yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] kaween:
You'll have to look elsewhere for gurus. and you'll have to do with humble me so it would seem. :)

1) Hm. Never heard of that before. What navi software are you using ? Shouldn't have anything to do with it, but still. You also may have a closer look at the settings->button definitions. Maybe something got crosswired in those definitions causing this. Look for actions tied to a "next/previous" funtion.

2) If you've got a modern car, chances are the antenna circuit has a build-in signal amp. That circuit needs power (12V Antenna wire coming from your radio). Is that wire connected with your new unit ? If not, it would explain the worser reception. Some users have reported a cold solder joint at the level of the FM-antenna tuner causing very bad reception too.

For me, I can honestly say the reception of my AN21 is at least on par with my factory unit which had a REALLY GOOD reception, far better than any factory unit I've had before, and it is totally superior to my previous droid headunit (S150 based). The Philips Radio Tuner chip in these units, although not high-end is certainly not the worst FM-tuner chip on the market so it should perform decently when all other connections are done correctly.

---------- Post added at 09:59 PM ---------- Previous post was at 09:45 PM ----------

Honestly, the first guy you mentioned fried his stuff 'cause he wired it wrong. Broke the first rule doing anything anything yourself : "meten is weten". Simply said, if you don't double check your mods before powering it up, you might wonder how on earth you missed reversing polarity on your power supply, but by the time you witness the feared "smoke and a puff", it is too late of course. :)

If your wiring is correct, you will not blow your unit. Period. No matter what USB hub you use. I've used a bog-standard lowcost USB powered hub for some tests and it just _worked_. Can't imagine what kind of trouble you'd have if you simply double check your wiring work and TEST and MEASURE your voltage BEFORE hooking it up to your hub-or-what-ever. :)

I've not heard about that "retrograde voltage" but it's perfectly possible a powered hub will send a "5V upstream" which would be there even when the radio unit is shut down. Solution ? You can use the numerous "up when radio active" signal lines (P. Amp control, P. Antenna ....) to steer a microrelais that enables power to the hub only when the radio is working. Should be very easy to implement. But not all USB ports like it when they are FIRST connected to the DATA port, and the power for the circuit comes up AFTERWARDS (which would be the case with the relais solution).

In fact, this breaks the basic rule of USB operations so I'm not convinced you're not better of letting the USB power on a constant 12V supply. (V+ Bat)

You can see that in any USB cable/memory stick/whatever : the outer contacts are longer than the inner ones, making sure that when you plug or unplug your usb cable to your pc, the POWER is the first to come and last to go. :)
[Android Head-Units] makkan00:
Good Question and here we go;

Android 4.2.2

MCU version: 4.3.1.2-7-10-6501

System Version: 2.7.22

---------- Post added at 09:21 PM ---------- Previous post was at 09:16 PM ----------

Thanks for sharing your knowledge.

re:

1) I will check it. Its not the navigation alone. Its evident in settings and other menus. It appear as if screen acts like invisible remote. You click on the screen and sometime it change the track to next and other times to previous one.

Chinese vendor is unable to help.

2) My car is not modern at all. It Toyota Yaris / Vitz and I have already connected antenna amplifier wire.

It is still poor.

So shall I dismantle to see if it has poor soldering?

Thanks.
[Android Head-Units] cbergs:
I have the same system 6.2 "Universal Android4.1 TH8685

I have not tried any changes other than rooting it with Badiu root and needed a Meta Axxess kit for the steering contols to work in my 07 Canadian Ford Focus. I would like updates but am having trouble

getting them from my supplier I have B-Scan and a provided OBD II reader but the bluetooth does not work well with it. it always needs to be paied on startup for obd II and often it dosen't work mcu is 4.2.15.2-1-10-2101

system version 2.7.9 dvd 2.13.13-860mc

Any info would be appreciated

Thanks cbergs:o
[Android Head-Units] kaween:
Honestly, I'm surprised you got that far in the first place.

To my knowledge, there's no way to get BT OBD working correctly with a build-in BT interface with anything else than a BC6 BT module. As your MCU shows "2xxx" as version -so it's clearly a BC5 or comparable-, I don't think a stable OBD BT connection is technically possible with the build-in BT board you have.

