yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] sunnyy15:
May-day, SOS, Socorro! My Unit no longer loads Android.

Thanks for the wealth of information on XDA website that keep people like me going.

I have the Unbranded TH8681GA which can be seen from the following website:http://www.szcreat.com/index.php/wareshow/creat/1/en/108108,52133/52133.html Further details about this unit are given below.

1. My nightmare started after I tried to root my unit with Root Master 2.11 unsuccessfully. I can still use my WIFI adaptor or dongle on my laptop without problems. My WIFI settings on the DVD unit got corrupted and each time I activate the WIFI, I see a permanent message as follows: “Obtaining IP, saved, connecting…” and it never connects!

2. I tried doing a Factory Reset with the code 7890, but no way!! The following message will be permanently frozen on the screen: System recovery, please do not cut off the power, the system will automatically restart, but never restarts. Each time I use the combined function of the Menu button + Volume to reset, the following 2 lines message appears: Update start, update end but never updates!!!

3. Well, the worst is yet to come. I tried doing things according to instructions from XDA to root the unit, but no success (http://xdaforums.com/showthread.php?t=2528349). Instead, a black screen with Android logo which hangs. According to the instruction, the black screen should be expected and when the Home button is pressed, the screen would return to normal... For me, pressing the home button has not worked. All I can see now is the Android logo waving on the screen each time I press the reset hole. I was trying to root my unit just to, at least, allow me to get back my WIFI.

Wi-Fi has stopped working, Factory reset has never responded, I cannot boot into safe mode and the unit cannot load information from the removable SD card. I wonder whether there is a way to wipe the whole version of the Android and start afresh.

I will appreciate information from anybody who has knowledge or has gone through this situation, at my own risk. Please, any minimum help is appreciated. For me, it is not worth having a device that does not allow me to do what I want, compared to my cell phone.

Warm regards to all.

==================================

The unit specification is as follows:

Model: TH8681GA

Android 4.2.2 Cortex dual A9 core, 1Ghz

MCU version: 4.3.10.1-10-612101 (VW 4.3.10.1, CONFIG, RDS, BC6, Color, Rohm37xxx, TEF665X)

System version: 2.8.8

DVD version: 2.13.11-hd860mc

==================================
[Android Head-Units] ryan-mc:
https://yadi.sk/d/tbaxJYL9cJjKK/Firmware take 2.8.8 permroot drop the firmware files on external sd hold power button and press reset button let go of reset button but keep power button held until update shows on screen

---------- Post added at 10:30 PM ---------- Previous post was at 10:25 PM ----------

your rear view camera stopped working after upgrading?

---------- Post added at 10:33 PM ---------- Previous post was at 10:30 PM ----------

the card unmounts when you turn it off? is it not mounting when to turn it back on?
[Android Head-Units] jeanbon12:
yes :(

i precise that i have not camera, just rear sensor radar
[Android Head-Units] j.d.1:
FADE front and rear speakers? help

Hi guys,

I've hade my android for about a year, had it installed in a project car I've been working on, a 1981 cutlass, modification but it looks great and works well. I'm getting ready to install a sound system. I was playing around with it and have have TURN OF MY FRONT SPEAKERS AND CANT REMEMBER HOW TO TURN THEM BACK ON!!! Ivery player around in the eq and zone and can't find the FADE for front and rear speakers?? I turned them down/off because they were blown and rattled when I turned the radio up. If anyone can help I would really appreciate it. I have the model, BT key is to the left bottom. please guys any help, would be appreciated! :confused:
[Android Head-Units] perieanuo:
do a factory reset from menu,forgot to mention before;same thing for mr creambun2006 should do the trick
[Android Head-Units] kaween:
I'm nearly 50. What's your excuse ? :laugh:

Choose your EQ(uilizer) -> ZONE -> most units will show a "BALANCE" button. Press it, and audio should return to all speakers.
[Android Head-Units] perieanuo:
equalizer do this balance/fader,just go to equalizer and

move the poit in the middle in zone area
[Android Head-Units] Codykeefe84:
Ok guys no matter what firmware I update to my bluetooth does not work. It works only right after the update is completed and then stops after I reboot. Has this happened to anyone before? Would love to figure this out.
[Android Head-Units] j.d.1:
goood for you papa!

