Database Users

[Q] 2DIN 'S07' Android 4.4 Using RK3066 - Root?

I recently bought a generic android head unit from Ali Express. It actually works well but I really need to connect it to a CAN bus and write some additional software (background: I want to replace the factory unit in a Nissan Leaf, so it needs to display some vehicle info, show the heater settings and set up the charge timer). I have experience in Android app development and embedded Linux, but I'm still a 'noob' when it comes to Android hacking (root access etc).
I'm pretty sure I will need root access to do what I want. It has 'CAN tx / rx' pins on the back, and I am pretty sure they are wired to one of the serial interfaces internally (I will need an adapter to convert UART to CAN as well). I played around with an app to access the serial ports (i.e. ttyxxx) but I didn't have permission to use many of them - probably the ones I wanted!
I don't want to re-write the existing music player, amp control and radio; I just want to add a new app to carry out my vehicle-specific functions.
I tried the root process given here but it didn't work.
Here are the device details:
Model: S07
MCU Version: MTCB-HA-V2.60
Android Version: 4.4.4_01062015
Kernel Version: 3.0.36+ [email protected] #278
CPU: ARM7 1.6G x 2
CPU/SOC is an RK3066 on a modular board. Pictures attached.
It doesn't have any physical buttons except reset - there are touch sensitive buttons for power, back and volume. It has one SD card slot for map data and no USB on the front (several on the back).
I haven't figured out how to get to the recovery console, or connect it to a PC via USB.
Any suggestions for how to root? Or get to recovery console?
Anyone else with a similar device?

Check out the Huefi thread above. It has everything you need. first page covers root. basically, download the rom you want, put it on the GPS SD card, insert it, and wait for it to ask you to update. Once you do that, it will be rooted. there is no other way to root it if it has 4.4.4. DO NOT INSTALL A MCU file for it unless it is for HA devices. HA is the manufacture of the unit, and if you use an MCU file for a different device, you run the risk of loosing the physical buttons on the unit. This can be repaired by going into recovery and flashing the HA MCU, but that is a lot of extra work

Hi! Thanks for your reply.
I was wary about installing a new image because I don't want to lose the existing radio app and amplifier controls (which are specific to the device rather than the RK3066 SOC module, if I have understood the structure correctly).
* Would a new image replace these apps, or are they actually in the MCU firmware anyway?
* Can I back up my current image first? I looked at some backup tools, but they all needed root access... =Catch 22.
Sorry for noob questions... I'm getting the hang of Linux but still new to messing with Android at a low level. I'd love to play around with a stripped Ubuntu or similar on the device, but I don't want to have to write my own software for the radio parts - at least not yet.
BTW do you know how the bootloader system works? Is it possible to boot from SD card or USB (therefore allowing some other OS to be booted without replacing the onboard image)?
MayfairDROID said:
Check out the Huefi thread above. It has everything you need. first page covers root. basically, download the rom you want, put it on the GPS SD card, insert it, and wait for it to ask you to update. Once you do that, it will be rooted. there is no other way to root it if it has 4.4.4. DO NOT INSTALL A MCU file for it unless it is for HA devices. HA is the manufacture of the unit, and if you use an MCU file for a different device, you run the risk of loosing the physical buttons on the unit. This can be repaired by going into recovery and flashing the HA MCU, but that is a lot of extra work
Click to expand...
Click to collapse

jcolebaker said:
Hi! Thanks for your reply.
I was wary about installing a new image because I don't want to lose the existing radio app and amplifier controls (which are specific to the device rather than the RK3066 SOC module, if I have understood the structure correctly).
* Would a new image replace these apps, or are they actually in the MCU firmware anyway?
* Can I back up my current image first? I looked at some backup tools, but they all needed root access... =Catch 22.
Sorry for noob questions... I'm getting the hang of Linux but still new to messing with Android at a low level. I'd love to play around with a stripped Ubuntu or similar on the device, but I don't want to have to write my own software for the radio parts - at least not yet.
BTW do you know how the bootloader system works? Is it possible to boot from SD card or USB (therefore allowing some other OS to be booted without replacing the onboard image)?
Click to expand...
Click to collapse
I cant help with the bootloader issues, but I can with some of the others:
-Radio and Amplifier apps are the same on all units, or should I say is compatible across all units. If you were to go into the settings, then factory settings and enter 126 as the password, you can see all the settings you need to make sure your unit functions after upgrading your rom image.
-You can not back up your factory image. its not possible. You can always reach out to your seller and ask them if they will send you a copy of the factory firmware.

