yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] xrapidx:
I just realised from your previous posts and this one that you have a Suzuki sx4 - and your radio doesn't work - I have a Suzuki Jimny, and my radio doesn't work. Coincidence?

My antenna is also the standard connector, and I bought an aftermarket antenna and tested it, but same connector as vehicle - maybe the connector is the problem?

Does anyone have a picture of their antenner connector? I'd like to see if it differs.

If I recall, the Jimny is GT2-8210 in this picture
[MTCB Android Head Units Q&A] optx:
My way to give it a try, make my Huifei the way i want to be the system.img (delete unwanted apps,root,...) and then make a system.img dump.

Without guarantee, but i dont see a problem, why it should not work.....

Best way is to ask 1-2-Hak, since he did something like this (rooted system.img), as far as i can remember.

I was looking for something like this too, but my Device has too much stuff inside now, so i dont think this is "shareable" ...
[MTCB Android Head Units Q&A] MuttzNuttz:
I have the HuiFei one for the E46 and the bluetooth links fine with my note 3 for calls and music, stores contacts from phonebook etc.

hope thats helps.
[MTCB Android Head Units Q&A] saifbarry:
Where are you located and where did you buy it from?
[MTCB Android Head Units Q&A] elcolombia17:
I was thinking on it and found a system.img rooted but i dont know if its 1.77 or 1.86. You know the way to connect unit to pc? Mine no have front mini usb port, only two normal usb port on rear

Other way could be, with rk3xxx app, use root option, today i will try it

Thanks in advance
[MTCB Android Head Units Q&A] 1-2-Hak:
Once I have a new rom loaded. I flash TWRP using bootloader.

I then boot to TWRP and use ADB to push su to /system/bin and chmod it to 755

Then push supersu.apk to /system/app chmod to 755

Reboot

Rom is not rooted.

Run supersu it will update su if required.

Download busybox from the market and install.

Download fx file manager - remove what ever bloat and add whatever you want from /system/app - install MTCRadioblue.apk :)

Modifiy build.prop to how you want.

now you have a custom system rom

To share this with others.

Reboot back to bootloader. Dump system.img

Share with us on this thread so we can all enjoy your custom rom :)
[MTCB Android Head Units Q&A] elcolombia17:
Sure about share, but i want to kkep stock bootloader, there is another way to make a system.img copy? Im thinking in adb commands. But need to know how connect my unit withouth front mini usb port :(

---------- Post added at 12:37 PM ---------- Previous post was at 12:32 PM ----------

Other way can be, know which files ares change/added when root apk is applied, extract from rooted rom, and put on stock system.img, but i dont know if is needed,too, change files permission
[MTCB Android Head Units Q&A] 1-2-Hak:
Hmm. OK

So you want to go impure - use the rootmaster...ok

Root using rootmaster.

Do all the other things after what I posted you are now rooted

Then install wifi adb

do a system dump using dd

you need to adb connect to the ip address the wifi adb shows you but run the commands as follows

http://forum.gsmhosting.com/vbb/f90...ow-dump-rom-rockchip-share-azimbahar-1754571/

pull it using wifi adb

Share with everyone :)
[MTCB Android Head Units Q&A] elcolombia17:
It can be the way. Today i will try
[MTCB Android Head Units Q&A] 1-2-Hak:
carpe diem :)
[MTCB Android Head Units Q&A] saifbarry:
I've tried alternate launchers. They work fine but I can't set them as the default launcher. I am planning to delete the built in launchers and see what the unit does with only one launcher (of my choosing) installed. Will post back if/when I do it. Kinda busy right now.
[MTCB Android Head Units Q&A] sir sniffalot:
Hey that was fast work. Thanks!

I had frozen carservice apk before my poweramp days because I kept getting a 'carservices has stopped message'. :rolleyes:

Defrosted it and installed your new XposedMTC beta and buttons are working. Sound through all four speakers now too after cycling through MODE button (and AVin).

However a couple of issues:

1/ 60-70% of the time when I press MODE button system reboots (I guess a bug or two somewhere)

2/ When I cycle through MODE button it pauses the current track and when I get back round to poweramp again track starts from the beginning again. Is this poweramp doing this or something else?

Thanks again!
[MTCB Android Head Units Q&A] typos1:
Interesting, I ve never heard of that before, wonder if its something Samsung has done, or new Bluetooth protocols, or just that no other manufacturer can be bothered to add the extra functionality.
[MTCB Android Head Units Q&A] Navall2:
I did my rooting using RootMaster 2.1.1 - However, it anoyed me that I did not understand the gibberish on the screen - it was all try and error. Albeit I got help from this thread.