That doesn't work, Been there tried that even before I posted here. Simple commonsense 1st right? I'm not sure what's happened, it has to be something else... thanks

---------- Post added at 02:11 AM ---------- Previous post was at 02:06 AM ----------

I tried that before I posted here, i can't remember what I did! Uff:silly::silly:
[Android Head-Units] jeanbon12:
hi

it doesn't work, i reset the unit but still no bluetooth, no parking rear sensor, and i lost also the home screen button on the top left :(

I flash a new firmware (2.8.7) and still the issues, even the home button on the top left of the screen

please helppp me :(
[Android Head-Units] TheSSJ:
Hi,

maybe I had the same (or a similar issue)...Go to settings, sound and check the settings there...there should be an option for the navigation instructions to be issued only on the front speakers or all of the speakers.

When I switched it to all, no sound at all could be heard. When I set it back to front it worked again...

Maybe it helps?

Cheers
[Android Head-Units] creambun2006:
reset still keeps unmounting mico sd card

done reset but still keeps losing msd card have to re mount or take it out put it back in tried another card , still same problem

whats best mico sd to use and whats max gb

tried 32gb and a 8 gb sandisk is the ultra ok or something slower ?

class 10 or 4 will order a few in to see if its a card issue :confused:
[Android Head-Units] TheSSJ:
Sometimes punctuation marks make reading easier :silly:

I have a Samsung Ultra with 32GB which the device can read with high speed data rates. I switched the sdcards therefore and I was not disappointed.

Regarding your sd card problem I can't tell unfortunately :/
[Android Head-Units] copper7op:
I purchased this unit for 200 locally off Craigslist, and I can't get around the 3rd-party audio app for the life of me. I've changed firmwares with various amounts of success.

I'd like to sell this unit and jump to one of the higher end units, does anyone know if this audio issue effects any other units???
[Android Head-Units] Black6spdZ:
2.9.4 is not KitKat 4.4.2, its still 4.2.2
[Android Head-Units] creambun2006:
re

any link please ,

does it have the red warnings,

cheers

mark
[Android Head-Units] Black6spdZ:
from the russian 4pda forum, BUT unless I've done the update wrong its still 4.2.2 even though it says version is now 2.9.4. I even ran the full format "update". yes, red UI warning is there. So someone must have made up the kitkat version info
[Android Head-Units] Codykeefe84:
Anyone know what causes my bluetooth settings to be wiped after rebooting after a update?
[Android Head-Units] j.d.1:
thanks!

Thanks alot for your reply, I did, only thing in sounds on my android in sounds is , touch tones, volumes and 1 other item neither gives an option. There was a recent update I ran and it started to boot faster than normal nearly half the time it took before! I still can't figure where I was in settings when I faded the speakers to the back. I'm so annoyed by what I've done, ha some nights when I can't sleep, I'm in the garage in the car trying to figure what I did.. do you know if there is an app on there that your able to turn off speakers ?..ufff! Thanks again for your help!
[Android Head-Units] balaes:
New version, 2.9.4 800x480

https://yadi.sk/d/5vWew_Z_fWotd

or

https://yadi.sk/d/0kz8O3rzfWpDR
[Android Head-Units] Last_Strike:
Hi,

after spending hours of reading, searching and testing it seams I have found the Problem.

I tried to update my Head Unit and overwrite the MCU-File.

Now I am searchin the MCU 4.3.1-1-10-0901

I have read in this threat, that some User have this MCU already on the Unit but I could't find it anywhere in the INet.

Thanks

Last Strike
[Android Head-Units] svEmirKo:
Did anyone updated to the "new" system?

Is it worth it to update?!

Screenshots?
[Android Head-Units] Codykeefe84:
After further looking into the problem it appears it's an mcu problem I am having with my unit. Now I can't seem to find the right one. Anyone on here have the 2 knob version with the volume nob on the right side that can tell me what mcu version you are running?
[Android Head-Units] tennesseewalker:
Hi all, my friend have 3 problems. First, after 1 week of using that unit, he cannot play videos posted on FB correctly (just sound is playing) and screen is frozen until play is stopped. What can be wrong? Second, how can we reach the recovery boot if there aren't any HW buttons, just touch buttons on the left side of unit. I dont know the brand (its from aliexpress) and its determined for Skoda Octavia 2014/15 (VW group). Also there is no SD card slot, just 2 USB and 8GB iNand inside. Third, The brightness is set to max level, but after few secs, the screen is getting darker (just a little bit but its still very uncomfortable when sun is shining)

Thanks a lot guys for help, appreciate it.

