yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] kaween:
That version is pretty much ancient, and I wouldn't be surprised if the problem occurs just because of that.

"Which version is the best" can not be answered by anyone else but you. Know that in the short 2 month I could play with my AN21-U, I found little to no real difference between the lowest System version I ever used (2.7.9) up to 2.7.28 -at least not in terms of normal, everyday use-.

At 28, the radio app looked completly different and personally, I liked it better. Starting from 29 and upwards, you'll need to root your device to get rid of the "UI warnings".

(In a nutshell).

As for MCU : I repeat what I've said earlier. Make SURE you can find a backup of your original MCU BEFORE upgrading it (file repository, first page of this thread). Once damaged or flashed incorrectly, it is very hard to neigh impossible to correct not because of technical issues, but simply because "you can't flash what you can't find". :rolleyes:

As for the meaning of the mcu numbers, it has been explained on this forum in lengths. But as I'm not a complete *ss, I can tell you that the numbers 4.0.6 (Version number), 1 (hardware version), 20 (Car = Honda CRV or Civic), 0101 (feature list, so you have a TEF662X tuner, a Rohm37534 sound processor and RDS capabilities) mean that whatever you look for, they must AT LEAST by identical starting and including the hardware version number right till the end (feature list).

NOT doing so is potentially dangerous.

And even then, replacing your mcu by a newer one CAN cause issues, so make SURE you can find your current version in the file repository before flashing anything.

Better still : Root it, throw Titanium backup on it, Just to be on the safe(r) side. :angel:
[Android Head-Units] hmosquera:
Thank you friend, but

How can I solve the fail "Android is upgrading" when the stereo boot up?

Maybe i have to upgrade the system..... but i want to have this radio skin...

[IMG="radio skin"]https://imagizer.imageshack.us/v2/481x361q90/661/A044vb.jpg[/IMG]

what is the last version firm that has this radio skin? do you know?

Again thank you for your help :good:
[Android Head-Units] jpapadami:
This is happening because some apps like poweramp or titanium back-up use .obex files to store app data. You'll have to uninstall and reinstall the apps that do, in order to fix the problem. My problem was with poweramp.

If you are rooted, go to /data/app and find which apps use .obex files. Each .obex file is named after the app itself in that directory. That's when you know if an app uses .obex files. Uninstall the apps that do and delete their corresponding .obex files that haven't been deleted during uninstall. Reinstall those apps and all should be good. I would suggest do this one app at a time and reboot your unit each time to determine which app is the culprit.
[Android Head-Units] Cavalier Condorelli:
Modded com.tw.services.apk 2.7.29

I have the same problem, I need the modded com.tw.services.apk 2.7.29, where can I find it?

Thanks.
[Android Head-Units] jpapadami:
The Android is upgrading issue was due to something else. Read post #4806
[Android Head-Units] Miwer:
Hi kaween,

Sorry to hear about your misfortune with your an21u - I guess you don't have much need for this info anymore, but here it is anyway :)

I have a 4.3.2-1-10-6101 MCU (it was included in 2.7.28) - I hope it works out for you, and let me know if you want it, and I'll upload it somewhere.

/Miwer
[Android Head-Units] kaween:
The first time I saw another radio skin than that one was with 2.7.28. I think all versions prior to 2.7.28 will look like the one you have there. (no guarantees ! I'm 80% sure of it).

---------- Post added at 11:26 AM ---------- Previous post was at 11:05 AM ----------

Hello !

Nono, just keep it coming

But I already had that and it DID NOT fix my EQ problem, strangly enough.

From what I read here, I was almost certain that going back to a -1-10-6101 SHOULD repair the EQ issue, but to my surprise it did NOT. The EQ problem remained. Odd thing is, with a -7-10-6501, the EQ DID come back to life and worked as intended. I was absolutly convinced it would work with that version of yours too and as the problem can be rectified with another (wrong) EQ, the solution MUST be found in that MCU-that-isn't-supposed-to-have-existed (4.2.5-1-10-6101). :rolleyes:

As for "no need for the info" ... oh I don't know. I'm currently debating the purchase of a new unit, and it will be between the AN21-U (again, as I don't see too many horror storries from other users I guess I just had bad luck with mine) or a KGAC-7630 Huifei.

I would prefer the Huifei honestly purely based on hardware platform, but it depends how much I must do to get it fitted as I'm not too keen on cutting my dashboard to allow for the bigger opening that I need for a Huifei. Still waiting for that info from my NEW seller (android car-audio) who has so far been very helpful and very open about his products.