MayfairDROID said:
I cant help with the bootloader issues, but I can with some of the others:
-Radio and Amplifier apps are the same on all units, or should I say is compatible across all units. If you were to go into the settings, then factory settings and enter 126 as the password, you can see all the settings you need to make sure your unit functions after upgrading your rom image.
-You can not back up your factory image. its not possible. You can always reach out to your seller and ask them if they will send you a copy of the factory firmware.
Click to expand...
Click to collapse
SUCCESS! I just downloaded and installed the latest image from Malaysk (I think?) and it looks like it is working well! Radio, music player and amplifier work, and I have root access. Woo! So far so good... Thanks!

Hello Friends, I read your post. Like anything happens
I want to update my Car Stereo Radio Head Unit
Here are the device details:
Model; S07
MTCB-JY-v2.44
MAR 24 2015 9:46:14
ANDROID VERSION 4.4.4_25032015
kernel version
3.0.36+
ROOT @ UBUNTU # 766
Build number
rk3066.eng4.4.4 25032015.13: 08: 43
CPU
arm7 1.6 GHz (x2)
But that is not the screen resolusion 880 // 1024
Knowing that I have to Huifei / KGL, Klyde, or RoadMaster
Thank

aribetty7811 said:
Hello Friends, I read your post. Like anything happens
I want to update my Car Stereo Radio Head Unit
Here are the device details:
Model; S07
MTCB-JY-v2.44
MAR 24 2015 9:46:14
ANDROID VERSION 4.4.4_25032015
kernel version
3.0.36+
ROOT @ UBUNTU # 766
Build number
rk3066.eng4.4.4 25032015.13: 08: 43
CPU
arm7 1.6 GHz (x2)
But that is not the screen resolusion 880 // 1024
Knowing that I have to Huifei / KGL, Klyde, or RoadMaster
Thank
Click to expand...
Click to collapse
Hi, I also didn't know the screen resolution, and it is not mentioned on the "About" screen.
In the settings menus, I found some options for recording a video of the display (I don't know why!) and the maximum resolution there was 1024 x 600. I figured that you wouldn't bother to record at higher res than the screen had, so the resolution must be 1024x600. This seemed to work!
My stereo has absolutely NO branding on it anywhere so I don't know whether it's a clone of Huifei or something else, but it worked with the "Malaysk" firmware, which I downloaded from the Huifie file repository (linked from here), under firmware->Malaysk ROM->Malaysk DualCore RK3066).
I picked the bottom one (12th Jun 15, 1024x600 with different launcher).

jcolebaker said:
Anyone else with a similar device?
Click to expand...
Click to collapse
I just installed the same unit. Only complaints are streaming music via Bluetooth only works if you open up the Bluetooth app (probably because android doesn't act as a Bluetooth sink). The other issue is, I cannot seem to change the brightness of the screen...its a touch too dim for daylight (I have a convertible) and a bit too bright for nighttime.
Glad to see you got a custom rom working.

