yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] a23bed:
saved me too

I had the exactly the same thing happened to me today.

Just got my unit (2 knobs with left volume) a few days ago and tried to root, so I can access NTFS and such.

While searching in desperation I came across your post. What’s the chance of it being on the last page of a 450+ page post. So thanks to you, Skratchuk and ‘Baidu root’ for saving me too!!

Feeling daring and somewhat lucky, I installed 2.7.29 firmware (from 2.7.9) and rooted again without any issues this time. All my Apex launcher settings were there, except for a few widget size changes, all my previously installed app etc. and better looking icons.

I’ve noticed an improvement on my SWC too, when in the radio app a single press on NEXT / PREVIOUS button moves to the next preset station, a long press starts scanning, excellent.

I have one issue remaining my BT OBD2 adaptor. For the life of me I could not get it to pair.

Any chance you could elaborate on the procedure.

My system now reports;

Android version

4.2.2 ---(I think this is fake)

MCU version

4.2.15-1-10-2101 ---(no change from previous)

System version

2.7.29

DVD version

2.13.11-hd860mc ---(no change from previous)

Thanks to all at XDA
[Android Head-Units] nhdn:
What does the home screen look like on 2.7.29 firmware

I installed 2.7.29 firmware (from 2.7.9) and rooted again without any issues this time. All my Apex launcher settings were there, except for a few widget size changes, all my previously installed app etc. and better looking icons.
[Android Head-Units] dasher:
I just spent a great part of the day struggling with the sub popping issue. It would pop turning on/off/muting, changing audio sources, changing radio bands/stations, and going from any source that was playing audio to the home screen. I read on various ford forums (I have a ford edge), that I needed to install a resistor or voltage regulator inline with the amp enabler line to bring the voltage down from 12v to 5-6V. I tried both and they did reduce the popping a little on turning on the unit, but it was still quite loud and didn't do much for the other scenarios. I really like the unit, but the popping was unbearable! I'm going to return this unit, hoping that mine is just defective. Until then, I'm back to stock.
[Android Head-Units] Skratchuk:
Are you close to a plug socket cos if you are might be a good thing to test on a home amp or stereo if you have one and see if it still does it, if not you know the stereo is not the problem.
[Android Head-Units] evansamms:
I signed up just to try to help. I have the same unit, volume on the left as well. Mine has SD marked near the slot on the left, and GPS marked near the sd card slot on the right. Mine will ONLY update using the slot on the RIGHT. worth a shot perhaps?

Side note, thanks everyone for all the amazing info in this thread. I've read it all... that's a lotta reading!
[Android Head-Units] bobintetley:
WinCE/Android hybrid

I saw earlier in the thread that some versions of this unit are a hybrid WinCE 6 system. I think I have one of them, it's this unit, sometimes branded as the Erisin ES8300A and the Klyde KD-8300:

rawsontetley.org/ref_cardvd.html

WinCE is used for all multimedia functions with Android just being there for GPS. My Android stopped working after an hour or so and went into a bootloop. Some versions of this unit allow formatting of the /data partition by holding the reset button when turning the ignition on but mine doesn't seem to be one of them.

I'm just hoping that someone out there has this unit and can say "it IS an AN-21U and here is what you need to do to factory reset or upgrade the firmware".

I should add that I've read the thread thoroughly and tried all the combinations of reset+POWER listed among other things. I've also tried downloading the 2.6.60 firmware, putting it on a FAT32 formatted MicroSD card and then trying to get it into firmware update mode with the card in both the GPS and SD slots. I'm completely at my wits end with this thing!

Thanks!

Rob
[Android Head-Units] ackyo:
to those of you running the VW version of this, what firmware/mcu version are running? is it the latest?

i am making some time to update my unit this weekend!!
[Android Head-Units] Zaphod-Beeblebrox:
You may have seen references to hybrid Win-CE systems, but they are not AN-21U variants. They are a different animal all together.