I also played with the idea to replace the mainboard myself as it really isn't that hard to do, but sadly the only seller I could find offering an AN21-U mainboard (Aliexpress) never responded on my questions.

But I wouldn't be sad if I end up with a Thongai/AN21 in the end again : I very much liked the soundquality of it (before my EQ went byebye), I liked the screen quality (God I only now see just how dark the screen of my S150 is), the SWC was a breeze and worked perfectly even in 3th party apps, it ran all the software I wanted and had 2 camera inputs AND a DVB-T running at the same time .... and most importantly, the GPS based Volume Speed adjustment really did work ! So I'm not going to say the AN21-U is a bad or weak unit. I guess just MINE is. :(

Ah well, we'll see. But I'm not going to drive my S150 for a very long time anymore, that's for sure. It's like I'm permanantly am wearing sunglases when I look at that screen. :)

ONE bit of saving grace of the S150 : they way it was able to have a "system wide mixer", where the user can define each sound volume of each input/device (radio, GPS, App, Aux, BT, DVB-T ....) independant of each other is something I miss dearly in the AN21-U. Also, the fact you could boost the external Mic of the S150 in 3 steps was something quite unique compared to other units.
[Android Head-Units] bluemask69:
is here some people who bought Sion (szsion) SA-703 (this is for Audi A3 but different number are for same model in other car brand) with Soc MS786 dual core ? Specs are: screen capacitive ips 1024x600 1 gb ram 8 gb rom
[Android Head-Units] kaween:
There's a specific thread running on those machines : http://xdaforums.com/android/general/szsion-dual-core-a9-android-4-2-t2806857

I myself have looked at the Sion, but was advised again going for that model by my seller who had a some issues with Sion concerining aftersupport.

If you do : Sion claims "full start out of sleep in 2 seconds". Can you confirm this ? (in case you're an owner ?)

On the brighter side (at least for me), my new seller has send me a proposal/message that I need to think long and hard about. In short, they are offering to build a Huifei into a unit with a different front that would allow fitting of the Huifei without having to cut up my dashboard. I was very tempted to immideatly say "yes", but I had a couple of questions about the viability of that offer.

Then I took a look at the Huifei part of the forum again, and I wasn't all that happy with what I read there. After the great strides they made (unlocked device, rooted, lots of extra software to solve shortcomings and add extra features), I now see a lot of "wifi unstable with version X, Radio Tuner crashes with version Y, SWC or Light control not working with version Z).

Put that against the AN21-U (which when it worked, worked 100% stable) and see that many of the app's written for the Huifei are solving problems that my AN21-U never had (Speed dependant Volume control : out-of-the-box. SWC control in 3th party : out-of-the-box ....) ... causes me to dampen my initial good impression about this device.

On top of that, out of the blue, I also got contacted by a supplier offering a spare mainboard for my defective AN21-U, New hardwareversion, BC6 included. So suddenly repairing it myself may still be a viable alternative.
[Android Head-Units] calledman:
Still cannot root this unit

I still cannot root this unit to remove the red UI warning. Baidu says it is rooted but when I try to copy the apk file to App folder.. I get the warning in the picture..

Any help is appreciated....system version is 2.7.35
[Android Head-Units] kaween:
Please check root status with any appropriate tool (root checker ect ect).

If they too state the unit is rooted, it is.

I've had such odd behavior on several other machines too where Root Explorer ect... still would fail occasionally.

My advise (if unit IS rooted) is to install Total Commander (free) and try it with Total Commander and see what happens.

Rename the original APK first. Then copy. If it doesn't "take", try again. Reboot unit. This worked for me before my AN21-U failed.

It also has helped me out countless times where one of my other 'droids refused to play nicely when plaing at root level.
[Android Head-Units] Skratchuk:
2.7.38 final

Not sure if this has been posted but here is 2.7.38 final firmware courtesy of 4pda.ru

https://yadi.sk/d/pZQq74RUaJ3CS

I have not tried it myself yet but i will report when i do.
[Android Head-Units] cool_head:
This firmware contains third party advertising in form of logo "RP" (RedPower, local russian brand)..
[Android Head-Units] Skratchuk:
So its the same as 37?
[Android Head-Units] balaes:
You have "Seperuser" installed ?
[Android Head-Units] calledman:
yes, I have superuser installed and it is asking for permission but whatever I do , it still gives an error message and fails to complete the job.
[Android Head-Units] Skratchuk:
What firmware are you using, how did you root (what software did you use)
[Android Head-Units] cool_head:
I think its the 37 with branding..
[Android Head-Units] calledman:
downgraded

I have finally got rid of that stupid red warning by downgrading the firmware to 2.7.28...

