yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] tylerzipz:
Need help

Hey all!

Just purchased what I think is the An-21 U.

Here is the page aliexpress.com/item/Newest-2-Din-Android-4-2-Car-video-player-build-in-car-radios-GPS-Navigator-Bluetooth/1990842398.html

The only thing off is the MCU , it doesnt look like any of the others on the front page. Im nervous rooting/updating if this isnt the right unit. Here is a picture of the hardware information(attached_)

Im also having a problem when the ZONE is in the middle, the front two speakers hiss really bad, the only solution I found was to move the zone settings all the way to the back, does anyone else have this problem? (thats why I want to update mcu, thinking it might fix it)

Thanks so much guys, excited to start playing with this unit!
[Android Head-Units] MynticeLX:
Just downgraded and still has the same issue. I have to turn the thing on and off at least 6-7 times for the OS to come on. The rest of the time, it just white screens to blank screen. I am assuming that this is not normal as others would have listed it. I've contacted the seller and asked as well.
[Android Head-Units] omarko:
ok that makes sense ...however, how come when I disconnect the red wire, the buttons stay lit up ? I waited 5 minutes and they are still lit. Or am I wrong and it does not work like that in my current environment (connected to 12V battery?) because the red wire actually sends some signal to the radio to tell it to switch off completely ?

hope that makes sense what Im trying to say.

thank you.
[Android Head-Units] jakejm79:
Not it doesn't send any 'special signal' just 12V or not. It could just be an abnormally due to the way you have it wired for testing purposes.
[Android Head-Units] donaldta:
If I remember correctly, SAAB uses GM LAN version of CAN Bus. Which is well... different.

Of course, this is irrelevant with Android head units since all that information is saved to the internal flash storage. The time is garnished from the GPS.

Seconds? Don't you mean minutes? The Android units I've played with will stay on with the display off and the WiFi/Bluetooth/GPS radios off anywhere from 5 to 15 minutes before going through the shutdown sequence. This is to avoid the owner from having to wait for the boot times when they are out for quick errands.
[Android Head-Units] omarko:
another question (sorry!) ... I fired up the Sygic app but I am getting no reception ... it only picks up like one satellite after waiting 15-20 mins. the antenna is connected and I sat the end of it (the little square thingie) on the window ledge in the room which is basically in the open under the sky.

Is there a way to check the GPS works ok ? Any ideas why there is no signal ? I would have through with a dedicated antenna like this it would pick up the signal in no time but so far , its terrible.
[Android Head-Units] donaldta:
I'm guessing your idea of "open sky" isn't really "open" since even if your GPS antenna is sitting on a window ledge it is still probably blocked around 180 degrees of "open sky" by your home. Install GPS Test and you can get a better idea of which of the satellites your unit should be able to pick based on your location. Though you probably will want to sit on the open street instead of inside your home.

Well, either that or North Korea shot down your country's GPS Satellites.
[Android Head-Units] omarko:
heh thanks, will move the antenna outside.

Lastly, is it possible use video like this as boot animation? I have it as mp4.

http://vimeo.com/82277559

if yes, how ?
[Android Head-Units] jakejm79:
I know it's different, but a possible reason for the labeling of Tx and Rx, or maybe the Chinese have no idea of how they have labeled things.

True, but IME I have found the internal clock is retained by having the main power feed on, if you disconnect the battery it does take a few mins for the GPS to resync the time.

On my unit (and several other units, be them android or CE), it is always less than 30 seconds, I have a power antenna and the power is cut to that when the unit powers down fully so I can always tell when it is fully shutting down vs just the screen off even if I don't have the lights on. It's long enough that it doesn't reboot if I just start the car, but not long enough that I can actually get out of the car and back in.
[Android Head-Units] KID52:
There is an SDR app that works with RTL2832U tuners, I am trying to find a TV app that also works with this chipset as the tuner itself is cheap, and being generic, does not come with an Android app.

Obviously. The conversation was regarding USB tuners.

It would be pretty clear if it had just been disabled, as there would be an aerial socket on the back of the unit for the internal tuner.
[Android Head-Units] KID52:
Same with my unit, if you cut the ACC power it will stay on for around 5 to 10 seconds before turning off. Power draw in this state is basically 0, but if you do cut power completely, some things do reset, like time, recently opened default app, volume level. Maybe other things too.
[Android Head-Units] omarko:
one more quick one ... I copied a GIF file on a 16GB micro SD card. There is nothing else on it.