Hey jcolebaker, do you think you could post what the LCD model number is? Is it a Hannstar HSD070IFW1-A?
Sent from my Nexus 6 using Tapatalk

vdubskey said:
Hey jcolebaker, do you think you could post what the LCD model number is? Is it a Hannstar HSD070IFW1-A?
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Sorry not sure what the LCD is - I don't want to pull it apart. It has a board on the back which has the following on it:
BL-TFT-V2.2(HCT)
That's soldered to another board that says:
P/N:BL-7inch-7000-KB-V00 20150311

Update question
Do I burn the update.img file to the sd card or do I simply copy it? And does it have to be my gps sd card or can it be a spare blank one?
Thanks
---------- Post added at 11:06 PM ---------- Previous post was at 10:42 PM ----------
dovoto said:
Do I burn the update.img file to the sd card or do I simply copy it? And does it have to be my gps sd card or can it be a spare blank one?
Thanks
Click to expand...
Click to collapse
Doesn't appear to be an img file in the context of "burn it" so I think that answers that question (just copy it) The head unit doesn't seem to do anything when I drop it in though (either with it on when I insert it or with it already inserted during a reset). Any thoughts?

dovoto said:
Doesn't appear to be an img file in the context of "burn it" so I think that answers that question (just copy it) The head unit doesn't seem to do anything when I drop it in though (either with it on when I insert it or with it already inserted during a reset). Any thoughts?
Click to expand...
Click to collapse
The file should be "update.zip". I used a new SD card - try formatting one with FAT32.
You just copy it to the card and insert it - I think the stock Android image automatically checks for update files that look like this, and loads them. This process worked OK for me - if not then hopefully someone here knows more about the update process than me.

HI !
I also try to root my 2din android without success... I have the same as your and I fail to get recovery and the android can't detect the update.img (or update.zip)
I have tried many tips, my sd card is in fat32, well detected by android ...
Do you have the tip to access to the recovery ?
Thanks

Logicsystem360 said:
HI !
I also try to root my 2din android without success... I have the same as your and I fail to get recovery and the android can't detect the update.img (or update.zip)
I have tried many tips, my sd card is in fat32, well detected by android ...
Do you have the tip to access to the recovery ?
Thanks
Click to expand...
Click to collapse
I think the file is "update.img" not "update.zip". Anyway I have not figured out how to get to the boot loader on mine, and I never got any recovery console. Sorry I am too much of a beginner myself to suggest anything.

HI !
I also try to root my 2din android without success... I have the same as your and I fail to get recovery and the android can't detect the update.img (or update.zip)
I have tried many tips, my sd card is in fat32, well detected by android ...
Do you have the tip to access to the recovery ?
Thanks
Click to expand...
Click to collapse
Instead of flashing a new image, go to the factory settings and type in *#hct#root#
This should give you root, no need to flash a new image

Logicsystem360 said:
HI !
I also try to root my 2din android without success... I have the same as your and I fail to get recovery and the android can't detect the update.img (or update.zip)
I have tried many tips, my sd card is in fat32, well detected by android ...
Do you have the tip to access to the recovery ?
Thanks
Click to expand...
Click to collapse
Bonjour.
If you would like more than root and you're still having trouble getting into recovery with your Hot Audio RK3066 1024x600 2 DIN Head Unit, the steps below have worked for me when the system does not automatically detect the mcu or update.img.
*** Prior to flashing any OEM or Custom ROM firmware, I recommend using a backup app like Titanium to save all your existing apps and data to your external micro sd card or usb memory stick.
1) Install Quick Boot or a similar apk from the play store.
2) Attach a wireless usb or usb keyboard and confirm it is working as intended. I use a Lenovo N5902 but most usb or wireless usb keyboards should work for this task.
3) Make sure you have the update and or mcu image file on your gps micro sd card or an attached usb memory stick (not the zip file).
4) Open Quick Boot, select recovery, and the system will shut down and boot into recovery.
5) Use your usb keyboard to scroll or arrow down to the update option with correct img file location, then press enter to execute the mcu or android firmware update or both.
6) After you update the android firmware, it is highly recommended that you go into the Settings > Backup & Reset, and select reset to factory and check the box to delete all data from the internal sd card. This reset to factory and internal sd card wipe should give your updated android system a clean start and help avoid system issues due to left over data from the previous firmware.
7) Delete the mcu and or update image from your external micro sd card. Done.
Hope this helps...
Best to all,
R

wrong thread. sorry

Android dvd s07 update
Hi,
I want update my android car dvd mercedes w203 2006
MCU version: MTCB-KGL-V2.80
Android version:
4.4.4._07012016
3.0.36+
[email protected] #2321
I need files to update, please help

Eincar - Allwinner - Android 7.1.2 help please.