I doubt you will find any value in any of the AN-21U firmwares for that device. Suggest you start here:

http://xdaforums.com/wiki/Generic_Android_Head_Unit

and see if you can identify which one you have, and the support thread for it.
[Android Head-Units] bobintetley:
Ok, thanks for that!
[Android Head-Units] cmtas:
mcu 4.2.13-1-71-2101
[Android Head-Units] Vladimir2k9:
does somebody have the same head unit

http://www.aliexpress.com/snapshot/6128722361.html

or

from http://szsion.en.alibaba.com/featureproductlist.html

how compatible firmwares from this thread with it?
[Android Head-Units] juninyo:
hi, thanks for replying. The slot having left my device in this void, has a foam inside, I always use the right slot, thanks anyway. what I do not understand yet is because I can not update, I update 2 times and no problems. Can be something that affects the device?, I just connected the rear camera.
[Android Head-Units] jpapadami:
Thanks. Mine is 4.3.2-1-10-2101. which is the most recent I believe. I'll try some older MCUs to see if the odd behavior persists with Torque Pro or not.
[Android Head-Units] aluzjunior:
Hi.

o bought this unit: aliexpress.com/item/Mitsubishi-ASX-2010-2012-Radio-Pure-Android-4-Multi-touch-Screen-1GHz-RAM-1GB-DDR3-GPS/1874715695.html

i am not sure, but i think its a AN21 U because the main processor (Mstar) and system UI.

if some one can confirm its a AN21 U, can i use the forum firmware to update and root the unit?
[Android Head-Units] bencyp:
You cannot completely eliminate the popping sound of subs. The Pre-Amp inside is designed in such a way that when there is a audio cutout or signal then the Pre-amp gets activated. So, when you press mute, a negative signal is given to the pre-amp and you hear that popping sound. And when there is audio then this negative signal is cut off and you again hear the popping sound.

The best way to reduce this is the reduce the volume on your main Sub amp. You must be having a knob on your sub amp to reduce/increase the input signal and then increase the Sub output from the Graph on head unit. (Open the equalizer and go to the zone and increase the Sub level).
[Android Head-Units] gwinn:
Factory Shipped firmware etc????

I have one of these head units and I wanted to know what the factory shipped firmware, MCU etc are and also what updated versions you would recommend???

Cheers
[Android Head-Units] Suzook1:
does anyone know the file format of the movies that play on this unit. I am wanting to rip some movies but need to know the native format. Avi, mp4 etc etc
[Android Head-Units] aluzjunior:
i want to root, i have a unit woth 2 knobs (volume and tune), need to update?

In my system info i have:
[Android Head-Units] freddienux:
Upgrade stereo

Hey guys I want to upgrade my stock radio. I have a 2002 Cadillac deville but want a stereo that has android built in it. I want something close to google os. What do you recommend? Thx in advance
[Android Head-Units] bencyp:
It depends on the player you are using. I am using MX Player Pro. It can play almost all the formats like MP4, AVI, WMV, MKV, 3GP, MOV, DIVX FLV, MPEG, VOB, XVID. and more.
[Android Head-Units] ljon:
I'm thinking of buying one of these, can someone recomend a seller you used? I dont shop much online and dont want to be ripped off.
[Android Head-Units] guano30:
Any change to get an MCU X.X.X-7-10-2501 for up to date Firmware?

HI!

More or less i loose hope that there will be an up to date Firmware with my MCU Version X.X.X-7-10-2501.

Contacting the Manufacturer is also useless, because i already tried 10 Times but no response.....

Can somebody tell me where to buy an other Faceplate that uses an up to date MCU ?

Other Problem:

My Unit loses Sound from time to time with 3rd Part Apps. I am using Poweramp and from time to time Sound is lost.

Only pushing she little reset Button under the fake SD Card Slot helps. When the Unit reboots Sound is back again.

Somebody knows that issues and can tell me a Solution?

Switching in Sound Setting between "intelligent" or "3rd Party" dont help.
[Android Head-Units] evansamms:
Since I've registered, I do have a question. I've got the version with two knobs, volume on left, two microsd card slots on front, two usb ports on wires at the back, no external mic.. Unfortunately only red leds it seems, as I cant make them change, even with the color app. MCU 4.2.15-10-10-2501, and System Version 2.7.11, rooted.. The unit works great really, I've got a cheapo usb to OBD2 from ebay, running torque as well.

My issue is with the screen. Periodically (more often than not recently), when I boot the unit, the screen seems sort of pixelated, and the colors are off, and it almost seems of a lower resolution. Once she "warms up' she usually works fine, but sometimes flickers to the crappy mode. Almost seems like a loose connection or something, as I can smack the side of my console and make it flicker, and it seems to be worse on rough roads. My wiring is good, all soldered and heat shrunk (I'm an aircraft avionics tech). Anyone have anything like this go on? I'm figuring I'll have to pull it apart and look for something loose, cold solder joints, etc, but was just curious If anyone has had the issue. I think I've read every page of this thread, and haven't found anything quite like this.

Thoughts, comments? keep the great info coming.
[Android Head-Units] average86:
Mcu-7-10-2501

X.X.X-7-10-2501

who may need it. I have long been looking for it.