When I insert the card in the radio and go to the installed File manager, when I select SD card, it shows me all these folders with files in them I have never seen. Looks like some other SD card. Is there one inside the box ?

If yes, how can I change the "drive" so I can browse the SD card I just inserted?

thanks
[Android Head-Units] donaldta:
Yeah, I don't think that power antenna going down is a good representation that the unit is "fully shutting down". It may be for the non Win CE/Android units which have instant on availability. But, not necessarily for the ones that utilize general software which require a certain amount of time to boot. Of course it is less necessary on Win CE units because they have ridiculously short boot times to begin with.

My current unit, will shut off the 12V out to the Power ANT/Amp line at the same time as it shuts off the display and radios. However, the OS will continue to operate and you can connect via ADB on USB to run Linux commands while the screen is off. It has its own timer which is set shutdown the OS after 10 minutes after the display has been shut off. It also has a tilt sensor which will pre-power the unit to give a sense that unit boots up quicker than it actually does. The idea is that it will start the power on process when you open/close the door but then quickly power off if the ignition is flipped with in a couple minutes.
[Android Head-Units] KID52:
This is another thing that has been discussed a few times, and is also explained in the first post.

So again, the internal storage is seen as "/sdcard", the actual MicroSD card is seen as "/extsd".

Can't believe how many repeated questions there already are in this thread :(
[Android Head-Units] donaldta:
Try not to associate "drives" like how it is represented in Windows. Each physical drive's partition is attached as a block device in Linux under the /dev directory. And that block device is mounted onto of a directory somewhere beneath root (/). So, if you see directories such as dev sys etc then you're looking at the root directory. Usually, the mount point for sdcards are /mnt/sdcard and there's a softlink in root /sdcard but apparently, this is not the case on the AN-21U and is/mnt/usb/mmcblk1p1 with a /extsd softlink.
[Android Head-Units] jakejm79:
Well you must have one of those fancy pants expensive models that we are too poor to afford, lol. All I know is that if I shut the car off and wait 10 seconds (the antenna will then go down and the lights shut off), if I then turn it back on it fully reboots, if I wait 10 hours instead of 10 seconds the exact same thing happens and takes the exact same time to boot.

I'd love for a unit that started to boot when I unlocked the car with the remote, by the time I strap in the kids and myself it would probably be fully booted.
[Android Head-Units] omarko:
I am sorry guys and thank you very much for explaining. Apologies.
[Android Head-Units] donaldta:
I think that's because not everyone has seen this video...

[YOUTUBE]JmvCpR45LKA[/YOUTUBE]

...or they don't know how to use the...

Of course my favorite part of the video starts @1:33, "Speaking of thanks, use the Thanks button! Use it every time you get an answer. Even if its one you don't like. (You) ungrateful bastard". :fingers-crossed:
[Android Head-Units] omarko:
heh ...

btw, is there a thread or another website where ppl post their launchers and the look of their setups ? I would love to see what others have done and copy some ideas.

also, why after

every

shut down of the unit, it changes my live wallpaper to the winter one and also when I press home, it asks me which launcher to use ?
[Android Head-Units] bmj67:
[MENTION=5389783]donaldta[/MENTION] I thanked you for your response you ungrateful ba**ard hahaha

As for usb odb2 scanner questions I have already confirmed that mine was ftdi chip and works with newest torque in a previous post. It is just a generic ebay special.

I too would like to see a few options for launchers. I would like to ditch the 4 non changeable icons on the bottom dock or at least only have them on the home screen and not the screens to the sides.
[Android Head-Units] omarko:
ok, here is what I mean guys , I uploaded a short video where I started the unit and you can see al the settings I changed and then shut it down and then restarted again and you can see, its all back to what it was before.

Really frustrating. Why is this happening ? I upgraded to the latest firmware listed in the first post and I think it started happening since then.