I have now searched the web and found this:

http://vroot.co/

Has anybody got any experience with this App?

It appears to be the "same" as rootmaster, but the version is 1.7.6.
[MTCB Android Head Units Q&A] nodymoha:
Saudi Arabia, One of the stores near Al-Amoudi.
[MTCB Android Head Units Q&A] saifbarry:
Al-Amoudi has an update version 1.85. You can ask them to update it.

I have also contacted Roadmaster and asked for an update. They haven't yet replied.
[MTCB Android Head Units Q&A] idr3s:
Got the same issue here.. for me the AVin app shows a yellow "!" (Error) sign in the middle.. I think the app could be corrupted..

Anyone with any input on this?
[MTCB Android Head Units Q&A] agentdr8:
I had posted a few pictures of the backside of the faceplate. There are 4 through-holes below the volume knob where the miniUSB port would normally be. I didn't do any actual tests to see if they were connected, but given that most of these boards are all the same, I can't see why they wouldn't be.

---------- Post added at 08:20 AM ---------- Previous post was at 08:16 AM ----------

1) Sounds like a bug. Can you enable Debug in prefs and then send me the error.log from Xposed?

2) I'm actually sending the stop/start intents for Poweramp/Playerpro when the mode switches to another source that has audio output (line (aux), dvd, radio, ipod). Otherwise you end up getting audio output from both at the same time. Which options do you have enabled in the mode switch? I can figure out if there's an extra stop command that shouldn't be there.
[MTCB Android Head Units Q&A] dcmouser:
My AVin (which has no audio) also shows the yellow ! error.

It's possible that error is just saying that there is no audio is detected on the line -- and it *might* be because the AVin is expecting signal from the rear rca wires as opposed to the front jack which may be unsupported.. or it might be a problem with the app as you say.
[MTCB Android Head Units Q&A] ProfessorKnox:
Highly likely the yellow ! sign appears, because there is no or no valid AV signal connected to the AVin input. Similar appears on my radio when activating the TV app with the TVbox (connected to the 10pole input at the back [Note: HuiFei derivate Erisin ES9401]). For about two to three seconds the yellow ! sign appears and disappears when the TVbox delivers a valid AV signal.

Hope this helps!
[MTCB Android Head Units Q&A] kwalsh24:
Sorry for bringing up an old issue, but did I read it right that in order to flash the 1.77 kernel that you need to unlock the bootloader? Seeing how my system doesn't have a front USB port I don't think that's possible? I did try to flash the kernel via the instructions listed but nothing seemed to happen
[MTCB Android Head Units Q&A] agentdr8:
Nope. The bootloader is apparently not locked. If you use the /system/bin/flash_kernel binary, it basically does a dd to the kernel partition. It doesn't seem to output any success or failure info, so it appears like it isn't doing anything. Just verify the build info after you reboot and you should see the build date from the 1.77 system image.
[MTCB Android Head Units Q&A] kwalsh24:
Hmm yeah I did that, and it didn't give any statement of doing anything, so I rebooted and nothing changed in the info, will try again and see,

Anything special I need to do? Just place the kernel file on the internal SD and run the command?
[MTCB Android Head Units Q&A] optx:
I did it like this with the ADB Konnect apk :

- adb push kernel.img /dev/

- adb push flash_image /dev/

- adb shell

- chmod 755 /dev/flash_image

- dev/flash_image kernel /dev/kernel.img

This way i got confirmation that the partition was written..

I had to use a other flash_image, since the one that was on the device gave me errors ..
[MTCB Android Head Units Q&A] kwalsh24:
Hmm thanks, now where exactly should I store the kernel file itself lol, sorry semi noob with adb
[MTCB Android Head Units Q&A] idr3s:
Thnks for the reply...

Come to think of it I do have the same yellow sign for "TV" where I haven't connected anything.

So I do believe that the AVin app actually is looking for signals from the RCAs at the back, rather than the AuX port in the front (as u guys said before).

Though could there be any alternative app that could be used here then?

Has AVin worked for others as Aux input?

