yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] hamid_valad:
thanks, actually, my HU is working fine, BUT, it has some visual defects. (the plastic bezel is deformed and wont fit in my car very well) and according to my warranty, they should give me a new one.

yet, as u can see, i live in iran, and here, the customers have no rights. (because if we want to sue someone for their lack of service, the process is expensive and complicated and sometimes the result is against our self, yeah this is how law and court works here!! and they know that if they don't give good service, it's not worth for us to go after them and sue them!!!!!)

as i went to the my dealer and they said, your case is not our problem, and it's because of "my bad usage"!!!!! and only software issues are now under warranty!

now i want to install a wrong MCU, to cause some software problem, so i can ask them to change my HU.

but as i said before, they can easily dodge my request!!! so i want to make sure, that it's reversible and if they refused to change my HU, i can reinstall my old MCU version to make things work again, and think about how to change the frame.

(i was even thinking about installing the 2.6.x version which caused the DVD to stop working! but i found out it's not reversible, at least not yet)

sorry if i wrote a lot, but i just wanted you to know what i'm dealing with.
[Android Head-Units] hamid_valad:
well, actually, they are not the dealer per say. but, when you buy a SsangYong Actyon, they will pre-install this HU as an optional feature!

and since they are the only sellers who have this device (they import them from china on a massive number) they don't care about the customers opinion. (we cant go to anyone else! they are the ONE!)

they don't know about the software updates, the most recent version i saw on these devices is 2.7.x and that HU was shipped with this version. so i'm sure they have no idea about MCU or reversible software errors.

[the only time they had changed the HU, was at the beginning, which a lot of buyers faced the "white display incident" and they kinda had to change them]

they warranty the software, since users here don't have the knowledge (or guts) of messing with the software (or maybe users are too lazy to do so, or simply they don't care). most of the users won't even change the background!!! when the dealers saw i updated the EsFileExplorer on my device, they were confused!!! like how did u do THAT!

(i'm not sure if i got what you meant by "change hardware binding of the buttons", but if i'm right:) i think the button binding is not enough , because i think they know how to hardreset! or if they know, i'll be back in square one, and they will be more suspicious about me!! :cyclops:

and as for hardware changes, i don't want to give them any more reasons to evade my request, if they find out that i opened my device, i'm pretty sure, that they will say that opening the device caused issue, so that i'll be in square one again, with no warranty!

i'll try installing MCU with the least difference than mine.

thanks for the help. :highfive:
[Android Head-Units] Netconn:
That's too bad that these radios weren't designed better than this. With all the developers out there you'd think they wouldn't be buggy like this.

I was planning on trying 2.8.6 and 2.8.8 but I don't think it will solve the SD card problem. The video player also won't play a video on the SD card. There's certainly not much room on the system storage for music and videos.

I tried PlayerPro, it wouldn't find the SD card but if I go to an MP3 on the card thru file explorer and click on the MP3 PlayerPro will play it. I tried Jet Audio player, it found the SD card and all the MP3's but said there is no music at this location. I'll try Rocket player and see what happens. Very odd that the stock player finds the MP3's but other players won't.

The CAN bus on my Ford truck only has one wire coming to the original radio on the plug, since it's a serial bus I think it only needs to receive data. I'll need to work with that more, hoping someone has that info.

I like the radio but it's not much good if the SD card is not recognized for some apps. I haven't tried moving apps to the card yet to see if there's a problem there.
[Android Head-Units] kaween:
I agree with the notion that these units would be a lot better if the manufacturers would more attention to detail.

Sadly, in this kind of market and based upon my experiences, the AN21's are by far "one of the better ones".

I wouldn't expect the update to a 2.8.x would solve your SD issue either, but it may be worth a try anyhow.

As for the gravity of the SD-issue (and don't throw any rotten tomatoes please) using a high-capacity USB stick isn't that bad either. Actually, it even prevents a couple of issues several users have been complaining about (like bad sound at regular interval when reading mp3's from SD, it seems that slower or cheaper SD cards are prone to cause bad audio/audio glitches when playing MP3's, and although there are a couple of speed settings regarding the SD card readers of the AN21's I've noticed there are combinations and brands of SD cards where no setting will save you, and the MP3 software's internal buffering can't save your audio either).