---------- Post added at 10:25 AM ---------- Previous post was at 10:18 AM ----------

If you can open the device without breaking the warranty seal (look at the AN21 tear down a couple of pages back), you've got nothing to lose I guess. If not, I'd advise against doing so and you're better of trying to deal with your supplier. What I find strange : is the reception "good" when the car is NOT moving then ?
[Android Head-Units] heaky:
Firmware 2.7.39 com.tw.service_a5a4.apk

Hi all,

Running firmware 2.7.39 and already flashed another com.tw.service_a5a4.apk from this thread, red message is gone, but the hardware buttons are not functioning.

Does someone have a working version for 2.7.39 or instructions how to modify the original apk?

Thx!
[Android Head-Units] jpapadami:
Modded 2.7.39 com.tw.service_a5a4

https://www.dropbox.com/s/6azz8teojq...39].zip?dl=0
[Android Head-Units] heaky:
Thx, but the link is not working...
[Android Head-Units] jpapadami:
Wired. Was working when I posted it. Anyway, here's one from my dropbox

https://www.dropbox.com/s/vot2n01g7uqm5im/com.tw.service_a5a4[no+red+ui,+2.7.39].zip?dl=0
[Android Head-Units] foggydew88:
Hi,

my unit is a DVDless 4.1 from Infidini, firmware is updated to 2.7.9 (firmware received from store).

I still have problems with bluetooth dialer app, I mean that the paired phone not always autoconnect to my unit, sometimes (more less 1 in 3) the dialer freeze and I must reboot the radio to have it working.

If someone with a newer firmware could be so gentle to extract com.tw.bt_305c from /system/app I may try to use it aand share my experience, is someone alse got these problems too.

Thanks

Inviato dal mio HTC Butterfly s con Tapatalk 2
[Android Head-Units] heaky:
This 'com.tw.service_a5a4.apk' is not working for me on firmware 2.7.39. Red ui panel solved, but hardware buttons not working anymore. (buttons works on this firmware before replacing the apk).

I attach the original 'com.tw.service_a5a4.apk' from this firmware, somebody knows how to patch this?
[Android Head-Units] storm83:
Lol I realized I was being a derp a little after I posted that and saw the second uncompressed zip inside the other zip (Pontiac_Glow). I went ahead and put that in the boot animation folder and set permissions and selected it from the app and still just the regular android boot logo :/ I must be doing it wrong still. Does the PNG also have to go somewhere for the boot animation as well? I assumed it didn't and that was just for a first boot image and not for the animation afterwards?
[Android Head-Units] ZexGX:
Not sure what's wrong - the file I uploaded should be the same one that is working in my headunit. Maybe try copying/downloading it to the headunit again and re-assigning it using the Boot Animation program? You can try to check the desc.txt file in the Pontiac_Glow.zip and make sure there is an extra blank line below the text - that is what I was having black screen problems with for a while while building it, but the release file should be correct.
[Android Head-Units] makkan00:
I cannot open the unit without breaking the seal on the unit. I am in touch with seller to seek support. It will cost me approx $100 to send the unit back.

Does anybody know why would reception goes bad when car moves? It does not happen with OEM radio though.
[Android Head-Units] storm83:
I will play around with it some more and make it work!... Because that is too awesome not to have for my car! Thanks making it and trying to help as well.
[Android Head-Units] foggydew88:
Did you try to reconfigure the frontal buttons on the dedicated menu?

Inviato dal mio HTC Butterfly s con Tapatalk 2
[Android Head-Units] heaky:
Firmware 2.7.39 is no success. Serveral 'com.tw.service_a5a4.apk' files tried and edit the original myself, but when replacing te apk, the hardware buttons not functioning anymore. Found a nice patched firmware version 2.7.38 (V2.7.38_20140811_800X480_SYSTEM_ZHC2), works perfect out-of-box with no red warning, but really ugly home buttons.

Somebody with a solution? What is the latest firmware we can use with no warnings and where can I find the files? Always used the respository on http://androidstereo.mobile.eu.org/ but is there another one with updated files?

Thx!
[Android Head-Units] Simmeon1:
Had an issue where it would get stuck on the android logo.

Tried to downgrade.. using android-4.1-2.6.60.rar

androidstereo mobile eu org /?dir=firmware

Now its shows a black screen on bootup now it does not show the android logo or do anything..

Anyone?
[Android Head-Units] TimelessNL:
Hey, can someone maybe upload the color app for me? because my unit has RGB led malfunctions and does not have the Color app to try other color combinations than the preconfigured 3 colors.
[Android Head-Units] cool_head:
New update 2.8.3 available: https://yadi.sk/d/wPDAG-Djbhgxx

I don't have any unit to test it , so try it and give a feedback.

cheers.
[Android Head-Units] makkan00:
Can somebody help me with steering wheel connections?