TW

EDIT: system: 2.9.3_20150112

android: 4.2.2

mcu: 4.3.11-22-11-E50201
[Android Head-Units] balaes:
Its 4.2.2, only difference i`ve notice is vidoe player, wich is not stop on reverse or home (sounds is still hear)
[Android Head-Units] creambun2006:
re

Has new update got the red banner ?

cheers

mark
[Android Head-Units] Codykeefe84:
By red banner do you mean the UI unauthorized crap. Cause if so yes it still has it.

---------- Post added at 10:19 PM ---------- Previous post was at 10:15 PM ----------

Anyone know what the best firmware is without the red warning on the screen. Or how to get rid of it with the latest update?
[Android Head-Units] balaes:
yes
[Android Head-Units] macca017:
I didn't get the red banner, however, mine is a Keier unit.

There are a few extra car models, including Mitsubishi Outlander.
[Android Head-Units] creambun2006:
re

The 2.88tt is the latest one without red banner that i have found.

anyone else tried later ones with out this red message please

thanks

mark
[Android Head-Units] spazfishy:
Wondering if anyone knows which mcu updates work for which radio or how to tell. I made the mistake of updating to a newer mcu version 4.3.9-10-650101 from 4.2.5-1-10-2010 and now my volume knobs do not function. I am hoping I can go back to 4.2.5-1-10-2010 but what if there is a better newer option now. How would one know what is compatible?

My radio only has the one knob on the left. I am also on the latest firmware 2.9.4

Thanks much!
[Android Head-Units] nsodmordex:
Just in case anyone is wondering, cause I've seen this cone up a few times, it is possible to swap out the screen for one with higher or lower resolution. The 800 by 480 lcd is tft, and the 600 x 1024 is lvds. The mainboard in both the an-21 and the huifei units have a tft connector with the inverter on the faceplate. in order to install the higher resolution screen a small signal converter board is required to change the tft signal to lvds. in order to get the backlight functioning the pins on the faceplate connector need to be bridged to the ones oh the adapter board.

This is tested working going both ways, as I had a huifei unit with higher resolution screen and no physical buttons and an an-21 with buttons/knobs. Overall liked the an21 better so I swapped the screens. After updating firmware to match new resolution both units function perfectly.

Since I already had the board in my Joyous unit I didn't need to buy it, but looks like they are about $10 on aliexpress. Also not sure if this is true off all units, but in my 8" vw an21 the digitizer was only taped to the lcd, not glued, so unassembling to swap screens does not require heat gun or digitizer replacement.
[Android Head-Units] spazfishy:
Anyone get Android Auto installed? It is not in app store and cannot locate working apk.

Thanks
[Android Head-Units] nsodmordex:
Android auto requires lollipop, I don't think any Chinese android headunits work with it. It's unlikely the an21 ever will since it seems developers have no plans to upgrade from the 4.1 kernel
[Android Head-Units] spazfishy:
Certainly a bummer..

Thanks
[Android Head-Units] Codykeefe84:
Anyone else having problems with 2.8.8 not allowing you to play music on apps such as pandora?
[Android Head-Units] Ruprect:
Have you tried a different sound priority in settings
[Android Head-Units] darkromance:
hello guys

I still have little issue to set up my stereo.

The problem is the poorly calibrated touch screen, and the resolution that seems to be forced to a lower resolution.

Even the MCU is not correct, it should be 4.3.1-11-10-650101

Seller was not so cooperative so i''l hope that someone could help me to fix this issue

I'm sharing some pics hoping they can be usefull to someone

Thanks
[Android Head-Units] sunnyy15:
Hello all,

Is there anybody out there to help? The solution to the cycle of problem that I have will benefit many people on this forum. The summary of my problem is as follows:

1. My WIFI adaptor does not connect. But the same adaptor works fine on my laptop. I think the file controlling WIFI is corrupt. Where can I get one, in apk.format to replace it?

2. If my WIFI doesn't work, I cannot root the unit because I have not yet seen a rooting method that does not require connection to internet.

3. I tried tried replacing almost all the apk applications on the unit, still no solution.

4. I tried to do factory reset, but no way, the system hangs overnight for many hours until I restarted and switched it off.

5. I tried updating the MCU, no solution. I tried updating the System Version 2.8.8 to "2.8.8_TT_permroot" or to the recent "version 2.9.4" but no success.