I'm running a KGL-4..could the prob be only in this version?
[MTCB Android Head Units Q&A] optx:
For this method, i just went with my terminal on the PC to the folder where i did put the files and then started the commands ;)

This are the files i used on my KGL-76988G/KGL-8401G, should also work for you. (flash_image). The kernel should be the same that you have, but you can replace it with yours.
[MTCB Android Head Units Q&A] kwalsh24:
Cool thanks! This definitely should be noted forvthe wiki or on the OP
[MTCB Android Head Units Q&A] 1-2-Hak:
OBD2 is for torque yes.So there must be some issues there they are fixing.

recovery.img only contains the recovery boot not a recovery rom.

Not sure why TWRP didnt work - nothing is actually locked so it should have access. Maybe the init.rc in the TWRP recovery.img need to be massaged for this unit. Might be worth looking in there. Otherwise give the CWM a go.

Will be interesting to see some custom roms for this now :)

---------- Post added at 10:54 PM ---------- Previous post was at 10:51 PM ----------

Another thing we could do to make like easier is pre root the system.img

If some one wants I can try but cant test without the unit.

The you can just flash up the img to get root.
[MTCB Android Head Units Q&A] webdude12:
My Torque worked fine. Wonder if they are trying to pull OBD2 data from the Canbus. This is possible, and could be a cool feature
[MTCB Android Head Units Q&A] 1-2-Hak:
Are you using USb or Bluetooth for the connection?

What version of TWRP image did you use when you tested it?
[MTCB Android Head Units Q&A] drt1394:
No sound input?

Rooted and connected to the android debug shell, thanks for the help so far guys!

Trying to sort through my issues 1 by 1. First issue: voice search was crashing any app that tried to use it. Solved this by installing the Voice Search app from the google play store. Now it looks like voice search just doesn't work. Logcat is giving me "cannot open pcm_in". Looks like there are no capture devices in /dev/snd. Worried that this means that the microphone isn't available to the android side of the unit. Hmm. Anyone have audio input working on the android side of things on one of these guys?

Other issues:

Wish I could remap the buttons. A hard home button would be very useful.

Illumination doesn't work. Haven't tried to track this down yet.

Play, pause, forward, back buttons seem to only control connected bluetooth device, NOT android apps. Is everyone else experiencing this? Another issue that is a pretty big one for me that I'd like to get working.

Won't connect to my iPhone in tethering mode. May be an issue with my jailbreak, as it connects to my non-jailbroken iPad perfectly fine

Suspend Mode: if I turn off the unit and turn it back on within a few seconds it doesn't reboot. Wish I could extend this to like 24 hours. Shut off the amp and leave the android side running

No Low pass filter for speaker outputs.
[MTCB Android Head Units Q&A] cesmichel:
Install new appli GPS

My Car radio KGAC-7682 on Mercedes has a 'NAVI' button, I installed Igo Primo, how to make the 'NAVI' button launches Igo Primo?

Thank you
[MTCB Android Head Units Q&A] webdude12:
I was using Bluetooth.

Here is the recovery I was able to get to Flash, but like I said no partitions would mount.

http://www.freak-tab.de/abdul_pt/TWRP/Generic/TWRP_2.7.0.0_800x480_rk3066.img
[MTCB Android Head Units Q&A] typos1:
Its not the WD8801 is it ?
[MTCB Android Head Units Q&A] webdude12:
No, I have seen no mention of this unit on xda at all, which is why I'm waiting to validate it before linking to it
[MTCB Android Head Units Q&A] _StormZ_:
Looks very nice. Just wish the res was higher. How is the reliability of these units?

---------- Post added at 01:43 PM ---------- Previous post was at 12:47 PM ----------

This unit is apparently 1024*600:

http://www.aliexpress.com/store/pro...0P-3G-wifi-dual-core-1/312153_1727940771.html
[MTCB Android Head Units Q&A] Orisai:
There's something about that unit I don't understand.

In the rear panel there are 9 RCA type jacks: 2 video outs and 1 rear camera input, 2 "RCA" audio jacks, 2 AUX inputs, and another 2 yellow video inputs/outputs?.

What function does the "RCA" have? I don't think it's for an amp unless it's mean for an 1 channel mono amp. Speaker channels would require at least 2 more pairs of RCA audio jacks, which this unit doesn't have.
[MTCB Android Head Units Q&A] Zaphod-Beeblebrox:
I haven't purchased one yet. Like Webdude, I'm trying to hold out for a 1024*600 unit. The WD8801 is the only unit with 1024 I've found so far, and if you read through the thread associated with it, it's riddled with other problems.

The SharingDigital one is not 1024. I've e-mailed the seller on that and he claims the listing is faulty. I kid you not. One of the big reasons I'm leary of AliExpress.