My car is Toyota Yaris (known as Vitz in many countries). It has steering wheel like this.

[IMG="steering wheel"]http://carphotos.cardomain.com/ride_images/1/2774/3241/6934120026_large.jpg[/IMG]

And here is the wiring schematic of toyota for this steering wheel

So I have connected

SW ground to the earth of this unit.

SW1 to steering wheel wire 1 of this unit.

SW2 to steering wheel wire 2 of this unit.

Now when I go to the settings in the unit to set the recognition of these buttons, these buttons register as a single button.

Here is my findings;

Volume up / down / Next track / previous track (All these register as 1 button and does one job)

Mode is being registered as 2nd button.

My question: Is there a way that I can set it up correctly as Toyota had it?
[Android Head-Units] mtresk:
Try to change sw1 and sw1 pins.
[Android Head-Units] makkan00:
Here is another problem....

I go into settings or menu and if I click on the screen, it changes the tracks or radio frequencies.

http://youtu.be/VU6FH3iyaww

Anybody encountered this problem?

My android version is

4.2.2 (I read somewhere that its false representation and mine is still 4.2.1 based on system version)

MCU: 4.3.1.2-7-10-6501

System Version: 2.7.22

Thanks.
[Android Head-Units] mtresk:
Update your HU to latest firmware

http://youtu.be/VU6FH3iyaww this one with big icons at the bottom, just like yours.

https://yadi.sk/d/roKcDhZ5bhnXV that one with more accurate small icons.

And don't forget to update mcu by choosing you car in additional settings.
[Android Head-Units] makkan00:
Many thanks for quick reply. I think your first link is linked to my youtube video.

Sorry for the noob question but how do I update the firmware?

On the first page of this thread, it gives me different firmware but its not mentioned how to update the firmware?

Apologies If I am not looking at the right place.
[Android Head-Units] mtresk:
Sorry https://yadi.sk/d/Wxtdebwdbhs87

Just put the files from archive on sd cart and insert in gps slot. Then update system from settings.
[Android Head-Units] makkan00:
Many thanks.

Reading on page 1 and going through my version, it states that mine is 4.1 android.

Would there be any problem if I update to 4.2 (the versions which you mentioned)?

Thanks.

Once again, apologies for noob question. You advised to update MCU as well. Do I need to download specific files for that as well?
[Android Head-Units] easyguy:
Is that statement still true?
[Android Head-Units] mtresk:
This is fake 4.2. No problems. At first, I advise to try the firmware with large icons. The one to which I gave the link again. mcu is installing with the firmware but it needs to be updated in the advanced settings.

---------- Post added at 09:10 PM ---------- Previous post was at 09:08 PM ----------

Yes, still true :)
[Android Head-Units] makkan00:
Last one, do I need to root the unit to update to the firmware which you mentioned?

Reading here;

http://xdaforums.com/wiki/Tonghai_Create_AN-21_U

Under FAQs, last 2 lines suggest to root the unit

Thanks for your help :good:
[Android Head-Units] mtresk:
No need to root.
[Android Head-Units] jpapadami:
Anybody try the new 2.8.3 firmware that has been floating around? Can you root it?
[Android Head-Units] makkan00:
Ok update my version and MCU to

Version: 2.7.38

MCU: 4.3.5-7-30-6501

System seems faster. Also my mobile alert chimes go to headunit now.

However original problem still persist. When I touch the screen, it changes the stations. Again as previous, its random. Sometime it changes it and other times, it does not.

Any other suggestions?
[Android Head-Units] gpmg762:
I watched your video, seem like the radio app is still listening and reacting to onscreen input eventhough it is running in the background. I recall there are copies of the radio app posted previously, you can give them a try but remember to backup your existing radio.apk (root required).

http://androidstereo.mobile.eu.org
[Android Head-Units] ZexGX:
Did you get it to work? Been working fine for me... I have been thinking about making a simpler one totally from scratch. Here is what my homescreen looks like, too. The background is a dark gray (will eventually match the OEM headunit plate color):

I tried 2.7.42 and it didn't work for me (too many bugs), so I went back to 2.7.38 and modded the home screen buttons by decompiling the APK using TickleMyAndroid, editing the PNGs with Photoshop by overlaying a rounded rectangle shape with a 20px(?) corner, then recompiling the APK. I made mine look like this to match the other factory switches/buttons in the car:

Let me know if you want the APK. I don't remember how I signed it and I definitely did not zipalign it, so you may want to play around with it a bit to optimize it.
[Android Head-Units] cool_head:
Hey guys i'm back in the game.. i've changed the daughterboard from an old main board and everything looks ok now besides the dvd drive that is dead... weeeee
[Android Head-Units] makkan00:
Many thanks for the input.