I don't like the UI in this version but at least no red warning ...
[Android Head-Units] Zaphod-Beeblebrox:
Make /System RW

you have to make sure /system is mounted as RW (read/write). It defaults to being mounted RO (Read Only). Depending on what file manager you are using, there should be an option (possibly in the menus) to re-mount /system as RW. I typically use RootExplorer and there is a small button near the top of the directory listing when you are in /system.

After mounting /system as RW, copy the file over, re-mount as RO and reboot.
[Android Head-Units] kaween:
Golden nugget at Huifei forum ...

for anyone using Poweramp that is. THIS might make me switch from Rocket Player to Poweramp.

http://xdaforums.com/showpost.php?p=53964813&postcount=1461&nocache=1&z=4548790198750794

I tried this on my Phone as my AN21-U can't be booted at the moment. It's clearly not hardware dependant, as it works on my phone too.

It is bloody brilliant : it shows a little poststamp size cover art + performer + track name as overlay on for example your navi program for sometime between 3 and 10 seconds of the track poweramp is playing in the background. As it works on my phone, there's no reason it wouldn't work on the AN21.

Try it and get back with the result as I sadly can't check this for the moment

Kudos to "Agentdr" for producing this and making it available for free.
[Android Head-Units] hashman:
hi

some of you have mentioned that they have plugged in a battery pack as they don't like the unit shutting off and on when the ignition is turned.

Can anyone who has ventured into that provide wiring details and what battery pack was used?

I would love to do that; especially if any customization can help the boot times too.
[Android Head-Units] homenhuck:
Locked on boot screen

Hi,

I recently acquired an TH8686, today for some reason the unit stopped work, freezes on the android boot screen.

There is no recent app installation, and I already tried to do the reset using the pinhole on the equipment.

Can someone point me to the correct direction of how to solve this issue?

Thanks in advance
[Android Head-Units] Zaphod-Beeblebrox:
I've been using this one;

https://play.google.com/store/apps/details?id=com.domloge.mpopup

It should work with all music players, not just Power Amp.

It's not as pretty, and in my case (I do use power amp), it's not picking up the album art, so I'll likely try the one you suggested.
[Android Head-Units] wheniclick:
UI error apk copy fix

I had same problem,

Use ES file explorer, go into Menu > Tools and turn ON "Root E"xplorer and "Show hidden files".
[Android Head-Units] Naumenco:
2.7.35

In 2.7.35 only one way to temporary root using Baidu Root 2.4.6 (not 2.4.7 or other)

Root will work until rebooting :(
[Android Head-Units] Blaylock1988:
I've been using the paid poweramp since I bought my AN-21 and love it. I've been looking for a little widget like that, thanks for posting it. I'll try it out tomorrow.

---------- Post added 2nd September 2014 at 12:15 AM ---------- Previous post was 1st September 2014 at 11:18 PM ----------

Have any of you guys seen this variant with the flush screen for Volkswagen? I'm pretty certain its an AN-21 U, just with a different front panel. I don't remember anyone mentioning this one yet.

[YOUTUBE]k00010oZKFU[/YOUTUBE]

I like my knobs but this one looks sexy as hell.
[Android Head-Units] mano154:
Hello, is there a way to increase the volume increments for more fine-tuned sound control. Thank you.
[Android Head-Units] hashman:
Hi

I have another twisted problem

Having checked the search of the thread, many people who had my problem were suggested to swap their 'yellow' and 'red' power cables... But... Here goes:

My issue is that after every shutdown (i.e engine off for a few minutes) when i turn the power on in the car- the radio shoots up at 87.5FM

It does not go to last stock app (ipod or misic or dvd... Regardless) not to last tuned station

I dont loose any settings or fm/am presets but its the frustration of hearing static, at 15 volume every single time

So i opened up my unit last night to see these yellow/red wires

I should note that i have a peugeot 508 custom model so the cabling includes the canbus

Well here is how my wiring was:

One yellow wire coming from the car's original connector (which has no yellow or red wires! Typical french)

The yellow wire splits in two, one goes to the B+ connector (see pic) and the other to the canbus

The ACC wire is red, but its coming from the canbus

So both wires, as per my logic, would be powered by the yellow cable? Or am i wrong?