6. In fact, none of the files with the following format on the website works on my unit: 8d8d1b1a-ea4a-11e2-a661-000c29ba27c0. I have tried almost all, and the error message I get is as follows:

UPDATE START

8d8d1b1a-ea4a-11e2-a661-000c29ba27c0 DONE

8d8d1b1a-ea4a-11e2-a661-000c29ba27c0 FAILED

UPDATE END​

7. I tried to use the fullformat file to wipe out everything, but still the error message of file appears.

8. The Chinese are not very good in giving after sale support. Whenever I call them, asking question in English, they hanged on me. So, the big questions are: where do I start? Where do I get the correct files? Even if I clean the whole system, where do I get files to re-install Android? I cannot do backup, and maybe, backing up the system now is useless because the system is corrupt and will not allow me to do anything that I want.

Thanks for taking your time,

Regards everyone.
[Android Head-Units] anpo:
no sound or mute symbol

Anyone knows where that crossed over sound symbol in the top status menu comes from and how I get rid of it?
[Android Head-Units] canismajor:
How to root thermware 2.9.4

Hi all, I've tryied to root the firmware version 2.9.4 using the biduroot but it not work, I tryied with a factory reset, with another firmware (2.3.9) and with the root procedure describet in page one but notting seems work. Someone could help me? Thx in advance
[Android Head-Units] kaween:
I suspect you DO have sound ? (Am I seeing a Poweramp toast in the right corner .... with something that betrays a good taste of music too ... :) )

I've had something like that too, it was connected to the sound-priority setting of the AN21-U. I THINK it went away after I changed the audio-priority back to "Intelligent" (which caused other issues of course) and after a restart of the AN21 I switched it back to "third party", and the icon stayed away.

A bit too long ago to remeber it clearly, but it was connected with the sound-priority setting for sure.

On a personal note : my ongoing feud with RDS RadioText : it turns out the AN21 radio APP does not like the way RadioText is transmitted by the majority of the radio stations in Belgium. From what I hear of other forum members in the Netherlands, the same's true over there. So even if you THINK the AN21-U has no issues with RadioText and you live in Europe, you are _probably wrong or just very lucky_ that it works for you. :)

I've now found some small local radio station which transmits RDS RadioText in a manner that "fits the AN21-U apk", as the RDS-station name AND the RadioText part (artist and title) are always transmitted correctly althoug the radio signal itself is weak and even looses Stereo info sometimes.

I'm going to see if I can get to the bottom of this using something like RDS-Spy to try and analyse just what the official stations do differently compared to this small local station. Anyone with experience using RDS-Spy here ?

If I can't any results from that route, I may end up trying a DAB/FM/DBT-T stick and Wavesink instead, as they do offer RadioText support and can be made to run on cheap sticks starting at 10USD. Another upside of that route would be that you'd acutally be able to modify the Radio sound using stuff like V4A, which is impossible on any current 2din unit as the soundstream of the Radio tuner is not treated nor processed by the Android software.

[MENTION=2155396]canismajor[/MENTION] : I'd try to fall back to 2,8,8 TT permroot and see what happens.

[MENTION=2227084]sunny15[/MENTION] : it's not that I don't want to help, but honestly I've no safe solution for you. As your problems seem to have started after a failed root, its likely that root attempt wrote all kinds of stuff which it wasn't supposed to do.

There's talk about using a lower version of the system that causes some kind of "deep clean" of the system to clear up this kind of "version mess" you seem to be stuck in. But if I'm not mistaken, doing that can risk you to loose DVD-functionality and what-not. I THINK it's version 2.6.7 that is used for stuff like that, you'll have to look for it in this forum to be sure.
[Android Head-Units] canismajor:
Thanks kaween, i've rooted the firmware 2.8.8, what can Ido to root the latest firmware? Thanks in advance.
[Android Head-Units] Chrorsa:
Here's the link to Nikkos post:

http://xdaforums.com/showpost.php?p=49294199&postcount=1186
[Android Head-Units] M89SE:
Can somebody please upload com.android.settings_2c11.apk from Firmware 2.8.8 TT Permroot, stupid as I am diden't make backup while experimenting :(
[Android Head-Units] perieanuo:
com.android.settings_2c11.apk and stuff

https://yadi.sk/d/tbaxJYL9cJjKK

here you find the system app you needa and basically all the stuff needed to install/root/configure
[Android Head-Units] wwechampion100:
"AN-21 U" - Unbranded 6.2" 2 DIN Pure Android 4.1 Car Stereo Radio Head Unit [ROOTED]

Hello friend.

I have not managed to repair the equalizer.