Have no idea. Possibly mislabeled.
[MTCB Android Head Units Q&A] pakidermo5000:
Regarding the Mic. I fear it is basically attached to the MCU, so Android does not know it exists. I use the audio input, to input external audio source. To do so, you have to use the application (AV-in). It looks like jit is again a MCU based app, like bluetooth.

- Agree. You can do like webdude and remap GPS button to an app to show home. It should be possible to remap the other buttons, too. Maybe the first ROM will have that feature.

- What do you mean by illumination? Do you mean brightness ? I had to change a resistor of the touchscreen to get mine to work. Anyway, the lowest brightness is not low enough for night use, and I ended up installing an app to dim the screen. I recommend "Darker". You can automatize it with Tasker, and make it dim progressively along the day time. If you have Darker Pro, you can do the same without tasker.

- sorry not an Apple user.

- I am actually thinking on the same line as you here. I think it would not be that difficult but you will need a hardware mod to your car. I am planning on installing a delayed power cut to the unit. the problem here is to tell the unit to go "sleep" when stopping the car. By the way, if you have the unit working more than 5-6h it will kill your battery. So, I would just do it for 30min max.
[MTCB Android Head Units Q&A] pakidermo5000:
Probaly there are 2 CAM inputs (1 for rear camera and 1 for front VCR) and then an ouput for headrest screens.
[MTCB Android Head Units Q&A] drt1394:
Yea, thats my worry too.Probably not any way around this either if there is no sound capture device. Although I'd like someone smarter than me to confirm that this is the case and not just a weird asound config bug or something.

Anything is possible, its just a matter of how difficult ;). My guess is that all button presses go through their mcu driver. My real goal would be to sniff the communication between the MCU and Android processor (RK3066) and create my own custom driver so that we aren't relying on their binary in any future custom ROMS. Not sure how feasable this would be though. Looks like all the GPS communication, as well as a ton of BlueTooth commands run across that so may not be reasonable to recreate it.

Button illumination. Not sure all units have this. Mine is the model for BMW e46's.

Thinking android sleep mode should be able to run off the battery for days without really killing it. Not sure if we have access to enough of those power saving modes though. Just wish we could get access to the code for these units. The hardware seems plenty decent (with the exception of the screen resolution), the shortcomings seem to mainly be software based.
[MTCB Android Head Units Q&A] Cruze2012:
internal mic

Let me first say that Keylo told me my unit was not from their factory. However, it has all the same specs and wanted to comment on the ineternal mic reference. The Bluetooth quality was not very good and wanted to here the sound for myself, so I downloaded a voice recorder app to hear myself speak on it. I was able to hear myself through the voice recorder app, so I believe the mic should would with other apps...correct?
[MTCB Android Head Units Q&A] drt1394:
Mind sharing a link to or the exact name of your voice recorder app? I can give it a shot on my unit and see what it does. If that works then yes, the android side definitely has access to the mic.
[MTCB Android Head Units Q&A] xantonin:
I'm still reading through this thread but I wanted to throw out my question:

Can I use T-Mobile for the 3G?

Can I connect HD Radio?

Sattelite radio?

Thanks if anyone can answer.
[MTCB Android Head Units Q&A] jereid:
Quick shipping from HK.

Just got notice that my unit shipped, and is being delivered by DHL tomorrow. Very good communication so far, and everything has been to schedule. It was shipped from Hong Kong the 13th, cleared customs today, and will be delivered to rural Michigan Tuesday (according to DHL tracking). I was expecting much, much longer on shipping/customs/transit time.
[MTCB Android Head Units Q&A] webdude12:
On the unit I had the internal mic worked just fine with Android. I had Google Now working without any issues. I even ran the Google Now Launcher for a little bit, before switching back to their stock launcher, as the internal mic did not see the radio output, so if was on the radio, you had to scream "Ok Google" at the top of your lungs to get it to work, since it it did not know to mix-minus this output.
[MTCB Android Head Units Q&A] Cruze2012:
internal mic

The Google play app is "Smart Voice Recorder" by Smartmob Development.

I'll also add the the internal mic on my unit is terrible and will be adding the Metra wiring harness to get back factory bluetooth, Onstar, warning chimes.
[MTCB Android Head Units Q&A] optx:
If you can wait, then i can make a howto with pics.