Is there a solution or am i stuck with a faulty designed unit?

Thanks to all the helpful people

This is my last attempt before i consider / attempt the picoups route.
[Android Head-Units] oohsam:
Hey Guys,

Read all the posts, and I'm having trouble. Thought it would be a breeze. Just got my unit today. its the 2 knob, 8 button unit.

Basicaly, I formatted a sd card, put the two files on it from 2.7.29, reset my unit and pressed volume knob and menu. That takes me to the android recovery screen. I select "install updates from sd card", it throws an error (goes too fast to see the error" then boots normally.

Files in are in the root of the sd cand sd is fat32 formatted.

Then I tried the "root my an21" process.

When I install the apk I get through the wizard to instal the apk, then i get "App Not installed".

I also dont have an update firmware option in the menu.

Here are some screenshots of my system. it seems as though I'm on a newer version than everyone else...maybe this model can't be updated?
[Android Head-Units] kaween:
As far as "french car with no red or yellow wires", I'm not sure that's typically french. My car's French of origin, and has definitly the Red (Switch) and Yellow (Bat) cables, and Black as ground. And that's about the only thing you can count on in terms of wire colors.... :)

The only thing I can suggest is simply measure what goes on there : remove the radio, measure on your so-called yellow and red cables. If they don't behave, BOTH will go to 0V eventually. You write "after you shut down the car for a couple of minutes". It MAY be that the original unit can be used without ignition key for a certain, determined time during the needed voltage will be presented (mostly that's 10 minutes, sometimes 15) before the car's logic shuts down that power line to ensure your radio doesn't stay on by mishap.

If after given enough time, both lines go to zero, the only solution I see is that you modify your loom and add a true 12V constant to ensure the memory retention of your AN-21.
[Android Head-Units] Kidmet:
Hooked up a USB OBD adapter to the front and now it doesn't turn on, no lights, nothing. Anyone ever have this problem?

---------- Post added at 11:00 AM ---------- Previous post was at 10:58 AM ----------

Did you replace your board? Where did you buy a new board?
[Android Head-Units] kaween:
... or your unit is NOT based on the AN21. I've never seen "amplifier" nor "driving safety" on my AN21 ...

Just a thought.

---------- Post added at 07:08 PM ---------- Previous post was at 07:03 PM ----------

I ordered mine here : h t t p://www.aliexpress.com/store/product/Android-4-1-Motherboard/125171_1623235987.html
[Android Head-Units] AlexP3:
Stuck android boot logo

Is this the same model?

http://www.aliexpress.com/item/2din...ore-1GHz-CUP-Capacitive-Touch/1848792947.html

Mine is suddenly stuck at bootlogo without doing anything to it...
[Android Head-Units] Kidmet:
How was it to install? Difficult? Steps?
[Android Head-Units] vipassana:
Hi,

my radio freeze sometimes, now can not boot, I don't know why but maybe the problem is hardware, should I replace the mainboard? I tried to send an email to Tonghai but I did not respond. Thanks
[Android Head-Units] kaween:
I'm still waiting for it, it has been send out and it's on its way.

If it's anything like my previous S150 it should be pretty straightforward. I'll take some pics when I repair mine.

---------- Post added at 08:03 AM ---------- Previous post was at 08:00 AM ----------

... I believe it is the same model (discless).

---------- Post added at 08:07 AM ---------- Previous post was at 08:03 AM ----------

Try a factory reset before doing something else and double check your voltages.

Strip the unit of all unnecessary connections (remove USB dongle, memory cards, .... just keep power, battery and speakers). If it sill doesn't boot then at regular times, and a android update doesn't help either, chances are you're stuck with a defective board. Mine did the same : freezing/not booting, gradually becoming worse till the point where it became unusable. I'm pretty sure in my case it was temperature-induced : sometimes the only way to get the unit to boot was to put it in the refrigirator for a couple of minutes (no joke). System fan would blow from the first second, but that didn't help.

When I repair mine, I'll look into the possible issue of overheating on these units (mainly the Android daughterboard) and see if it can be prevented somehow. I know heat can be an issue on these types of units : at the Huifei forum, there's even a mentioning of it on the first page, stating the situation where the Huifei fails to boot at high temperatures too.
[Android Head-Units] Zaphod-Beeblebrox:
Agreed. Looks more like HuiFei:

http://xdaforums.com/showthread.php?t=2660662
[Android Head-Units] AlexP3:
Can someone tell me wich files I need to use to flash the radio (discless) . It is stuck at bootlogo.

