yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] ThePapabear:
I´m at the same problem, but i never had installed .70. Volume knob on my unit is on the right side.

I have 6 models to choose from, but not one of them changes the behaviour of the volume knob, it keeps mirrored.

I had another unit from a friend and there the volume knob worked normal in the beginning too. The unit also stuck on the update do .62 -> factory reset (which helps nothing) and then a direct update (had to press left knob, reset button and power on the unit, to start the update from sd-card at boot) to .62. Volume knob is mirrored and works opposit to how it worked before on both units (made a factory reset on mine, because of some troubles, but knob was mirrored before, only with the update to .62 - or by trying all of the 6 models...).

For me the problem is not so big, because i am mainly using my steering wheel control, but my friend has to use the knob on the unit. So i would like to find out how to solve this problem too.
[Android Head-Units] Niclas.s:
I have this unit: .aliexpress . com/item/2-Din-Android-4-1-Car-PC-Car-DVD-Player-GPS-Bluetooth-Dual-core-1GHz-1G/1608265512.html

I have MCU 4.2.6.1-7-10-6501

System version 2.6.70
[Android Head-Units] flyboy1100:
hey, this looks awfully familiar...

http://www.alpine-usa.com/product/view/ive-w530/
[Android Head-Units] B.Stromberg:
Well to be honest i will not do a factory reset again till we have some more information here.......

my Unit works again yes.........but its frustrating that volume is mirrored........

TIll now i dont really know what to do........ i am really scared to brick my Car Stereo.........

If there would be a reachable bootloader like on samsung units and "normal" firmware it wouldnt be a big thing to tryout all.........

but i think we still far away from all of that!

Its absolutly confusing they deliver that Unit with about 20 different MCU files...... with the risk of brick at any of those....... :(
[Android Head-Units] Orisai:
Chinese no-name manufacturers are well known for imitating the looks and functionality of western or Korean brand electronics.
[Android Head-Units] Niclas.s:
I actually thik we have the same unit. Cortex A9 Mstar786 Android 4.1.1

Left side Radio freq weal, and MUTE,DVD,NAVI, Band buttons

And i have volume wheal at right side. and Home,back,BT,EQ buttons

Could be worth trying files i mentiond above.
[Android Head-Units] B.Stromberg:
ok....inform me about your tests ;)
[Android Head-Units] sciallo:
Like I said, you would have that version if you were running version x.60-2 ...each update came with a set of MCUs in the /etc/mcu folder....

Yes, to try them you would extract that .zip file to the root of the sd card and do MCU update. I have tried them all with my unit and was always able to go back to my original one without a problem until I did a simple model change in the 6.23 version... Do not mess with the mcu in that firmware. In fact don't mess with that firmware at all if you can help it.

---------- Post added at 06:54 PM ---------- Previous post was at 06:53 PM ----------

worse case scenario, you'll need to pester manufacturer/seller for the right MCU....

Does anyone with that problem know what MCU the unit came with? (other than the *-1 we already know about)
[Android Head-Units] PsychoMcSatan:
Had some time today so I checked out a link that my reseller sent me with what I believe was .68 and discovered that there was a manual in there:

http://betopseller.com/img/dvd/new-android-manual.pdf

Has a lot more detail than the 5 pages or so that I got with my unit. Nothing groundbreaking but I now know what those little option buttons on the radio are for.

There are a few other directories with a lot of the photos that you see on the eBay and Alibaba ads.
[Android Head-Units] B.Stromberg:
sadly it dont tell how to access Bootloader.

I am asking myself if its not possible to install twrp or CM Recovery. Would be great to if its implemented into the Root hack app....

But what it helps without decrypted Images
[Android Head-Units] merit40:
beautiful, you can have them for the version 6.2.70? these are not installed.
[Android Head-Units] B.Stromberg:
HI!

I finally got my Volume back normal :)

I flashed the 4.2.5-8-10-E501 MCU at my Unit and Volume is not mirrored anymore :)

Also Color change and all other is working Normal,

That far i am happy for now :)
[Android Head-Units] sciallo:
Awesome! -E501 it is... Did you have to try many?
[MENTION=5727168]Niclas.s[/MENTION] and [MENTION=2678656]ThePapabear[/MENTION] will be glad to know
[Android Head-Units] ThePapabear:
Which system version do you have installed and where do i get this MCU version? If i can get that version, i will do an MCU update too and if it works on my unit, i will have a solution for the unit of my friend (who has problems with Bluetooth not working right at the moment).
[Android Head-Units] B.Stromberg:
believe it or not but that was my 1st try ;)

I choose that coz of the "e" in the filename.......... i thought it could be maybe for Europe *lol

But it worked that far.....

