_00009_V001_20200312
Android os: 9.1 XY AUTO: 3.2 (8227L)
CAN Pro: 3.0 (8227L)
DDR: 2G FLASH:16G
Cpu: a7
Display: 1024x600
MCU: 3.1
What I’m looking for it to say
Android: YT_9217c_00005_V003_20181222 HIFI
Not important
Amplifier: ac7315 mos Bile duct 45wx4
Mcu: HW8227L 3.3- SWO-1.3
If that’s not possible I at least would like the most current update for this device or if I can flash another mcu firmware or software from a different device to it that would work too. I just want/need something better than what I’m working with now.
. Thanks in advance for any help.

Essgoo - 8227L - Sound balance & fader

Hello everyone.
I recently bought a android head unit.
I have additional speakers in rear and they are louder than the front ones. When i had older radio i could set it up by balance betwen front and back.
Now this option is missing in sound settings (i dont have that icon in top right corner).
My system info:
Android: haoling_00009_V001_20191128
OS: 9.1 XY Auto: 3.1 (8227L)
DDR: 1G Flash: 16G
CPU: A7 1.3GHz
MCU: 3.1 (8227L)
Can i downgrade or upgrade to get this option?
If yes, which firmware shloud i use?
Thanks in advance for your help

What does reseller suggest when contacted for support?

marchnz said:
What does reseller suggest when contacted for support?
Click to expand...
Click to collapse
I bought it from second hand, so I don't have contact to him.

Try to search in Settings the option of Sound and Balance. It's there.

Fader-Balance not working on 8227L_Demo Head unit

Hi guys,
I have a Chinese Android headunit with the 8227L_Demo chip and the fader-balance is not working. I have the option but when I move the dot around the car image, the sound still plays on all 4 speakers. Also, the EQ settings doesn't seems to change anything. The other bug I have is there a big gap/jump in the volume between 17 and 18 and the sound mute for half a second when I switch from 17 to 18 and vice versa.
Anyone experienced something like that ?

As I can't upload any image here I write all the info of my headunit.
Android: YT9213AJ_00011_V001_20200330
Android OS: 9.1
XY AUTO: 3.2 (8227L)
CAN PRO: 3.1 (8227L)
DDR: 1G
FLASH: 16G
CPU: A7 1.3Ghz x 4
Display: 1024*600
MCU: 3.1 (8227L)

me too, same problem. my unit is Blaupunkt key largo 970 but CPU-Z and some other in system hidden settings confirm that this unit is alps_ 8227L_Demo.
can you share your Equalizer.apk app?

plz help me i cant use sound fader , the sound too loud behind me and it disturbing mz

Hello Guys, I don't have any solution, but I have the same issue. Fader doesnt work. As far as I know, this is not because of the HU but the Harness. I have a JBL System and I had to buy an extra harness which doesnt allow me to use FADER.
My 2 cents.

Pablosky.cl said:
Hello Guys, I don't have any solution, but I have the same issue. Fader doesnt work. As far as I know, this is not because of the HU but the Harness. I have a JBL System and I had to buy an extra harness which doesnt allow me to use FADER.
My 2 cents.
Click to expand...
Click to collapse
can you show us picture please

I'm afraid guys, there is no solution. The reason it doesn't work is that your unit does not have a dedicated audio chip. Older units all had it, like YT9216, YT9217, YT9218, and even (older) YT9213AJ. If you buy Android 8.x or 9.x then the audio chip will be present.
See the pictures below explaining the issue.
The audio chip is TDA7729 (TDA7719 , CSC37033 , SCS37534).
Now there is a fix but it requires advanced soldering skills and a proper setup.
Sorry to be the bearer of bad news.

Help with Chinese android headunit

So I bought this head unit from Amazon specific for my 2009 Toyota Corolla. It has the fake android 10 but want to flash a working rom. Right now my head unit keeps closing apps and nothing works at this point. Even tried to reset it using the little pin hole on the front of the head unit but doesn’t do anything at all. Please help! All I need to know is which rom to flash to this head unit.
Specs of my head unit
Android: YT9216BF_00007_V004
Android OS: 10.1
XY Auto: 3.4 (8227L)
Can Pro: 3.1 (8227L)
DDR: 2G
Flash: 32G
CPU: A7 1.3GHz x 4
Radio: NXP6856
Display: 1024 x 600
MCU: 3.1 (8227L)

If it doesn't do anything when pushing reset you should return the head unit. The reset button is hardware related and has nothing to do with the firmware so I think there is a technical defect.
Buy a head unit you can find some information here on xda if you expect to get help from other users. Don't buy exotic unknown devices.

For Toyota Corolla Junsun V1 is available. No the best head unit but also not the worst. Or a PX6 could be a good choice.

I need help with Chinese Headunit using iPhone. I did factory reset and now nothing works. PLEASE HELP ME. I am not tech savvy on these units.