Hello all, I have just signed up because this seems to be a good place for me to ask questions. I purchased an Eincar Octo-core, 32GB ROM, 2GB RAM running Android 7.1.2. I know very little about Android Headunit but require some help if anyone is able to.
For some reason it won't recognise .MP4 files so I am unable to watch any films in this format. It plays AVI, MKV and other file formats without any problems.
The internal mic is terrible so I purchased an external mic from Wish, which is a big improvement.
I read somewhere that the unit can be flashed with something like Pumpkin/Joying firmware which will allow me to root but not sure how or if it's definitely possible? I would like to install apps like Viper4Android but need root access. I've tried KingoRoot and it fails every time.
MCU version: 5.3.19-7-20-656201-170225
System version: V9.2.2_20171226.101304_TW2
Processor: UltraOcta-T8

Xtrons TR771L (Allwinner T8) updates (was: Xtrons TR771L Radio app freezing)

I had this unit for some 2, 3 weeks now, and while it worked great initially, all of a sudden the radio app started acting up.
It starts with some garbage displayed (e.g. 'jV!fxcj') instead of radio station name, and it is not responsive at all. If I manage to get to home screen or to anywhere else, it will just pop back up to the front, and it keeps happening constantly, Sometimes, after doing who knows what, I manage to kill it, and I can use the rest of the head unit, but that happens rarely. I also tried going to the settings -> apps, and killing the app from there, but it doesn't help.
I hard reset the unit, and the radio worked fine for about five minutes, and then it started happening again. Is there a way to at least disable the Radio app somehow, so the unit is usable in some capacity?

I have exactly the same issue on my TR771L. I got an MCU update link to load onto an SD card but haven't been able to get it to install on the unit.
The looping is really annoying especially at night.
EDIT:
Android version 8.1.0
MCU version T8.3.19-36-10-E53201-180726
System version V9.3.1_2018082.102205_MLT5

I had that problem too and did an firmware update and it seems to be ok now

This might be a stupid question, but where do you get the firmware update from? Is there a custom ROM to be installed on it as well?
I was always confused by many similar but different headunits, and was never sure if something would work on mine or not. Is it PX5? Is it MTCE? Is it none of these? Sigh.
On a positive note, it seems to work better now. I uninstalled the automate car dashboard and know it happens rarely if ever, and even when it does, a hard reset with a pen solves it.

Well, I contacted xtrons with a request for the update file, and they provided a link - https://1drv.ms/u/s!AjrY0uqbW_kBk36dRnJD4d_aaej8
This is a system update file, and after I went through the versions I have are:
Android version 8.1.0
MCU version T8.3.19-36-10-E53201-180502
System version V9.3.1_20181012.103419_MLT5
4x4Rob said:
I have exactly the same issue on my TR771L. I got an MCU update link to load onto an SD card but haven't been able to get it to install on the unit.
The looping is really annoying especially at night.
EDIT:
Android version 8.1.0
MCU version T8.3.19-36-10-E53201-180726
System version V9.3.1_2018082.102205_MLT5
Click to expand...
Click to collapse
You need to extract the files from the RAR file, put them on the SD card or USB, connect it to the head unit, go to Settings -> Car settings and then scroll down and choose MCU update or System update. Depending on the file you got, it should detect the update files and ask you if you want to reset the sd card/usb (I choose no just to be safe) and it took a bit of time to update, and the start loading animation (xtrons) took a bit more time than usual, so don't worry about it.