As I understand it, the reason why several apps break on SD-access is the pretty-odd device name the SD slots carry in the AN21. Software that just scans for standard locations can't cope with stuff like that.

Better written software should not have any issues with this, and both Rocket Player and Poweramp should work correctly in this regard. With file explorers you can have the same issues, but a good written file explorer like Total Commander should not have any issues with it either.

The strength of these cheap android units is that given some effort, you'll find solutions to most of the shortcomings.

On A-brands it's more : if it doesn't behave like you want it to do, you're screwed. And if it can't do something you want, there's only the Apple road. (upgrade or die).

But as I said on this forum on all 2din Droid's : there's no such thing as a "100% out of the box solution". Yet. In worst case you have 2din piece-of-junk that will excell at anything except adding to your daily frustrations. In best case, you'll have a unit that you can get to do your bidding in a fashion that actually is useful and comfortable, and where the "things that don't work" aren't totally out-of-your-control. For example in your case : if you can resolve you SDcard problem using another 3th part Player, even if it's not your favorite piece of software, this situation is a lot less grave than a unit where for example the Audio Amp chip is of such a low grade quality your radio sounds like a low-bitrate MP3 file. And yes, such devices do exist too.

In all honesty, and this may not be what you want to hear, most of these units are not meant to reach the same lifespan as a new car does. People installing these kind of non-mainstream units are predicted to upgrade their units at least once every so-many years, not like a better stock-radio or high-price-range aftermarket unit that is expected to remain installed throughout the life time of your car.

Good luck, and let us know how it evolves !
[Android Head-Units] Netconn:
You are right, with enough effort you can work around a lot of the shortcomings. You were right about Rocket Player, it found all the MP3's and worked good. I had it all set up and pretty good....... But now it's toast... Someone should have warned me about not using the "Model Choose" option. I don't know what that is, I thought maybe it would help the CAN bus issue but it apparently changes the MCU firmware and now the radio is useless, just a high pitch noise. I tried all 4 models and it still won't work. I can't open the door to get to the SD card either. I looked in the internal memory and can't find an MCU file even if I could open the door. I can move the file from the USB to the SD card but I can't find the right MCU file 4.3.1-1-10-0901

Oh well.. It was fun while it lasted.. 2 days..
[Android Head-Units] kaween:
Oh crap. :(

The "dead after model choose" is a very old one. I know there were very old version where doing a "model choose" was near-to fatal. Odd your new model would suffer this fate. I can only imagine the gravity of the problem varries with the hardware version of the mcu of a unit.

Solutions .... *scratches head*. First of all, the mcu's can not be found on your unit as long as it isn't rooted. You simply don't have access to it.

Secondly, even if, as you point out, it probably wouldn't do you much good as you've tried the ones available.

It is perfectly possible the correct MCU file isn't even available anymore on your unit : the unit may have been updated by the seller with a new system version, incorperating a set of unsupported mcu's. The moment you select a DIFFERENT mcu at that point, it will overwrite the current one by one it finds in the Etc folder .... which CAN be the wrong one. I've had that happen to me once too as my seller asked me to update the mcu to try and resolve another issue. In the end, I had a badly working unit, a seller who didn't even believe me when I told him the MCU he send me was wrong, and the only proof I had was the picture I had taken from my system overview which I had kept as reference where the correct, original MCU version was visable.

Start by noting down the MCU version that is reported at this moment in your units' system discription for reference.

The reason why the radio only outputs noice is probably connected to the fact your unit may use a different version of the 66xx tuner chip. As I remember, there are 2 or 3 different variations of them, and a wrong mcu will cause faulty access to the chip.

The best route would be : contact seller, ask for the correct mcu file or at least the correct version discription so you know what you're looking for (I take it you do not have the correct mcu-version number noted down for reference ?). Once you have the correct file from the seller, copy the mcu file into the SD which resides in your unit. This can be achieved by copying the correct mcu file to an USB stick, plug that usb stick in your unit (I suppose it has the connection capability over a cable or something to use an USB thumb drive), and use a good file explorer to copy it to your SD. Once you have the mcu file on SD, you can choose the "update mcu" option as it will only flash from SD.