Here I put the video with the problem:

drive.google.com/file/d/0BxDEHQIWcqvea2t0ZTJFX2w5Tm8/view?usp=sharing

And here is a picture of the model car radio:

drive.google.com/file/d/0BxDEHQIWcqveTHBzZFJtMGFocFE/view?usp=sharing

I tried to talk to the vendor and no way to to send me a patch to fix the problem.

MCU version installed: 4.3.2-1-10-6101

Android Version: 4.2.2/2.8.7_Patched_permroot

Since the update have that problem, I tried to install the previous version and the problem continues. I installed several MCU and not solved.

If someone tubiese this same model, please could you send me the MCU, since the problem can come from there.

Thanks in advance. A greeting.
[Android Head-Units] mtresk:
If your device have a resolution 1024x600, just install this and this problem will go away.

https://yadi.sk/d/2f_lDaGKd7VaL

This is not a firmware. It is something like the display driver.
[Android Head-Units] M89SE:
Thank you so much!! :D
[Android Head-Units] gpmg762:
Don't know if you still need it but here's a copy I revert to and restored mute function on the swc.

https://www.dropbox.com/s/s8wimpozkr29yq2/4.1.0-1-10-2101.zip?dl=0
[Android Head-Units] macca017:
Can-Bus

If anyone has a unit from Infinity, maybe you could help me out.

My vehicle is a 2014 Mitsubishi Outlander ES.

There are no plugs on the original harness for the small Can-Bus connector and there are no connectors on the supplied harness or can-bus box for it to fit?
[Android Head-Units] sunnyy15:
Thanks Kaween,

I so much appreciate comments. It gives me some clues on what to do. Like I said, I will risk everything to find a solution because I prefer having a device that will enable me to install whatever I want. So I would not mind doing the deep clean you said with lower version. My biggest worries is: where will I get the Android software to do a clean installation after wiping out everything? Give me reference to any webpage that can help me on this.

Regards,

Sunnyy.
[Android Head-Units] kaween:
I think I must be feeling a bit like your headunit at this point. Cold and miserable. Bouncing back from a bad flu attack. :silly:

Take a look at the repo's (https://yadi.sk/d/tbaxJYL9cJjKK/Firmware). There's 2 of those "full format" thingies there.

EVERYTHING else you need is also there ! (https://yadi.sk/d/tbaxJYL9cJjKK)

As I understand it, using those should "clean out all the garbage", but I can't comment on the risks or problems caused by them. Search the forum using this as info and see what people reported using it. I personally make a point of it not to comment or recommend stuff that I've not tried out myself, but it seems these files have helped people in the past.
[Android Head-Units] darkromance:
I've already used those files that I found in the forum by searching, in fact I solved the problem of the resolution with a factory reset.

My device still have problem of calibration with the touch screen; i'm tring to write this files again but without success

it says: Update start

********* Update end

Perhaps the files are already in the system

Maybe flashing the variant files 800x480 and after reflashing files fo 1024x600 i can fix it

any suggestion is welcome
[Android Head-Units] saints5354:
Thanks mate, u save my day after trying all method, brilliant. I had stuck at boot animation logo for days.
[Android Head-Units] Skratchuk:
No problem, im glad that past posts are still helping people.
[Android Head-Units] Haligan:
Will a wifi ODB2 adapter work with this radio? Any work around for the bluetooth adapters?
[Android Head-Units] macca017:
I have used a wi-fi adapter with my unit, works great.
[Android Head-Units] bencyp:
OBDII with USB

HI Friends,

Can anyone tell which OBDII adapter works on USB with this unit? Can you post the pic of the adapter that is working?

Is the adapter FT232rd chip or is it CP2102 chip for USB?

Regards,

Bency
[Android Head-Units] Shadow128:
Hi together,

I found that old posting in this thread.

Did anyone find a solution to use a trigger to pause the actual played track in poweramp?
[Android Head-Units] kaween:
My USB OBD is being reported as a Generic Prolific Usb to Serial device (2303).

Picture is pretty worthless as it says nothing about the interface's inards. For all purposes and intends, it does look 100% like this : h t t p://www.benl.ebay.be/itm/Mini-ELM327-OBD2-OBDII-Car-Diagnostic-Interface-Scanner-Tool-Code-Read-USB-Cable-/281439654846?pt=LH_DefaultDomain_3&hash=item41871c53be (inclusive the orange sticker). My friend's got something that looks identical, but it has a blue+green sticker, and that one is NOT usable with the AN21-U.