Should be ready tomorrow ...
[MTCB Android Head Units Q&A] kwalsh24:
Cool, likely wont get to it till then anyhow hah, thanks!
[MTCB Android Head Units Q&A] jayvan:
I was getting the System UI errors long before I installed GALA and any of the other mods/apps that you guys have contributed to the group. I'm going to uninstall Torque and see if that solves it (since my OBD doesn't work with this unit anyway). The System UI errors are a nuisance, but they eventually can be dismissed. Just takes the unit longer to boot...
[MTCB Android Head Units Q&A] kwalsh24:
Hmm mine were occurring when I had dowmlaods trying to download when a wifi connection would drop out, and on every reboot the download would keep attempting to continue one with or without internet connection
[MTCB Android Head Units Q&A] typos1:
Surely if youve installed TWRP then you can do it all on the device and theres no need for ADB ?
[MTCB Android Head Units Q&A] sir sniffalot:
Reply:

1/ error log attached

2/ I have tried a few options with the mode switch as I thought there might be an issue with one (or more) source but haven't fully tested the theory myself. I am currently using aux, dvd, navi & video on mode switch (though I don't really need the option of dvd & video so will probably end up with aux & dvd only).
[MTCB Android Head Units Q&A] sir sniffalot:
I've been using GALA for about two weeks now and I've had no issues with System UI errors.

Well, I have had System UI error appear a once or twice but that was during reboot when uninstalling XposedMTC/installer.
[MTCB Android Head Units Q&A] elcolombia17:
Well, finallt i can connect with adb by wifi, today i finished to clean the rom and add youtube, tried to preroot (copy superuser.ak to system/app with 775 permission and su to system/bin with 775 too)but when rom start and open supersu say me about no libraries.maybe something wrong?

Can make a system.img by adb, but tomorrow i hope to spend some time on it. Thanks in advance and hope somebody can upload the rom when done. I no have any ftp server

Pd:today root a test mod rom and root apk install kingroot and no superuser....
[MTCB Android Head Units Q&A] ProfessorKnox:
I don't have a front AUXin but just AUXin RCAs at the back side. These are the corrsponding audio in channels for the AVin RCA (also on the back side). I just have tested AVin app and yellow ! sign disapears when video signal is present. But independent of video signal present or not, belonging audio is emitted on the speakers. Thus I can connect audio-only devices - but with the inconvenience of the yellow ! sign.

Thanks for considering my post.

BTW. If you like, have a look at my next post - and find out what I just found out by chance when testing AVin.

---------- Post added at 11:56 PM ---------- Previous post was at 11:30 PM ----------

With post #2651 I shouted out that I have problems with my DTVbox (no on screen menu when touching the screen). While evaluating this issue - I have my radio on my kitchen table.

Today I read post #2759 and follow-ups about AUXin/AVin issues.

So I tested AVin/AUXin with my radio to give some feedback an help.

For this I connected my VCR to the radio.

When using the IR remote control of my VCR I also controlled the radio!!!

Means - at least for HuiFei derivate Erisin 9401 the IR eye is connected and working.

E.g. my VCR remote control's "Exit" key caused radio's muting on/off and remote control's "Menu" key caused radio shutdown/startup.

If someone is interested I can further evaluate this - but how can I (simply) find out the IR codes emitted by the remote control in order to use the codes for controlling the radio? Obvioulsy an Android IR code analysis app installed on the radio itself would be most covenient way, but don't know whether such exists.

Have fun with your HuiFei.
[MTCB Android Head Units Q&A] typos1:
Never got round to replying to this, but just did a broadband speed test on my phone using wifi so was reminded of it.

I sure can see its easier if your router is downstairs and the pc upstairs. Although I have to say, its not that much hassle to run a cable up the wall, no need to "open" them lol.

Anyway I got 14mb/s best (with 2 results of 7mb/s and 8mb/s) with my phone 40cm from the router, wasnt happy as I m paying for 50mb broadband.

Did the test on my pc (hard wired) and the result was 55mb/s !!

Even I didnt expect so much difference, hard wiring is virtually 300% faster !!

---------- Post added at 11:05 PM ---------- Previous post was at 11:01 PM ----------

"libraries" ? do you mean su binaries ?
[MTCB Android Head Units Q&A] ProfessorKnox:
Didn't see any feedback on that.

This thread is growing so fast and such a lot of various topics discussed amongst all the different models and variants, so that I just can support sprfly's idea - otherwise I fear confusion increases and we loose track sooner or later.
[MTCB Android Head Units Q&A] elcolombia17:
Yes, sorry my mistake