If you by some luck know the correct mcu version, maybe you can find a usable one one Shadowmike's file repository.

But first start out with contacting your seller. As long as your unit still accepts input, there's hope. It won't be "toast" till it stops booting completly.

Good luck, hopefully some other user can chime in ?
[Android Head-Units] Netconn:
Thanks for all the help...

I sent a message to the seller (China) asking for the MCU and system updates and files. I guess I'll see what he says.

I can see on this thread that I'm not the only one that changed the MCU file and bricked the functions. When I got the radio the MCU file version said 4.3.1-1-10-0901 which I can't find anywhere. I tried a few different files from the first post link and some others I found but nothing worked. They all do the same thing.. Nothing.

I don't think firmware would damage the hardware, just make it not work.. But I could be wrong. If so I guess I'll have to return it. The Android part still works fine, it's the hardware that stopped working (audio & DVD door pretty much)

Doesn't seem to make any sense that they would put firmware files on a radio that makes it brick. Must be legacy from other radios the don't bother to remove.

Maybe more info will come for other users...
[Android Head-Units] comptechltd:
Did you actually get that mic to work with one of these units??? I looked at them and noticed they have a 2.5mm plug with about 4 contacts (I guess since there are 2 mic's on it).

Steve
[Android Head-Units] Quincydog:
Touch Panel
[Android Head-Units] orditeck:
After reading that kind of stuff (MCU update bricks the device, etc.) I have some more questions.

I ordered this one: aliexpress.com/snapshot/6418026207.html and will receive it next week.

I don't trust my seller. Communication is really hard/bad with him (happy_bid_outlet, "Jason Lu"), really slow to answer, he was supposed to ship with DHL and changed to UPS without notification, etc. I hope I won't have trouble with the device...!!!

1. Anyone already seen this unit? Any comment?

2. What kind of protection should I take when I receive the unit to make sure I have no problem with the issue if I have an issue with the unit?

3. Any update I should do right after the dash install? Android 4.1 to 4.2? MCU? Something else?

4. Do I need to root it? I already rooted some Android phones so I'm okay with that, but if I don't need to I'd be happy.

5. Can I use use a USB OBII? I have a bluetooth one but as stated before it won't work, my device doesn't support OBD2 bluetooth.

Thanks!
[Android Head-Units] Netconn:
The time difference and language difference certainly seems to be a problem. I have to wait overnight to get a response to my questions. From what I've learned so far, only the RK chips will run 4.2 and above. My seller said the radio I just bought was 4.2, it's not, it's 4.1. But the worst part is the MCU firmware. Looks like you need the exact right one for the hardware to work. I've asked my seller for the firmware twice and I've got no response and my radio is bricked now. I bought it on fleebay so I can just return it if he won't get me the firmware. I'm not even sure it will work even if I get the firmware. Stay away from the Model Choose!!

I tried the bluetooth dongle and a bluetooth app but I got nowhere for the OBD2, I've read it works with a USB cable. RDS didn't work.

On the good side... When I did have it loaded up, rooted, tweaked and set the way I wanted it did work pretty good. Not real fast but not bad. Since you won't be using some of the function apps preloaded (and can't be removed) a new launcher would be useful... But there's not a lot of RAM and it did run out fast. Using an SD card app will help give up some RAM but some apps won't work if moved. Hit and miss. Rooting is real easy, follow the posted directions. It loaded everything I asked for from the play store, I don't think a spoofing app is needed. WiFi from my tether worked OK. Nav apps worked but I didn't drive with any yet. Load maps on SD card.

The radio I bought has a nice screen (7"), nice light touch, lots of audio power, not good default players and EQ (2.7.9), the CAN bus didn't work, the phone app worked OK and streamed music pretty good from my phone. Whatever apps you add will still be controlled by the factory apps (fade, balance, etc.).