It happens in radio, built in music player and BT streaming.

All of them do it and its very random. I must say that after updating the version and MCU, it is less frequent but still there.

Is there a way to calibrate the touch screen as that may help.

---------- Post added at 08:06 PM ---------- Previous post was at 07:59 PM ----------

That looks nuts.

Is there a way that you can develop it in your custom ROM?

Also, few pages back I have seen a video of you playing with your music.

Which music player application are you using?

And is there any application for BT streaming which can show the album art or at least the title info on the screen.

Thanks.
[Android Head-Units] ZexGX:
Thanks. I have no idea how to make a custom ROM for these. As far as I know, it's not possible.

Wasn't me. Sorry. You might be confusing me with the guy who has a Grand Prix.

The widget on the homescreen controls PowerAmp.

I have no idea. If you find out, be sure to let us know!
[Android Head-Units] MileHighClubAV8R:
Jeep Logo Boot Animation

I created a boot animation using the Jeep logo. The video file I used to create the boot animation is found here, so you can preview:

http://vimeo.com/53623076

On my system, it plays through one complete time and comes right up to the home screen. It's great! I hope someone else enjoys it as much as I do.

Here's where the .zip boot animation can be found:

http://s000.tinyupload.com/index.php?file_id=35408820232181910193

I would have attached it to this reply, but it is too big at 24.5 MB.
[Android Head-Units] gyaku_setsu:
Anyone seen this guy yet?

[IMG="AN-21 U For Volkswagen New Version"]http://xdaforums.com/attachment.php?attachmentid=2955136&stc=1&d=1412050776[/IMG]

(Can't post a link yet, but google search autopumpkin and look in Car DVD Players>Android DVD Player>VW Android DVD Player... its in there at the end of the list)

Looks like it is running the same AN-21 U specs, but in an entirely new form factor without physical buttons and with capacitive controls for volume, power, home and back. Also, no disc player (which I don't care about in the slightest... I'm a digital media file guy) and no visible SD card slots. Just USB. Has built-in WiFi, has built-in Bluetooth with OBD (according to the description) and comes with SWC/CAN BUS adapter.

I just bought this guy and have been perusing this and related threads for days waiting for it do come so I know everything possible about this particular system.

From what I can tell, this unit is very new and might have an entirely different MCU firmware due to its different peripherals, though it may be exactly the same... only time and actually having the unit will tell. Anyone else have any experience with this super sexy-looking stereo? Any quirks specific to this model I should know about?

A couple of questions that I promise I searched for and couldn't find a definitive answer to:

Does editing the keyboard layout .kl files make steering wheel buttons work with non-stock apps?

If not, can you remap the SWC buttons to launch an app? If so, has anyone tried using Tasker to create a small app that only emulates the 'MEDIA_NEXT' media button event and mapping their SWC button to it?

If so, does that 'MEDIA_NEXT' media event make it so you can't use the SWC buttons to control the stock music apps, or would that event work with them too?

Any luck changing the default docked icons in the home screen, or am I going to have to use a different launcher?

I'm sure I will have more questions once I install this, but for now, this is all I am worried about. OBD functions don't matter much to me and I am pretty sure everything else I have read about that is strange with the unit is workable to be a good experience overall.
[Android Head-Units] Zaphod-Beeblebrox:
1 - Don't need to edit keyboard layout. My SWC works fine with non-stock apps (at least PowerAmp ). All you need to do is start up the radio, long press 'back' to exit the radio and Next/Play/Stop, etc will work with any foreground app. Basically any 'stock' app takes precedence on the key controls, but once you close out of the stock app, other apps get the key events.

2 - See 1

3 - See 1

4 - There are a couple of Launcher variations floating through the different firmware versions. I myself have always just run Nova. I don't get the 'widget' buttons that way, but quite honestly, they were useless for me. I use PowerAmp rather than the built-in SD player, and a music visualizer Livewallpaper. I run Waze as my primary NavApp, and Copilot as a backup (for when I don't feel like tethering to phone, or in an area without good cell coverage).