Allwinner t3_p3

Hi All,
this is my head unit from allwinner t3 series. it has 1.6ghz and has a 4x ARM Cortex-A7 CPU running 7.1.1
I have managed to install android auto via apk file, but while run, it gave me this error [https://photos.app.goo.gl/dxc25jjKvEzGnYFv5
that i have no clue on this
is there any one who can help me out on this issue to run android auto natively on my head unit, pls let me know. would be great help.:good:
device: https://photos.app.goo.gl/fv3F1LC2PAM5MUPh7
system: https://photos.app.goo.gl/jDspzdCGJJSfTz5P8
SOC: https://photos.app.goo.gl/GPJHWKE2hUdNZJJp9
MCU: https://photos.app.goo.gl/KAmKsnMaMU2TEgcw6

update: As no one replied, I decided to solve it my self and success!!
I have downloaded the apk files which were android auto trying to download and giving an error.
1st i have download "google apps" from apk mirror and then install manually via google drive.
2nd text to speech, same way as above and vaiola!!! when i fired android auto, its works perfectly without any error.
even google assistant did its work too.

Keen to get android auto working.
I'm keen to give this a go, are you able to provide links to the files you downladed?

Collection of 8227l firmware (android vers:6-9)

https://m.youtube.com/watch?v=FLe7yx3XJP8https://m.youtube.com/watch?v=FLe7yx3XJP8
click video link and comment. im not a developer i just listened to the amazon sellers directions and then searched 8227l in google and found a bunch of files, then tested them and now i want to pass the info on.
tp the guys asking if itll work?
i dont know you gotta test it like i did. they worked on my unit. and the files i donloaded came from other style stereos with android.
i just generally think they are all same firmware if it look similar to actual stereo design and ui .

This is what I have.
Android : YT9216b_00002_V004_20190728
8227L
MCU 3.1
MODEL NUMBER 8227L_DEMO
Can i install the 9.0? Is is real 9.0 or fake?( you know right now it has 6.0 but says it is 8.1GO)

its the fake 8.1 like always but it works so cant complain.

ighostsgunnaz said:
its the fake 8.1 like always but it works so cant complain.
Click to expand...
Click to collapse
Is this the 8.1go or just 8.1?
Also the android 9.0 has multi screen working?
Can i safely flash my head unit with the firmware listed?

Yes u can ( always do at your own risk like me); but use one of the touch only files. I can't upload pictures yet but i tried to post a screenshot of each firmware look. If its 8227l firmware it should update/flash.

ighostsgunnaz said:
Yes u can ( always do at your own risk like me); but use one of the touch only files. I can't upload pictures yet but i tried to post a screenshot of each firmware look. If its 8227l firmware it should update/flash.
Click to expand...
Click to collapse
Ok i may try to flash it this few days. Btw the 8.1 is the go ver or just 8.1? What is your recommendation to install 8.1go or 9.0 which is smoother and better?

slayer369 said:
Ok i may try to flash it this few days. Btw the 8.1 is the go ver or just 8.1? What is your recommendation to install 8.1go or 9.0 which is smoother and better?
Click to expand...
Click to collapse
They both looked very smooth even when running on my stereo. And i have a touch & button stereo it worked flawlessly no lag no glitch.
Only error was for the firmware being for touch screen only

Hello, I would like to know if this type of software has in some menu the option of autosleep to program that it turns off completely and does not remain in standby, in other Android it exists but here I do not see it. Can this Android 9.0 image be flashed even if it now has 8.1? Is it official or is it rooted?
thanks

i have the following head unit in the link attached will android 9 rom support this head unit ? It has touch button such as back,home,volume up/down.
and how does UI2 look like?
https://drive.google.com/open?id=0B-DeZ2cJS-h6UFVKSkswdExXX2NMNnc2akoydS1jcVQxd1hN

Hi guys! I ask for your help, a few days ago I bought an android radio unit on aliexpress, specifically the Junsun brand, with these characteristics:
Model: 8227L
Android version: 8.1.0
Kernel version: 3.18.79 (gcc version 6.3.1 20170404 (Linaro GCC 6.3.2017.05) [email protected] #57
Comp. Number: alps.mp.o1.mp5
2GB Ram
32Gb Rom
7 inch
With Canbus (ford mondeo 2007)
Its my first time with an android radio unit and I am very lost, I would like to know if I can change the firmware or update it, the one that it brings is very limited and does not let me change the brightness of the device or bluetooth functions.
Thank you for support!