4.1.0-7-10-2501.zip

4.2.5-7-10-2501.zip

4.2.7-7-10-2501.zip

4.2.9-7-10-2501.zip
[Android Head-Units] aluzjunior:
My MCU is 4.3.1-11-10-4501

maybe theres an updated one?
[Android Head-Units] guano30:
Ty for attaching this MCU Files.

Sadly they are old ones, but new Features like Know Mirroring, Shutdown Delay dont work with this Versions.....

We need newer ones but i guess they stopped supporting our Faceplates for the newer Firmware Versions :(
[Android Head-Units] kaween:
Personally, I recognize this kind of reaction from my days as a PC-tech : what you're discribing there could be seen on laptops too sometimes, and when it wasn't the GFX chip that was fried, it turned out to be a bad connection in the LCD datacable connected to the mainboard or a cold joint in the LCD's screen controller. I doubt very much the issues has to do with your wiring : the culprit will be found in the unit's internals I have no doubt. Check the flex between mainboard and LCD panel first. It wouldn't be the first time the issue is found there (badly slotted lcd cable on either side for example, or sometimes one of the conductive pads on the flex cable would be damaged/curled as it came of the flex-plastic carrier itself).
[Android Head-Units] average86:
if you can do without bluetooth, take this mcu here :4.2.13-7-10-6501 a. zip.

There goes Shutdown Delay and buttons exchange
[Android Head-Units] guano30:
Yes i know about that MCU Version.

But without BT for me useless i need it.....

So frustrating that there is no new Version of that MCU is available.
[Android Head-Units] pedalquickly:
Lost some audio after upgrade

I have had my unit for several months now and really like it. I rooted and upgraded MCU and Firmware early on with no issues. Yesterday I got bored and saw a new firmware 2.7.29 (was on 2.6.93) and MCU 4.2.5-1-10-2101 (was on 4.2.13-1-10-2101). I then rooted again with the new Baidu rooting method.

I now have the following problems.

1. I can't over write the file in the system\app folder with the one described (com.tw.service_a5a4_modded_2.7.22.zip). I always get failed.

2. I have lost Audio in my N7 audio player and youtube. I have audio for radio and GPS.

3. Also, I either don't have, or can't find the area of the setting that allow for "Audio Priority" (I think it was called)

Now as I re-read this, did I upgrade with an older MCU?

Thanks of any help.
[Android Head-Units] aluzjunior:
i think yes. note 4.2.5 is lower than 4.2.13. so you replaced with an old one.
[Android Head-Units] pedalquickly:
I'll redo it tomorrow.. I don't know how I made that mistake..

Thanks!!
[Android Head-Units] jitun:
2.7.29 Luncher

Hi,

Can someone please post the launcher from 2.7.29? Mine came with android 4.2.2 (i know it's fake) and 2.7.26. I don't want to update it as it's working pretty fine. I just need the different launcher coz I don't like the one with four big widgets in there.

Thanks

Never mind: Found the files. Thanks to all the contributors.
[Android Head-Units] aluzjunior:
mine comes with fake 4.2.2 and version 2.7.22

i want to know the diferences between 2.7.22, 2.7.26 and 2.7.29 (android 4.2.1)

here the main screen of my unit, i liked the laucher. but if theres one with better looking or functionality

[IMG="laucher"]https://cdn-images.xda-developers.com/direct/2/7/1/6/7/9/2/com.android.launcher2_7819_(ver.2).png[/IMG]
[Android Head-Units] FeEPro:
BTW: How can I change Color from these buttons on Homescreen?
[Android Head-Units] tomoooo:
Hi,

I have a 2 knob version (produced by ruili).

Update to 2.7.29 was succesfull, I just have the problem to pair the phone now via BT, it does not find the phone and in settings it is not holding the radios description and pin.

MCU version is:

4.2.5-7-10-2501

Additionally I have a message about unauthorized UI always on top I cannot get rid of. My unit is not rooted.

Any idea? Many thanks to all.

Regards

Tomas

---------- Post added at 05:00 PM ---------- Previous post was at 04:58 PM ----------

Have you tried to use Color app provided?
[Android Head-Units] aluzjunior:
Press the "settings " button for 2s. And choose between 4 pre defined colors
[Android Head-Units] cmtas:
I updated to latest torque pro, now problem is gone.
[Android Head-Units] jpapadami:
What is the latest torque pro version that you have?
[Android Head-Units] jitun:
Mine came with four widgets. AFAIK there are three type of homescreens. one that you have and I have attached the other two here
[Android Head-Units] bluetwok:
Any Compatible Firmware available for this Unit?