I think to know more about that Units its a start to decrypt that MCU file...... But where to start ?
[Android Head-Units] donaldta:
It has a "reachable bootloader" otherwise it wouldn't be able to load Android or any other operating system for that matter. It also has a reachable "recovery bootloader" by holding down the 'Menu' and 'Power' (on most unit 'push of volume knob') buttons while the unit turns on until the update starts.

There are no standards in Recovery Bootloaders in Android by the way and just about every manufacturer implements them differently. So, yes, this unit doesn't have a recovery bootloader with custom menu options, like in Team Win Recovery Project (TWRP) or ClockWork Mod (CWM) Recovery. But, don't confuse the lack of options in the Recovery Bootloader as the lack of a "reachable bootloader"

Yes, it does; on the bottom of page 60 it says, "Press and hold any panel buttons，and boot，the system will enter the upgrade interface automatically"

You should be able to, since it is probably just an unmounted partition on the device. You can verify that by installing Disk Info then enabling Expert Mode and Unmounted Partitions. The recovery bootloader should be labeled accordingly. However, one of the problems is that this isn't your average Android device. Most Android devices don't have an autonomous MCU controlling the I/O of various components. Nor do most Linux devices use a 128-bit UUIDs as filenames. Once you install a custom recovery bootloader then what? Would it even understand the format of the files from the manufacturer?

I guess it would except for the points mentioned above. I am not sure if it is possible since it would need to occur after you can access root. Otherwise, if Wonderkin (the author of the rooting apk) knew how to do it then he probably wouldn't have left the "ro.kernel.qemu=1" line in the /data/local.prop file. Leaving it to be removed manually.

Well, you have to consider that the AN-21U comes with various faceplates and a couple of different options. The many permutations of the MCU files are supposed to address each of those combinations. However, the way you are supposed to change it is in the "Model change" screen which is supposed to only show you only the options relative to the unit that you have. Unfortunately, it doesn't appear to work as well.
[Android Head-Units] sciallo:
According to this post he's running 2.6.70, you can also see the list of available MCUs in the picture he attached...

So... the way you would do that is:

- flash 2.6.70

- gain Root

- copy the /etc/mcu/4.2.5-8-10-E501.zip file to your SD card

- Extract the file from that zip and put it on the root of the card

- go to settings->Update MCU (I forget exactly where it is)

- It will do it's thing, MAKE SURE NOT TO POWER IT OFF OR DO ANYTHING until it's done rebooting

At that point you sould be able to flash a different version if you so desire... The flash shouldn't (as far as I know) change the MCU (kind of wish it did, I would have been able to save my unit...) but you can keep that file somewhere for safekeeping, so you wouldn't have to go back to .70 to get it again...
[Android Head-Units] Drakey83:
So, I know the China no name brand ODB2 usb cords are not very reliable but what about the ones from newegg or Amazon? I don't really want to spend $50 on a cord and there have to be some decent ones in all of these choices.http://www.newegg.com/Diagnostic-Test-Tools/SubCategory/ID-2747, http://www.amazon.com/OBD2-Diagnostic-Cable-KKL409-1-VAG-COM/sim/B002WIN8VQ/2 anyone have any suggestions?
[Android Head-Units] Andlix:
Does Google Voice Search works?

My head unit has a own voice search with doesn't work( maybe it works in Chinese). I install all Google Apps (from cyanogenmod site), most of them works, but Google Voice Search works only partly. For some apps it works, but for example not for Google Search.

And Google Apps can not access the external sd card. E.g. when I try to install the offline voice data, it crashes with a SecureException (destination must be on external storage). I edit the platform.xml but it doesn't work.

This affects also the fact that Google Music can not download the music to the external sd. Same exception, but Google Music does not crash.

An other problem is, that Apps with Google Ads crashes (error inflating class com.google.ads.AdView).

Similar, it is the ES Explorer. It crashes because it can not find the gesture library.

Is this the same with this unit? And is there a fix?
[Android Head-Units] donaldta:
Stop and think about it. If the unit is a cheap clone does it matter where you buy it from? The reliability will be the same regardless if you buy it from eBay, AlliExpress, Amazon, NewEgg, or your neighbor. The root of the problem is the manufacturer not the reseller. If you do insist on getting a cheap clone then just make sure the seller has a good return/exchange policy in case you need to use it. Often. lol

Also your links are fuxored.
[Android Head-Units] Miwer:
Anyone here know of this ebay seller called iceboxauto?