Would appreciate any thoughts on what the issue could be or how can I fix it .

thanks in advance.

http://www.youtube.com/watch?v=CDY6-VZYSIg&feature=youtu.be
[Android Head-Units] axxel8770:
Solved

The Russian MCU work ! Thanks to all for the supporto.
[Android Head-Units] kaween:
https://community.spotify.com/t5/Hel...rd/td-p/873535 is a good place to start.
[Android Head-Units] superbass311:
page not found and this problem is only on this radio. not sure I'll get much help from Spotify on a radio that does not even have a model number lol.
[Android Head-Units] comptechltd:
Kaween,

I found an interesting web page on the Andrea http://avic411.com/index.php?/topic/29433-bt-mic-issues-for-bt-calls-asking-for-a-sticky/page-7 Look for the post by danozmann. Apparently it needs an attenuator to work properly.

Steve
[Android Head-Units] sambutler86:
Hi Tyler,

I have the exact same device with the same MCU. and from the same seller.

He did tell me IGo would be preinstalled with Australian maps. It wasn't, but he gave me a baidu link to download. However, the voice prompts while navigating do not work and so far he can't work out why. However, I note in some old posts some people having the exact same problem with IGo, but I haven't found a solution yet.

I'm planning on rooting mine very soon too so I can install Market Helper, but am a little nervous like you.

I can't help you about the zone issue, as mine is installed in a utility vehicle/truck and thus only has a single zone (only two speakers)) and have no such issues with a hiss.

However, if anyone has any idea how I can get Igo voice prompts working, I'd be most thankful. I'm trying to use the Australian voices. The unit music the music for the Navi directions, but nothing comes out (or sometimes maybe one word comes out). Navi volume is set to full and background half in the sound settings.

I'm stumped
[Android Head-Units] superbass311:
no one can help me and figure out my storage issue with Spotify?
[Android Head-Units] mrblessed:
Check your sound priority

go to sounds in settings n change it try all 3 to see if it's tht
[Android Head-Units] sambutler86:
That was the first thing I tried,. But nothing. :( Thanks though.
[Android Head-Units] macca017:
Go to the android section here http://fixmygps.info/forum/forumdisplay.php?fid=178

Put the TTS voices into your igo8 voice file.

Go to settings on your device, language, select google voice, select your voice etc.

I have tried most other voice engines and I could not get them to work, only google voice worked. :cool:

igo8 voices in android actually come from the installed voice engine in the unit and NOT igo8.

The guys on the forum I linked too are great people and will help you.
[Android Head-Units] kaween:
Hi ! Thanks for the heads up. Attenuation from line to mic leves is pretty easy to do. Can be done with two resistors even. When I get the device, I'll post my findings but this example should go a long way :

http://explodingspaceships.tumblr.com/

What I did find interesting is that owners of a High-end Pioneer Navi unit basically have the same kind of issues as on these low-cost Chinese devices. Not sure I have to find that commical or tragic.

---------- Post added at 12:06 PM ---------- Previous post was at 11:48 AM ----------

hmmm. bad link

https://community.spotify.com/t5/Help-Android/spotify-doesn-t-save-to-sd-card/td-p/873535

Afaik, it's not an AN21-specific issue, but connected to the way Spotify determins storage space (which it seems to do only at time of installing leading to all kinds of variations on a "spotify can't find free space and I have loads of it !" cases). Hopefully this -working- link turns out to be more helpfull.
[Android Head-Units] sambutler86:
Did you try rooting this unit yet. I have but can't get it to work. Spent several hours.

Baidu root seems to work fine.

I get superuser permissions using CWM Superuser (for some reason SuperSU can't fails to install the binarys everytime) and also using terminal emulator. However when I reboot, or even close the Baidu Root app, than the unit is no longer rooted. Root checker indicates it is rooted when the Baidu app is open, but indicates it is not if I close Baidu root or reboot the headunit. Have you had the same experience or have you managed to get it rooted.

Does anyone else know what might be happening. I have read earlier in this that other people have had this problem (about a month ago), but haven't read any solutions beyond upgrading the MCU to 2.8.8.

Any ideas?

---------- Post added at 12:50 PM ---------- Previous post was at 12:19 PM ----------

Thanks.