[MENTION=4346676]Vladimir2k9[/MENTION]

I also have the Audi A4 Unit below also interested in which firmwares are compatible. It uses the MStar Cedric 3 chip

Cant post link but from same supplier.

Shenzhen Sion Electronics Co., Ltd.

7'' Pure Android 4.2 Car DVD GPS Navigation for AUDI A4 with 3G, WIFI, Canbus
[Android Head-Units] brisk5181:
By bluetooth still have problems.

I am on 2.9.96, my MCU is 4.0.6-1-10-0101. can anyone please upload a updated mcu for me?

Thanks!

---------- Post added at 12:13 PM ---------- Previous post was at 11:38 AM ----------

Just called the seller, he will send me a 4.2 update on Monday. fingers crossed...Mine is for a Camry.

---------- Post added at 12:13 PM ---------- Previous post was at 12:13 PM ----------

Called seller, he will send me a 4.2 update on Monday.
[Android Head-Units] cmtas:
I don't know the version, latest on Play. No pausing its great. Starting to work on some special screens now that its working.
[Android Head-Units] pedalquickly:
I updated to MCU 4.2.13-1-10-2101 and Firmware 4.2-2.7.11. I have audio back on my N7 music player.. I am also rooted.

Even before the upgrade and still have the problem with the radio displaying garbled text when listing the song names. sometimes the text is correct, but during the course of a song it is mostly misspelled. Any ideas?

Also, trying to change the radio apk file to one that I like better which I had done before the last update. I can't overwrite the file in the system\app folder?

Any advice? Information is appreciated.

---------- Post added at 07:47 PM ---------- Previous post was at 07:43 PM ----------

Is firmware 4.2-2.7.11 a later release than 4.1.2.7.29?? I have used 4.1 firmware before with no problems.
[Android Head-Units] jitun:
Finished installation with OBDlink

Hi,

I installed the HU in my car. Here is the product I bought from eBay

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=231283262506

Everything works even the reverse camera. I wanted to install the OBDlink permanently in the car but I din't find the power management of OBDlink SX very efficient. Specially if it goes to sleep mode it won't wake up. Or may be torque is unable to wake it up. So I decided to make a circuit that will power the OBDlink when the radio is on and turn if off when the radio is off. or in other words put a relay to turn on the device with signal from the P.ANT wire (as I am using the P.CONT to power the external amplifier). I made a solid state relay circuit based on the chip PS7141 (which I had from an earlier project). Below is the simple circuit I used to control OBDlink SX.

When the radio is off the device consumes only 0.03 microAmps :angel: (leakage current, compare that to 7.3mAmps as described in the official scantool site) and it makes sure that the OBD reader is off for sure. It turns on when i turn on the Head unit. I have installed widgets for torque which runs torque as a service and connects to the OBD reader automatically. Here is an Engine RPM meter on the homescreen.

It's been a long day as I have to make the circuit, install the HU then install the circuit etc etc. Will customize it soon with more torque widgets and stuff. But victory at last :victory:
[Android Head-Units] Vladimir2k9:
How your device work?

I am on VW Jetta. My parktronics not displayed and not all steer wheel buttons working. We have the same processor MST786 but may be another MCU. Version android is not 4.2, it's fake. I want to try android from this thread, but wanted to get our firmware before, for restore.
[Android Head-Units] Blaylock1988:
This is great! Any pictures of the actual cable and relay setup?
[Android Head-Units] bluetwok:
Software is a bit buggy at times. The illumination lights don't go off when car is shut down. Canbus controller doesn't seem to be working well. But otherwise works fine. I don't have steering wheel controls so can't comment.

MCU version I have is Cp_lemon 1.13 May 21, 2014

Android version 4.2

model number full AOSP on Mstar Cedric3
[Android Head-Units] jitun:
Thanks for noticing.

Sorry I didn't take any picture of the actual circuit but I made a video of the relay in the lab before putting it in the car. Here is the video

http://allmyvideos.net/4k3xcz26ynml

For the actual cable setup in the car. I bought an OBD extension cable with a female port. Then I connected the wires of this extension cable to the car's OBD port just how you will make a Y splitter. I connected everything except pin 16 which is the power from battery. That was connected to the SSR circuit which is triggered by the radio's P.ANT wire.