I found this unit, which will most likely fit my Skoda Fabia 5J of 2013 - but I want to be sure it is an "AN-21 U" type unit.

http://www.ebay.co.uk/itm/AUTORADIO-DVD-...(yada-yada) (edit: fixed broken link)

If anyone has bought from them before, please share your experience. (like, how are their support, and do they provide firmware updates, etc.)

I'm considering buying this item, because of their location (both I and they are EU), and I would like to save the import taxes. Also I think support will be easier using a seller "closer to home".

If you have different thoughts about this, please let me know. :)
[Android Head-Units] Drakey83:
I figured that, I guess my question is are any of these from Amazon or Newegg not the crappy Chinese clones? All of the ones I have seen that people have posted links to that have not worked seem to all be from AliExpress. looks like I'm just going to have to go fishing, lol.

ps the links have been fixed.
[Android Head-Units] ThePapabear:
Thanks, but i would have liked to go an easier way by getting the MCU somewhere else. ;)

Because 2.6.70 is changing the optic of the interface in a way i dont like, i would have to flash 2 times to get back to 2.6.62.

In between i tried all of the MCU files i got on my unit. Not one of them brought back the right behaviour of the volume knob. All files you can see at the picture i added to my post.

Some of them change the behaviour of the knobs:

0101 and 2101 - Knobs not working at all

4501 (all three versions) - Volume reacts to the knob on the left side of the unit (which would be fine) but only volume up works normal, volume down is not working correctly (changes one step down, but jumps up the step immediately)

2501 and 6501 - volume on the right knob, but mirrored funktion; the only change between them is, that at 6501 a app called "fuel" installs

If someone wants to have the files, i can upload them or send them.
[Android Head-Units] donaldta:
Btw, some of the links in the Amazon show "VAG-COM" cables. Those aren't the kind of interfaces you'd use with Torque Pro. They don't have the microprocessors inside which manage the ODB2 signals. Check this post by piemmm whom is Ian Hawkins, the developer of Torque.

I know that I have linked this many times before but just in case you missed it, here is a list of ODB2 adapters from Torque's Wiki. Here's also a post written by Ian noting the differences with ELM clones and the STN1110 which is inside of all the Scantool products and his findings on clones.
[Android Head-Units] donaldta:
Yes, the http://www.ebay.co.uk/itm/251451074367 listing looks like an AN-21U based on the specifications and the screenshots of the user interface. As for support, it is kind of a double-edged sword. On one hand you'll have someone "local" to contact; however, on the other hand the actual support comes from China so you'll be getting a middleman. In most cases, buying the product from a third-party reseller often implies that the support MUST be handled through them. That's because these manufacturers give discount pricing to resellers based on bulk sales and reduced support costs.
[Android Head-Units] Niclas.s:
Sorry, I think I am misunderstood. I Have not flashed my unit. I have the stock when delivered firmware.

I have the same front and os interface as [MENTION=5725568]B.Stromberg[/MENTION] on post #2103

My unit was deliverd with MCU 4.2.6.1-7-10-6501 and System version 2.6.70

I just told it to help you guys to find working software for same unit as post #2103

Only thing is my unit has stopped switch audio source by itself when i changing from radio to spotify for example. I have to open the music application to switch audio.

And i need manually open installer APK before i can install an app from google play.

So i just ask if i can do a factory reset to get it back to normal?

Or should it be restored if a reload software 2.6.70?
[Android Head-Units] maxxxis123:
Hello,

i ordered this unit,

how is the sound quality? my original unit that came with the car was really bad.

i understood from reading around that the head unit can be a "Bottleneck" in sound quality.

Thanks for help.
[Android Head-Units] PsychoMcSatan:
I've had the same odd behavior with the sound and was able to fix it by disconnecting the battery for a few seconds. I suspect it might also be fixed by pressing the reset button. It looks like the microphone but it's on the other side and you can use a paperclip to press it.
[Android Head-Units] donaldta:
Are you fscking kidding? Don't quote the entire original post. :mad:
[Android Head-Units] ohsobrown:
Android 4.1 car stereo

I'm new to this. Never posted anything on a forum before.