Hi guys!
Is it suitable for me?
'Android 9'
ac960e2134.jpeg[/IMG]

I tryed to update using 8.1 archives, the unit detect the USB files, ask for update with a countdown, but when autorestart and start to update, the unit say fail, check USB and files...
Any solution?

i have 8227L with DSP will it work with this
ighostsgunnaz said:
Above are 2 android 7.1 & 8.1 example. Below is Android 9 example.
This is for those who have a ( 8227l ) android stereo and are looking for the update file zip. Also the mcu in the about phone menu should begin with ts . I have 5 files from jby tech, they are the Amazon seller of my hizpo android 8.1 stereo unit. From lots of research and emails to the company, i found that these Android stereos come in many brand names but run the same 8227l system. Another company with the same unit is joying but the device name is different along with the entire UI. Please do be sure you have a 8227l unit before proceeding. Other updates for other brands can be found on google and xda forum. I will try to remember to put link for xda forum. Below I have listed 2 groups of files. One is for touch screen only android stereo and the other is for touch screen with volume knob. Please choose according to your type of stereo. And follow the steps below exactly.
1. Download proper zip for your device.
2. Extract the 2 files from within the zip folder.
3. Copy & paste the ( .bin ) & other file on to a blank sd card or usb flash drive. Make sure these are the only 2 files on the sd card or flash drive.
4. With stereo unit powered off insert the sd card or usb flash drive and power on stereo. (Note some units will recognize the file immediately during boot, and others will prompt you after loading main screen. If unit does not recognize it, power off for 40sec and when u power on tap the screen in middle repeatedly with finger until the word "detected" shows in green. If it gives a message in red saying failed please check you have good download copy and have followed the instructions exactly. Will answer questions as i am able to.
All links to files and sites mentioned must be copy pasted. Im not able to attach external link yet.
The files below this line are for android6os,7os,8.1os 8227l units with a volume knob
Stock Android 7.1 firmware:
drive.google.com/folderview?id=1_D0IOyzUDNwo83Y4cVv054HPmaYs2JO7
Stock android 8.1 firmware:
drive.google.com/folderview?id=1LJ-FVgn73hxqJ-x7-pSJZuJDkfEV-c-7
Here is another version for this unit that is stock Android 6,7os but felt like it had a low resolution not for certain, but is safe to install in case base version still isnt a match for your unit:
Android7.1 V63
7drive.google.com/file/d/14UTC12nlWutwEqfsfux8spPY6qApw8Nt/view?usp=drivesdk
Android 7.1 v67
drive.google.com/file/d/1QQkQnxYZuO8rZ19KqVKPtVRIIE81sJ5b/view?usp=drivesdk
____________________________________
The files below are for the "TOUCH" only Android 9os 8227l units with touch back, home, vol -/+ buttons.
*** I have installed them on the non-touch unit and it will work but not allow volume knob to work, and will display " Activation code does not match " ***
Stock android 9 touch firmware version 1:
drive.google.com/file/d/19Yn_v6hXMJBObvgS7eqPN2nVgHhoisyX/view?usp=drivesdk
Stock android 9 touch firmware version 2:
drive.google.com/file/d/14gSJXCNqYPpUkgg7M_sd3jim6JvF1R3M/view?usp=drivesdk
Click to expand...
Click to collapse
I have a 8277L with Dsp, will it work with this one.