Also one last thing, anyone found a particularly useful launcher (or even a theme for buzzlauncher or themer) for headunits (ie. big arse icons).
[Android Head-Units] sambutler86:
I know this is several months old, but this seems the solution to my problem......but the links broken.
[Android Head-Units] superbass311:
your the man! that worked I had to remove the SD card and format it. now it's working and now I have a new problem. Lol when I go to update my apps I get this and again I have plenty of storage free
[Android Head-Units] wanxu:
Hi, I lost the radio widget with last update. Do you know where to get it?
[Android Head-Units] comptechltd:
Kaween,

I also noticed that the DA-350 outputs stereo. I assume you would just hook the left and right together in the attenuator??

Steve
[Android Head-Units] kaween:
I'll cross that bridge when I get there. :) But yeah, that will be the starting point.

[MENTION=5863839]superbass311[/MENTION] : in your place, I'd simply reset the complete device and start over instead of trying to debug this behavior. Not sure how this behavior has come to pass, but I've got a feeling it won't be the only oddity in your current config. :)
[Android Head-Units] superbass311:
Where is the root instructions . if I'm gonna factory reset I might as well root at the same time
[Android Head-Units] macca017:
https://yadi.sk/d/tbaxJYL9cJjKK/Root Apks

Load the above onto a sd card

Run Baidu, select the control on the right and continue

Run Superuser and re-boot.

More detailed instruction if required are on this thread, just do a search
[Android Head-Units] superbass311:
Well that's easier then rooting a phone. I'll give it a whirl tomorrow. is there a new MCU out also? I've had this one for over a year now.
[Android Head-Units] macca017:
All you need is here, instructions are from the web site

https://yadi.sk/d/tbaxJYL9cJjKK

:o

1 - Install pached firmware 2.8.7

2 - Install BaiduRoot

3 - Click in ROOT (blue icon in the center of the screen)

4 - Install CWM Superuser and update binaries. A window with chinese words will appear. Press the right hand option

5 - After you update the CWM binaries uninstall Baiduroot.

6 - Reboot.
[Android Head-Units] HellStorm666:
Hi all.

I have a problem with my unit.

I have a Seat Leon 1P and the 8" unit.

Also have the CanBus decoder.

Everything works. But the on/off with key doesnt work.

Unit is off, key in ignition to ACC on or even start the car. But the radio doesnt power on.

And when the car is on and I manually power on the unit. It all works.

But then, when I turn off the car, the radio stays on.

How to fix this?

The previous unit (Original RNS-315) did this.

The car doesnt have a acc and power kabel. Both are 12V all the time.

But the CanBus decoder should power on the radio, as it did with the RNS-315. Or am I wrong?
[Android Head-Units] superbass311:
super bump...
[Android Head-Units] FeEPro:
Scratched sounds while playing Music in stock music player

Hello,

is there a fix for the music player? Whenever I choose a track from the playlist in stock player I hear this annoying sound.

Can someone help me?

Its happend after I upgraded to 2.8.8 permroot.

Best regards

Feepro

PS Sorry for my bad english.
[Android Head-Units] superbass311:
HELP

bump..
[Android Head-Units] kaween:
Are you playing the songs back from an microSDcard ? I've had this same issue too, no matter what media player I used.

Some people have had succes with lowering the speed of the SD interface to "compatible" ect.

I didn't have any luck with that. The only way to get clean, "scratchless" playback was :

A) buy a microSDcard with better specs - currently using a Class10 Transcend microSD

B) use an USB stick for playback as I've never had this issue when using USB sticks as source.
[Android Head-Units] superbass311:
iHeartRadio

bump..
[Android Head-Units] superbass311:
My radio app seems to be acting funny. the red tuner bar at the top disappears when i move the dial. How do I uninstall the radio app and re install it or a different one. I have also factory reset it twice and both times no change.
[Android Head-Units] pedalquickly:
Time to sell

I would like to sell my radio. It is the single knob version as talked about in this forum. It has worked very well until a couple of months ago when for no apparent reason the touch screen stopped working. I asked for advise on this forum and it was suggested several things all of which I did. Unfortunately none of them worked. I was already using a lot of the functions with a steering wheel control but now have to also use a mouse which works fine.

I have tried different firmwares as well as checking all of the weld joints on the back of the touch panel to the best of my ability. Just tonight I tried the 2.8.7 Patched firmware with root mentioned a few posts up. It installed and rooted fine, but has the red text across the top of the screen that it didn't have before this firmware. So, i reset to factory but still have the red text. I have seen this before with other firmware versions and know it can be resolved.