Let me know if you need more info regarding how to build and/or install the setup.
[Android Head-Units] pedalquickly:
I am rooted, but ES File Explorer won't let me check the root option. Says something like my device is not compatible.. Anyone know what I am doing wrong? I also cannot overwrite the radio.apk file in the system\app folder so that I can change my radio.
[Android Head-Units] ljon:
Can someone please link a site / ebay item with a unit like the one or equal to the the one this thread is about? :o
[Android Head-Units] jpapadami:
OK Thanks. Do you have any additional configured settings set in Torque Pro? For example,

1. Menu > Profile. Scroll all the way down and there is a section called Advanced Header which you can choose which OBD protocol to use.

2. What baud rate do you use?

On my dashboard screen I have around 5 gauges. On each gauge there is a green led that indicates if the gauge is working or not. Not sure if you had this problem but sometimes they turn off for a second or two and then turn back on. Someone on the Torque Pro forum said that if you have too many gauges on one screen it can cause them to pause/freeze spontaneously.
[Android Head-Units] vipassana:
locks up the screen and buttons

I have a Hyundai ix35 car radio with the same hardware of the AN-21-U that locks up the screen and buttons, if not for the volume, after using some app (navigation, TV, games, etc). it starts working properly again if I unplug the power, but untill I use one of the apps I mentioned before, then it locks. Do you have any idea or suggestion on what can it could be?

Thanks
[Android Head-Units] 3Shirts:
No 3G on the supplied dongle

Hi,

I ordered mine with 3G dongle and it came with one, the ZTE MF190. I am trying to get it running with a giffgaff sim (which runs over O2 but having no luck. I tried it on my PC and the software seems to only show 'voda uk' when I search for networks. The device isn't locked (I checked in DC-Unlocker) so not sure what the problem is.

I have had a play with the modem at work and it seems ok so I think it was just a weak signal.

I found an old 3G modem in the office too, an unlocked Vodafone K3570-Z which is a ZTE. I'll try both somewhere with known good 3G signal and see what happens.

Update pending
[Android Head-Units] Vladimir2k9:
I have the same version. What is you seller, can you give link. I have telling with my seller and one other, may be can fix some my problems.
[Android Head-Units] Suzook1:
did anyone manage to get an LTE dongle to work with this radio
[Android Head-Units] guano30:
Hello Guys!

I have a Problem with my Unit. Its the 2 Knob One with latest Firmware on it.

I use Poweramp to listen to my Music.

The Problem is, when the Radio already runs and i Power on my Car the Sound of Poweramp is gone from Time to Time.

Sometimes it helps only to switch between Poweramp and Radio and Sound is back.

But most of the Times i have to do a Reset with the little switch over the SD Slot.

I have no Idea why the Unit loses Sound from Time to Time.

Does anybody know a Solution for that Problem?

With the Stock Audio App i never have such Problems...... Only with 3rd Party....

I also tried all Setting in Tone Menu...... Nothing really helped
[Android Head-Units] dasher:
Thanks for taking time to post this suggestion. While I still had the unit I did track down the factory sub and amp. I partially took some panels out in the back of the vehicle and found the amp and sub. I didn't see any obvious knobs. Maybe they we there, but hidden in the back? Getting to the back would have meant fully disassembling the back of my vehicle to pull out the sub and amp. I did not have time for that unfortunately.

One thing I did try while troubleshooting was putting the volume of the sub in the zone settings all the way down as you suggested. It didn't make make the slightest difference for me. The popping was just as loud as when the setting was at the highest level. I would think the popping would get less severe with the sub level all the way down, but it did not.

I really think this unit was defective, hence I returned it. I wish I had time to wait for a replacement to try again. Maybe someday once things quiet down for me. For now I'm back to my stock radio which is working fine with the sub.
[Android Head-Units] ionutlup:
New firmware 2.7.31

Hallo.New firmware

https://www.dropbox.com/s/rjn0crdlupf86s8/V2.7.31_20140711.rar
[Android Head-Units] Suzook1:
bump on this

anyone?
[Android Head-Units] aluzjunior:
Anyone knows how to make music still playing when i change to reverse?
[Android Head-Units] MFKinSINY:
Theres a (system) setting. You have to look for it. I don't mean to insult anyone, but why are so many people not familiar with the available settings/options? After each & every firmware update, I surf through ALL of the settings (first to verify the update) just to see what has changed, what is new, what is gone etc.

I'm not 100% sure, but go to settings and look under audio. If I remember correctly, you check/uncheck an option for "mute in reverse"

It's been a while since I checked any settings so I apologize if I am wrong. Good luck.
[Android Head-Units] aluzjunior:
Thank you and sorry to be so newbie