I can hear the radio playing as soon as power is on. I didnt root or anything, it just happened. Its now 2 months and I dont know what to do.

I tried the pinhole reset a million times and still nothing :(

Thanks
[Android Head-Units] wanxu:
Hi, I'm actually buying this one. It's Audiosources D90-9001: http://www.audiosources.net/prod_view.aspx?TypeId=50017&Id=191&FId=t3:50017:3 Here you can see another video they sent to me: https://plus.google.com/u/0/104223325112843516551/posts/9HVgsToXHT8

I think I will be coming to this thread soon :D
[Android Head-Units] Skratchuk:
Hi Alex try flashing http://androidstereo.mobile.eu.org/firmware/android-4.1-2.6.60.rar to see if that sorts it out then flash to the version you want after that and let us know how it goes.
[Android Head-Units] vipassana:
Thanks, I tried everything but nothing. I'd like to buy a new board, where can I buy one? The mainboard you posted on aliexpress is very similar but there are differences...
[Android Head-Units] kaween:
You will be hardpressed to find EXACTLY the same board that you have.

The "big board" (essentially the mcu-the Blue PCB you see on the picture) has gone through various hardware revisions already if you look at the numbering of the MCU-hardware revision codes. It wouldn't surprise me that even the Android Cedric board comes in various versions as I've seen the AN21 based designs being stated with a 1.4Ghz CPU in the newest models.

Finding the exact same one as you originally may only be available by grace of your original reseller. Everyone who's bought a replacement board states "there are differences", but so far I've not seen anyone complaining that it would make a repair impossible.

I was told (for what it's worth) that the board on sale at "Ali" is a new board, recent HW revision and it comes with a BC6 BT module (the one that permits you to do OBD over BT).

I'm anxiously awaiting mine to arrive, and I'll post my experiences and possible problems I encounter with the repair.
[Android Head-Units] AlexP3:
Thank you a million times!!!!! You fixed my radio!!!!
[Android Head-Units] Skratchuk:
No problem that's what we are all here for [emoji106]
[Android Head-Units] ZexGX:
I just purchased a headunit which I believe is the updated version of the AN-21 U (or maybe Szsion), because of the feature list and specification list. They claim it works with Bluetooth OBDII devices and their Bluetooth TPMS sensor system. Here is a link: http://www.aliexpress.com/item/-/1949646832.html

I also purchased the DVR camera for it... Will let you know more info when the unit arrives.
[Android Head-Units] kaween:
Looks nice ! And looking at the specs, you're probably right.

Hope it will serve you long and well. Be sure to give us some feedback !
[Android Head-Units] cool_head:
I've ordered the same board at the same seller that you've bought and it came defective. The GPS was faulty. At the time (already passed a few weeks) the seller don't want to assume responsibility because he's telling me that the board was tested.. I've opened dispute in aliexpress.. Be careful with the seller.. He's a crappy guy..
[Android Head-Units] kaween:
That s***s big time. Sorry to hear that. I've repaired 3 android units so far (different devices, same type of repair) and indeed, most of those sellers even warn you upfront that "their boards are 100% tested and that non- functionallity is basicly your own fault". So far i've always been lucky but that luck is bound to run out sometime too. :(

Keep us posted as this is the kind of info we need here. What are you using now ? Alternative route ? Other device ?
[Android Head-Units] Ruprect:
Google Play Muic issues?

After installing Google Music I have discovered that tracks downloaded to the ext sdcard have issues with continuous play.... i.e consecutive tracks in a playlist will constantly stop after forwarding to the next song. Anyone else had any joy in ironing out this bug:(

SYS: 2.7.29

MCU 4.2.13-1-10-2101
[Android Head-Units] Journeyman91:
Would like to buy this one too.

Assuming it really is the next level version of the one in this thread I would like to ask some short questions:

1) Is it possible to use your steering wheel buttons (Alfa Giulietta here)? If so, any addtional purchases needed?

2) Is it possible to use google now and google maps? Even with speech control such as "Ok, Google"?

3) How to set up this whole thing to start with engine start? And what about "Start-Stop" Automatic?

Questions over questions... sorry guys, but I'm pretty new to this topic!

Bests