I also have the remote. I should also mention that the iGo software is no longer on the unit and navigation software will need to be installed but not included.

$100 plus $15 shipping to anywhere in continental US.

PM me with questions.

Thanks
[Android Head-Units] HellStorm666:
anyone?
[Android Head-Units] jimmy_d_jr:
Unit questions

hey guys, wondering if anyone could shed some light for me, recently got a unit, it has the a9 processor so its closest match is the an 21u, however im not 100% sure, it has a 1024x600 screen which i have seen come out for the an21u

but its also running 4.2.2 and looks nothing like the an 21u

i cant actually post a link to the page however it is currently listed as "7.0" Double 2 DIN Android Car PAD Radio Stereo GPS Bluetooth Universal USB" by an Australian seller

its a single knob design, with 3 buttons, and mali 400 gpu

so if anyone can confirm that would be great, or if not, at least point me in the right direction.

cant even change the boot logo as there's no option in the settings

cheers :)
[Android Head-Units] macca018:
Your car would have a accessory wire somewhere and this would connect to your harness.

You need to get a professional to install the unit.
[Android Head-Units] Skratchuk:
Happy new year all. I have a strange problem where my volume down button is stuck and keeps turning down! I have noticed all the buttons make a clicking noise when pressed except the volume down button. Are the keys easy to fix or will i have to take the unit apart?

This is he unit i have View attachment 3100817
[Android Head-Units] HellStorm666:
I am the professional ;)

Problem is, the RNS-315 (original unit) boots and shuts down without the acc wire. The car has no ACC wire to the radio originally.

The CanBus takes this function.

However. Now it doesnt work, even though I have a canbus decoder installed.

The question is.

Can the Canbus decoder do this (it has the correct pin-out for it).

Or cant the unit use this and do i need to wire a ACC wire to the radio?

Hoped the canbus decoder could tell the radio to start and stop. And that the radio would listen to it.
[Android Head-Units] e-china:
I tried two ways to do ROOT. and any failed :(

I have this model

aliexpress.com/item/Free-shipping-Pure-Android-4-2-Car-DVD-Player-Radio-Stereo-GPS-Navigation-Dual-core-Capacitive/32233204805.html

Baidu Root Showed that kind of root made. but the application is turned off was not on board the root :(

The second method also did not have access to the file in the directory local.prop date :(

I had to do a hard reset device radio because it was not :(

System version 2.8.8

Android 4.2.2
[Android Head-Units] orditeck:
Hi,

I just received my AN 21U. I want to try it before install it in my car. On the product page, it shows 12V but I don't get the amperage.

Do you think trying it with a 12v 2a would be ok? Or with a motorcycle battery?

Thanks!
[Android Head-Units] FeEPro:
Hello,

thank you for your answer.

I tested around, I have the issue only with 320kbit Mp3's.

I will buy a faster microSDcard and than reply my results.
[Android Head-Units] kaween:
Hi.

I used a 3 Amp Stabilized Lab PSU to do most of my expermenting/repairs. If you don't crank up the volume above "10", the unit will work stable.

A typical motorcycle battery is 12V 7aH or something ? I'm using that type of battery as the thing that powers my pico-ups in the car (which powers my AN21 in its turn). Works.

The AN21-u with connected gps antenna stays around 1.7~1.8A when having 2 speakers connected and volume setting at roughly 10.
[Android Head-Units] orditeck:
Thanks! I tried it with my 12v 2a and it worked. Didn't plug the speakers, I just wanted to try the device. I love it. Can't wait to install it!

Why you guys root it by the way?
[Android Head-Units] e-china:
Tell someone how to make Root:)
[Android Head-Units] kaween:
TO BREAK STUFF. :)

No, honestly : everyone has his own reasons. Either you don't like the idea of being not-rooted (laugh all you want, I know enough people who simply can't stand the idea out of principle), or you want to toy around with the existing system apps to change their appearance, try to replace them with better alternatives ect ect .... enough reasons.

But do you NEED to root it to have a "workable AN21" ? No. You can use it without issues (my personal opinion) without rooting it.

[MENTION=6307975]e-china[/MENTION] : I'm sorry, I know there are people with exactly that complaint (the "not sticking" of the Baidu root) but I never had that issue myself. I simply used the permroot instructions on Shadowmike's site, and it worked and kept working.