I'd just like to know if there's any good updates for the new unit I just installed.
[Android Head-Units] Drakey83:
Anyone looking to buy the ODB 2 Scantool USB adapter I found it for $34 on ebay!

http://www.ebay.com/itm/ScanTool-42..._Automotive_Tools&hash=item1e872b1d70&vxp=mtr
[Android Head-Units] nikolaib:
wifi problems

Hello everybody!

A month ago I bought a head Unit (aliexpress.com/item/100-Pure-Android-4-1-Capacitive-Touch-2-Din-Car-DVD-for-Toyota-Universal-GPS-Radio/1504035252.html). Quite decent device. Looks like it's a very close relative an "AN-21 U".

The hardware specification is identical.

However, it happened that the WiFi dongle has been damaged.

I unsuccessful tried to use some other dongles e.g. "ZyXEL NWD2205" (Realtek RTL8192CU), "NetGear WNA1000M" (Realtek RTL8188CUS).

Then I tried to determine the cause of failure.

lsmod shows:

$ lsmod

ntfs_3g 186713 0 - Live 0x00000000 (O)

mali 94915 8 - Live 0x00000000 (O)

ump 26175 17 mali, Live 0x00000000 (O)

$ ls /system/lib/modules

8188eu.ko

8192cu.ko

mali.ko

mt5931.ko

ntfs-3g.ko

ump.ko

There is no files like rtwifi.ko, mac80211.ko etc.

I took a chance to downgrade to firmware v.2.6.23 and then up to v.2.6.70 in the hope that there will be missing modules. Nothing has changed.

I suspect that the firmware adapted for use of one of exclusive type WiFi dongle.

I have the following questions:

1) This situation with the drivers just me or others too?

2) If there are differences, I can get all the necessary modules for wifi?

3) Somebody was trying to compile the drivers modules for "AN-21 U"?

4) MCU version is 4.2.5-1-30-2101. Where i can find latest mcu firmware?

I hope very much on your assistance.

P.S Sorry for my english (not native).
[Android Head-Units] Android_ski:
Just out of curiosity i emailed the ebay seller that i got my stereo from telling them that im having problems with it rebooting etc. They replied within two days and sent me a link for the new update...

"Please see this link:

http://www.cnkick.com/litb/Downfile/834541UPdata.rar

Nice day

Catherine"

Anyone wants to try it;)?

- newdealestore2012
[Android Head-Units] Black6spdZ:
I checked the file size and CRC and it matches the 2.6.68 update..
[Android Head-Units] veletron:
Sony Remote Commander RM-X4S

Hi

As per advice on here, I bought a Sony RM-X4S to use with the steering wheel remote inputs. Works well. Terminates in a 3.5mm stereo plug. I just cut up an old 3.5mm extension cable, and soldered to steering wheel cables and ground on AN-21. Ground goes on screen of cable other connections can be made either way around. Next/Prev controls are enabled for Poweramp my holding the OnScreen 'back' button on the radio app (see 1st page of this thread). Unfortunately, there is no play/pause control.

On another note, can anyone recommend PowerAmp skins / widgets for car use with the AN-21? I have tried a few, some skins don't survive restart (default skin gets reselected), and some Widgets don't re-display on home screen after a restart.

Also, has anyone played with /system/build.prop ?? Other threads for general android indicate that it should be possible to add/edit 'debug.sf.nobootanimation=1' line setting it to '1' to disable the boot animation. I am hoping to save a second or so on the boot time, but don't want to brick my unit!

Nigel
[Android Head-Units] B.Stromberg:
Hi!

Maybe more interresting is whats in the Subfolder

This File seem to be interessting?

http://www.cnkick.com/litb/Downfile/421645ROM_MCU2.10.6-1-10-12.12.32.zip

Seem to be an Android 4.xx Version. Also the Manual is quiet long.....
[Android Head-Units] Android_ski:
Is everyone running this firmware?
[Android Head-Units] flyboy1100:
Which radio do you have that has the 3.5mm input for steering wheel controls?

Speaking of steering wheel controls, has anyone put a an-21 in a subaru? I don't want to lose them, but I'm finding a hard time figuring out how they work
[Android Head-Units] donaldta:
It even matches the md5sum for 2.6.68 firmware.

CRC works fine for detecting random errors in data that might occur during transmission; like, network interference, line noise, distortion, etc. Using a hash function like MD5 is probably overkill for random error detection. However, using CRC for any kind of security check would be much less secure than a more complex hashing function such as MD5.