While I'm constantly looking for little ways to tinker, and the fact that we can't load a custom rom irritates the crap out of me, this particular setup just basically works for everything I need.
[Android Head-Units] wanxu:
I've bought this one: http://www.audiosources.net/prod_view.aspx?TypeId=50017&Id=191&FId=t3:50017:3 I think it's the same.

I will post first impressions when it arrives!
[Android Head-Units] gyaku_setsu:
Seems clumsy. What would one have to program Tasker to do in order to automate this and not have to hear the radio every time the device boots? Does long-pressing the back button just kill the app process, or is it like hitting the normal android system back button a couple times until the app closes? Does this workaround, by chance, work with the AUX, media player, or bluetooth audio stream apps (i.e. apps that could easily be silent if they were to simply be loaded at boot and kept running harmlessly in the background)?
[Android Head-Units] bencyp:
USB FlashDrive

Hi,

I have been playing with this unit since last two months. I have couple of problems which I know many are facing.

1. When I crank the engine the sound/audio fails on third party application like n7 player.

2. Poweramp application does not see the USB flash drive so stopped using that.

3. When I insert a 32GB USB flash drive, the moment n7 player scans the drive for songs I get a message that External mass storage disconnected. This keep repeating till I remove the USB flash drive. Tried this with two different 32GB flash drives.

However, if I put a 1TB USB HDD everything works fine. so I am sure its not the power problem as USB HDD will consume more power than a flash drive.

Right now, I have copied all the mp3 songs on to the 32GB SD card and it works all fine.

My Next step:

To disconnect the power supply to the MCU and put a capacitor (Higher value) so that the voltage to the MCU does not drop when the engine is cranked. I have already placed a small capacitor along with diode to provide power signal on the Red wire. The Red wire will momently drops the voltage to zero when the ignition key is moved.

I was also able to connect an external mic through a jack from back and the audio from the external Mic is very clear than the inbuilt one.

I DO NOT want to upgrade/degrade the MCU firmware as I have read so many people facing some or the other problems after the upgrade/degrade.

I will be more than happy if anyone can help me out in the above three points.

Regards,

Ben
[Android Head-Units] wanxu:
By the way, is there a way to make a full backup of the unit? it's the first thing I wanna do, even prior to root it...
[Android Head-Units] j2gifted:
Can you provide instructions on how to connect an external mic? I would love to do this because the internal one is garbage.

It started out OK, but apparently its become worse and worse.
[Android Head-Units] balaes:
2.8.3 firmware

Anybody try the new 2.8.3 firmware ???
[Android Head-Units] foggydew88:
It's easier then it seems, check on the tread:

http://xdaforums.com/showthread.php?t=2610926

My unit is different, but once that you identify the mic positioning on the board it's not so difficult desold it and place a couple of wires.

Inviato dal mio HTC Butterfly s con Tapatalk 2
[Android Head-Units] gyaku_setsu:
It looks the same as the one I bought, but the screen resolution looks like it is higher (1024x800 versus 800x480 on the one I bought) and it is showing up as having android version 4.2.2. I wonder which seller is wrong... I hope it's mine ;) Then again, looking at the backs of these units, they look like they have very different connections. My seller is known for photoshopping images, so I am not sure if it is as accurate as it could be. I suppose we'll see.

I am hoping the microphone is better on these units. I have heard not-so-good things about it in the generic AN-21 U. I also saw a unit for sale by autopumpkin that is running Android 4.2 and has an external microphone. That one is specifically designed for an older generation VW hole, though... and it doesn't look nearly as sexy as these new screen-only units.

Something about units that don't run 4.1 specifically make me think they are WinCE hybrids... It should—of course—be possible to run up to 4.4, but they never do for some reason.
[Android Head-Units] kaween:
Welcome back ! :D

So you were crazy enough to "frankenstein" the units as suggested ? Good Job ! :good:

In the mean time, it seems I now have a mainboard on surplus as my repaired unit has not failed once after I modded it.

I did replace the original fan with a 40mmx40mm Scythe Silent fan now : It's now working all of the time, yet the unit remains near-totally silent. Wonderful mod, I recommend it !
[Android Head-Units] Skratchuk:
Just out of interest what is your mcu?