Hy guys,
I have this android radio with fake android 9.1
Android: YT9216C_AHD_00005_V004_20191017_HIFI
System: Android 9.1 XY AUTO:3.1 (8227L)
CAN pro: 3.0 (8227L)
DDR: 2G FLASH:32G
CPU: A7 1.3 GHz x4
MCU1: 3.1
Kernel Version: [email protected]#5
Build number: android-trunk-m0.AC8227L-V1.0
The unit have hardware buttons for volume up and down.
Can i install android 9 touch or android 8.1 ?
Thanks for the reply and sorry for my bad english.

rohan_agashe said:
I have a 8277L with Dsp, will it work with this one.
Click to expand...
Click to collapse
I have it too... Are there Any New firmware? I changed launcher to agama and each time i start the unit, usb doesnt detect it.
The 8.1 versión is horrible

code
ighostsgunnaz said:
Above are 2 android 7.1 & 8.1 example. Below is Android 9 example.
This is for those who have a ( 8227l ) android stereo and are looking for the update file zip. Also the mcu in the about phone menu should begin with ts . I have 5 files from jby tech, they are the Amazon seller of my hizpo android 8.1 stereo unit. From lots of research and emails to the company, i found that these Android stereos come in many brand names but run the same 8227l system. Another company with the same unit is joying but the device name is different along with the entire UI. Please do be sure you have a 8227l unit before proceeding. Other updates for other brands can be found on google and xda forum. I will try to remember to put link for xda forum. Below I have listed 2 groups of files. One is for touch screen only android stereo and the other is for touch screen with volume knob. Please choose according to your type of stereo. And follow the steps below exactly.
1. Download proper zip for your device.
2. Extract the 2 files from within the zip folder.
3. Copy & paste the ( .bin ) & other file on to a blank sd card or usb flash drive. Make sure these are the only 2 files on the sd card or flash drive.
4. With stereo unit powered off insert the sd card or usb flash drive and power on stereo. (Note some units will recognize the file immediately during boot, and others will prompt you after loading main screen. If unit does not recognize it, power off for 40sec and when u power on tap the screen in middle repeatedly with finger until the word "detected" shows in green. If it gives a message in red saying failed please check you have good download copy and have followed the instructions exactly. Will answer questions as i am able to.
All links to files and sites mentioned must be copy pasted. Im not able to attach external link yet.
The files below this line are for android6os,7os,8.1os 8227l units with a volume knob
Stock Android 7.1 firmware:
drive.google.com/folderview?id=1_D0IOyzUDNwo83Y4cVv054HPmaYs2JO7
Stock android 8.1 firmware:
drive.google.com/folderview?id=1LJ-FVgn73hxqJ-x7-pSJZuJDkfEV-c-7
Here is another version for this unit that is stock Android 6,7os but felt like it had a low resolution not for certain, but is safe to install in case base version still isnt a match for your unit:
Android7.1 V63
7drive.google.com/file/d/14UTC12nlWutwEqfsfux8spPY6qApw8Nt/view?usp=drivesdk
Android 7.1 v67
drive.google.com/file/d/1QQkQnxYZuO8rZ19KqVKPtVRIIE81sJ5b/view?usp=drivesdk
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The files below are for the "TOUCH" only Android 9os 8227l units with touch back, home, vol -/+ buttons.
*** I have installed them on the non-touch unit and it will work but not allow volume knob to work, and will display " Activation code does not match " ***
Stock android 9 touch firmware version 1:
drive.google.com/file/d/19Yn_v6hXMJBObvgS7eqPN2nVgHhoisyX/view?usp=drivesdk
Stock android 9 touch firmware version 2:
drive.google.com/file/d/14gSJXCNqYPpUkgg7M_sd3jim6JvF1R3M/view?usp=drivesdk
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When I give the code 12345678 in the menu, I come in a separate menu in Chinese on my ac8227L Someone confesses to this.

how to upgrad my drive to android 9

noomkhup said:
how to upgrad my drive to android 9
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I cant choose Android upgrade too, like the previous post shows: it is grayed out...

Soldiaz said:
I cant choose Android upgrade too, like the previous post shows: it is grayed out...
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i think sell this device and buy new device android9 hahaha
Sorry My English is stupid - -"

i think i have the same unit as yours.how was your after flash result?
slayer369 said:
Ok i may try to flash it this few days. Btw the 8.1 is the go ver or just 8.1? What is your recommendation to install 8.1go or 9.0 which is smoother and better?
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