All and all for under $300 not bad (with a camera). There are quad core radios with dual BT that claim to run 5.0 and more features but they cost a few hundred more. I'm not sure I want to invest anymore then $300 in my vehicle. This is my first Android radio, I have many years of experience with Android phones and tablets... It really helps.
[Android Head-Units] droser:
I can not flash the system. help me!!

ask for help. ordering on aliexpress. a week later stopped working microSD. now I can not flash the system. firmware files placed on sdcard, but still update srart-update end.:( (android4.1 system 2.6.60).
[Android Head-Units] orditeck:
Thanks for your post and comments! Which one did you order?
[Android Head-Units] Netconn:
This is the one I just got:

aliexpress.com/item/Free-shipping-7-Capacitive-Touch-Screen-2-din-Android-4-1-Car-DVD-player-GPS-Wifi/1898547168.html?

Pretty much the same as yours but with a different face.
[Android Head-Units] orditeck:
OK, the link you sent is from the same seller I ordered mine from, but as you said you ordered from fleebay I guess you didn't order the exact one you sent on the link, right? Because I would ask you how was the seller... in my situation he is pretty useless. I hope if I have an issue he'll be helpful because people seems to rely a lot of their seller to get the correct firmware files, etc.

You said that your unit is bricked. Did you fix it? How did you brick it? Was the seller helpful? I wouldn't like to brick mine so I'd like to learn from your experience.

Thanks again!
[Android Head-Units] Netconn:
The one I bought is the one I sent the link to but I bought it on fleebay for $295. I'm pretty sure my seller has no idea about the radio's firmware or service. The radio was shipped from California but the seller is in China. Must be a new thing to reduce the shipping time that stop buyer from buying from China. The nice part is that I can ship it back to California for a return.

I tried loading more then a dozen MCU files and none have worked. There's at least 25 of them in a folder in the system root but none are the right ones. These must be legacy files from a master load. The right file is the only file. Which I can't find!!!

Kaween is very right... There is a learning curve for these radios and systems, it's best not to fool with them without the proper info. In my case I had no idea that the "Model Choose" that's in the setup would brick my hardware. You would think there would be something in the manual saying "DO NOT TOUCH".. But then again it's made in China.. Par for the course. Lesson learned. If you can find your files it's a real good idea to copy them and hang on to them but they are hard to find. I'm very surprised I can't find my MCU file anywhere on the net considering how many of these radios they make.

If the seller won't send me the right files I'll box it up and ship it back, I've only had it less then a week.
[Android Head-Units] comptechltd:
Kaween,

I have no problem getting one of these if it fixes the my echo issue. I have an issue where the caller hears themselves repeated in their speaker with about a 1/2 second delay. BUT.....it seems to depend on which phone is paired with the HU. Mine is a Droid Maxx and the echo is there. My wife's phone is an S5 and there is no echo. I'm thinking it may be more of a Bluetooth issue. Do you think this mic will make a difference even with the crappy hardware in these HU's??

Steve
[Android Head-Units] kaween:
No.

If your issue changes by using a different phone, the mic itself should not be the cause of the issue. "Crappy hardware" is not what I'd call what's inside these units. After all and even with all shortcomings, NONE of the A-Brand manufacturers seem to be able to produce comparable units _at any price tag_. They simply do not have them, period.

Do these Chinese manufacturers cut corners ? Sure the do.

But if Phone A works flawless and Phone B produces echo's, the "crap" part of this equasion does not reside in the 2din unit .... but in the phone in question.
[Android Head-Units] comptechltd:
Thanks for the response. You are right about the hardware. I guess I should have said "quality control". While shopping for a HU even the 'A' brands didn't have a fraction of the capabilities and none of them received stellar reviews all for the low price of $900 to $1200 USD. The echo issue seems to be phone/BT dependent. Some combinations have it some don't. My phone is so rock solid in every other area I don't think I'm going to do anything about it. I'll wait til I upgrade and see what happens then. I may still look at getting one of the Andrea 350's to play with. They seem pretty good.