I wouldn't say "everyone" as some people have decided to avoid it for various reasons. But, it is one of the versions that is already available from the Wiki / Initial Post.

For a second, I had thought you were referring to the subfolder of the tar file. Didn't realize you were referring to http://www.cnkick.com/litb/Downfile/ URL. It looks like a file dump site for technical support. So, it is a veritable hodgepodge of cornucopia.

According to the build.prop within the system.img that's for the "Ouku unbranded" and it is 2.3.4, so it is not even relevant.

ro.product.model=imx53_smd
ro.product.brand=freescale
ro.build.version.release=2.3.4

How did you come up with the idea that it "Seem to be an Android 4.xx Version"?
[Android Head-Units] veletron:
Hi

I don't. I chopped the socket off a 3.5mm Stereo extension cable and soldered the end of the cable to the GND+SWC cables

Nigel
[Android Head-Units] donaldta:
Actually, most name brand stereo uses 3.5mm jack for steering wheel controls. That's why the Axxess SWC-1 comes with a male 3.5mm jack as the default connector and the female 3.5mm to two wires adapter is optional.

You can look up Pac Audio site and if they use the "white wire" from their SWC adapter in the instructions then it can be directly replaced with the Key1 wire. If they use a resistor to bridge two wires then you can use the Key2 in place of it. Otherwise, if you're still stumped let us know the model and year of your vehicle as well.
[Android Head-Units] flyboy1100:
Oh, so still would need an adapter interface?
[Android Head-Units] donaldta:
I think it is funny you had to reiterate that since it was already obvious in your previous post.

Btw, who gave the advice about the Sony RM-X4S?

---------- Post added at 11:41 AM ---------- Previous post was at 11:40 AM ----------

Maybe. What grade level is your reading comprehension?
[Android Head-Units] donaldta:
I agree and as I mentioned earlier it is also much safer and faster than the Bluetooth counterparts.
[Android Head-Units] KID52:
The Bluetooth ones are more of a gimmick in my mind, I spent $5 so I could read codes if they ever came up. As far as showing live data, it's pretty useless due to the delay.

You mentioned before that a USB one can be quite cheap, and a chipset that might work with this unit, so I may look for one of those at some point.
[Android Head-Units] JohnnyTightlips:
Is this unit going to get its own place in xda now that has been rooted? I am sure people are going to start baking their own roms in a few weeks.
[Android Head-Units] donaldta:
Probably not. I monitor several head unit threads that have much more pages than this one. Some them have over a hundred pages and have with users that have been pestering the admins over their lifetime. Unfortunately, these are still very much considered a niche Android product.
[Android Head-Units] jinny81:
Ive noticed a bug in mine where I had mx player and poweramp not outputting any sound.

Rebooting didnt fix it.

Ended up needing to open one of the stock apps like music/ipod/radio to get sound back. I think ill get tasker to do that job every bootup once i understand the bug better.

Also, due to the lack of instructions which came with mine (just only had a wiring diagram) - how do i use dual zone? kid52 says its only for dvd?

I checked youtube and found instruction for a different unit which didnt work. (play dvd, go home screen tap top middle on notification bar)
[Android Head-Units] KID52:
We have it rooted, but the firmware is still encrypted. I don't make custom versions myself, but I would assume this is still an issue as we don't actually have the system image file, unless we can generate one now we have root? But that still leaves the issue of actually installing it as the update function is looking for encrypted files. Maybe that can be changed, I don't know.

I don't have instructions either. It was implied to me that actual apps could be displayed on the external screens, but later I was told only the DVD, this was after I had put the unit back in the car so I couldn't test it. Honestly, I have no idea how to get it to function.
[Android Head-Units] bmj67:
I tried my USB scan tool with torque pro and can confirm that it does work. One problem though is that the live data will freeze sometimes . It could be my obd2 adapter or because I haven't updated torque yet.
[Android Head-Units] patrickoneal:
Even though I'm going to root immediately, I'm assuming that root wasn't required to get the USB OBD2 working.

How often does the live data freeze? Does it unfreeze itself?

Thanks.
[Android Head-Units] bmj67:
Not sure if it works without root I never tried.

The freezing is hit and miss. Sometimes it will unfreeze by itself other times i have to restart the app.
[Android Head-Units] sciallo:
Well, if you didn't have to grant SU privileges to anything to get it to work and you didn't have to install any module it would probably work without root. What model ODBII are you using? do you know what chipset it uses?