Steve
[Android Head-Units] anpo:
Thats not what I meant. I have a HU with external mic which I initially used but thats sucked big time. So I put a Parrot in between HU ans speakers, tho whole thing not only the mic. You cannot not use a Parrot dual mic with android.
[Android Head-Units] comptechltd:
After playing a bit more with the volume settings on the main HU, the system volume settings, and the bluetooth volume on the phone I can sometimes get the echo to go away or reduced considerabley. With so many adjustments its tough trying the right mix ....but my point is I may give the 350 a try and see if it works. I can get one for $50 so that isn't to bad. What do you think?

Yeah, after I posted that once i re-read that is what if figured. No worries.

Steve
[Android Head-Units] kaween:
My thoughts exactly. At 300USD : no way. At 50USD, it's absolutly worth trying out.

I don't know if you've heard the audio samples of the 350 (on YT) and the suppression of noise and the resulting output quality is extremely impressive. Even if it would not turn out to solve your specific problem, there's a strong likelyhood that you will find good use for it somewhere else. There's no telling if it will solve your echo issue : it may or may not do what you hope for.

I've ordered one of these 50USD things myself for exactly that reason by the way : if it works as good as the demo shows it's a real bargain, if not : no man overboard.
[Android Head-Units] axxel8770:
Need Help

Hello, i have an opel mokka android double din but the car dashboard key do not corrisponding . Can help me how to update to the correct car model or what type of mcu or firmware can i try to install ?

i post the photo of my display unit

Thanks
[Android Head-Units] kaween:
What do you mean exactly ?

- Do the hardware keys of the radio itself not correspond with the needed/desired action ? In that case, you can re-learn the radio's hardware buttons over the general settings -> extra (code : 123456) -> panel keys

- if you're talking about the SWC keys of your car, general settings -> SWC control
[Android Head-Units] axxel8770:
Thanks for the reply, but....

The android Unit for opel mokka does not have any hardware button is only based of a one doubledin touch screen , and it has only the reset micro-button . The swc control work well , but the original CAR DASHBOARD BUTTON do not correspond to the desiderd action on the android unit, for example if i press the radio button in the car then in the android unit start the navi app .....
[Android Head-Units] kaween:
Forgive my daftness, but that's about as clear as mud to me. Do I understand you correctly that you have a real physical button on your dashboard that invokes the Radio ?

(I'm accustomed to cheap cars, does it show ?) :)

If so, launching the Nav must be bound to that button somewhere and I would expect it to be handles by the SWC circuit of your unit. If you enter the SWC learning of your radio, can you try "learning" the Radio button to the Radio app maybe ? Better said, providing you did the installation yourself, did you "learn" the SWC to the radio ? If not, it may be just a question of relearning the radio button and a wrong "learned" code from the factory.
[Android Head-Units] axxel8770:
The swc learning dont work in My type of unit so all is Stored in mcu ,i have find a new mcu firmware But i do not know if i Can install It... The site is in Russian ...OPEL MOKKA COSMO. ГОЛОВНОЕ УСТРОЙСТВО ANDROID 4.2.2 CARMEDIA KR-8040

ПРОШИВКА 2.8.8 от Kaier. MCU-4.3.8.3-11-80-440101 my mcu is 4.3.5-11-80-4501 .... how i Can know if is right for my unit?
[Android Head-Units] macca017:
I have a current model Mitsubishi Outlander and I'm also are unable to get the SWC to work.

I have been through all the MUC firmwares I could find on Yandex, however, none of them are for a Mitsubishi.

The MCU that came with the unit was 4.2.15.1-16-10-6501 and I believe that is for a VW.

I have tried a few that came up as unknown when using http://an21u.coldzone.ru/ they didn't help get the SWC working. :cool:
[Android Head-Units] superbass311:
Storage Problem

Hey Guys,

I have had this radio for about a year now and I do love it. However, I am having a Spotify storage issue. Whenever I click Spotify It says "We found no place to store our data, please check that you have a working SD card and free space". I went to my storage and I have plenty of space. I also uploaded a video showing the problem. I have the version where the volume rocker is on the right and MCU version 4.2.13-8-10-E501. It is not rooted because when I bought this radio no root yet. Can someone help me fix my storage issue. Every other app works as you can see on the video.

Video showing the Problem: https://www.dropbox.com/s/y0umvfdi8g1x8tq/2015-01-03 03.33.42.mp4?dl=0