yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] agentdr8:
Not sure how you'd go about debugging this; most of the android BT tools assume you've made a successful pairing first. Since the BT module is controlled by the MCU via serial, it's unlike how most android devices handle BT devices. You might be able to figure out what serial commands need to be sent to the module from the datasheet on the BlueCore, but I don't recall seeing that info.
[MTCB Android Head Units Q&A] geezi:
Awesome will try in the morning again...

So even though swc settings hasn't started I can skip next/previous once iv copied the install-recovery.sh successfully ???

Usually a prompt will come saying "swc settings started" then only can I skip next/previous and that takes from 30seconds to like 3minutes sometimes it wont even start after boot

Thanks
[MTCB Android Head Units Q&A] geezi:
"swc settings started" -- that's the message that comes up when "mtcservice-async" is started
[MTCB Android Head Units Q&A] n0ble:
Installing updates from GPS slot issue.

For some reason if i try to install upgrade from SD Card in the GPS slot, upon reboot into recovery the unit does not find the files on the card and fails to mount the card. The card is FAT32 and have even tried different cards.

If i place the upgrade file on a USB stick it works fine, but does not upgrade my MCU even with it in the root. Any ideas on this one?
[MTCB Android Head Units Q&A] Jobyteknik:
Ok, this seems to be a bit more complicated than I was anticipating.

Let's see if I got this right.

Because of different hardware different APIs are used from Android to MCU compared to normal. The manufacturer only implemeted minimal support to handle phones and ODB adapters.

With a 'custom' pairing app it might be possible to send the right commands to MCU and complete the pairing.

Once pairing is done it is likely that my MaxxECU app will work.
[MTCB Android Head Units Q&A] haxigi:
Ok thanks. I found answer for almost all my questions but i cant find solution for starting Radio, before the android boot completly up.

I have now android 4.4 and MCU GS 2.08
[MTCB Android Head Units Q&A] agentdr8:
Something like that. But if the MaxxECU uses a BT profile that these headunits don't support (such as OBEX), I doubt it would work, even if you can get past the pairing hurdle.

I'm not positive on which ones are supported though, aside from Headset, A2DP, and SPP.
[MTCB Android Head Units Q&A] a0k47:
Anyone ever find any good speedometer widgets? Most of the ones on the google play store dont work, and the other half are really ugly. Anyone have any suggestions of where to find one?
[MTCB Android Head Units Q&A] DRidilla:
Funny I had that wonder too, if there was anyway to get the radio app playing as quickly as possible while the android section was still loading.
[MTCB Android Head Units Q&A] devin2:
New with you and my car radio WITSON W2-A9240V

HI all

I buy and receive this car radio :http://www.witson.com/en/displayproduct.html?proID=102169862

BUT....

Impossible to root it ( android 4.4.4 )

Reverse camera ok but Front camera is inverse ( left on right and right on left ... )

Always Android play store hangs....

Led colors can't modify....

The Firmware of this car radio is : MTCB-KYD-V2.18 Mod S07

Do you think that I can use a KLD Firmware ????

thx for yours replies...
[MTCB Android Head Units Q&A] pakidermo5000:
Most of your answers here --> http://xdaforums.com/showthread.php?t=2660662

PS: KLD usually have only one led color.
[MTCB Android Head Units Q&A] typos1:
I ve taken apart the front on my Klyde and its different to yours. Some cars have a rheostat that varies the brightness of the dashboard LEDs, sounds like yours has.

---------- Post added at 10:54 AM ---------- Previous post was at 10:52 AM ----------

On my Klyde they just pull off, but it maybe different for different manufacturers or even different for different units from the same manufacturers.
[MTCB Android Head Units Q&A] harlequin69:
I have requested a sub-forum for our devices please show your support on this thread my post is #17161 if you want to quote it.

Cheers
[MTCB Android Head Units Q&A] typos1:
Its been asked many many times, but the powers that be have not allowed it.
[MTCB Android Head Units Q&A] harlequin69:
I asked last night and a mod suggested to request it in that thread, can't hurt to jump in and hit like or quote me in agreement if we show enough people interested they may change their mind. Can only hope.
[MTCB Android Head Units Q&A] typos1:
Yes but many people have already done what youve done and then others have quoted in agreement several times in the year this thread has been running, but its still not happened.

What would be good is an Android headunit section, with a forum for all the head units and then sub forums within each one for different things, like hardware mods, rooting, updates etc.

But its kinda too late now anyway, as even if this was granted, someone would have to go through the whole thread and separate out all the posts that relate to each subject.

Phones like the Galaxy range for instance, are gonna sell millions so they get their own forums with different sub sections straight away, but these units arent going to sell that many, they are a niche thing (for now at least) and niche items dont automatically get their own forum and sub forums.
[MTCB Android Head Units Q&A] RaZi3L_:
+1 Done.
[MTCB Android Head Units Q&A] haxigi:
is there possibility to move su binaries via terminal? i installed superuser apk, and terminal. Binaries are on sdcard but i would like to move it into xbin folder and replace. Android 4.4

I dont like these rooted custom roms and i need root for viper and XTC app (i dont have root now and it seems not to working) [MENTION=853627]coudu[/MENTION], [MENTION=3590033]Malaysk[/MENTION], [MENTION=6041319]dsa8310[/MENTION]
[MTCB Android Head Units Q&A] typos1:
The only way to root KK is with a pre-rooted ROM, coudu's is very near to standard, if you are unhappy with whats available I m afraid your only option is to take the standard ROM and root it yourself by injecting the necessary files.
[MTCB Android Head Units Q&A] haxigi:
acctually i downloaded android 4.4 rom, extracted update.img, then system.img and injected SU and superuserapk, now i have to pack it again, then will check if it work. If yes i will upload it for you guys.

Quick question. What im doing wrong? I tried to connect my HU at home so i pulled out RED, ORANGE and YELLOW wire, connecter to the + 12V, took out BLACK and connected to the -12V. HU start but after booting, when should come out menu it restart.

Battery generate 12,9V so its enough power :/
[MTCB Android Head Units Q&A] typos1:
Thats how I connect mine on the bench, cant see what the problem is there.
[MTCB Android Head Units Q&A] haxigi:
i noticed also that in car it doesnt make any noise, at home he's buzzzzzing :D
[MTCB Android Head Units Q&A] typos1:
Hmm, that doesnt sound good, I d try another power source.
[MTCB Android Head Units Q&A] PereVerti:
Done :)
[MTCB Android Head Units Q&A] pakidermo5000:
Maybe we could try to join forces with other threads like AN-21U, S100-S150 or the other head unit (do not remember the name) quad-core... something.

--update--

I have sent an email to the OPs of these threads:

http://xdaforums.com/wiki/Generic_Android_Head_Unit#TCC8925

asking them to support the proposal of having a dedicated forum for android head units.

If you know of any other unit, please tell the OPs, or simply post there the link http://xdaforums.com/showthread.php?t=1660354&page=1717

so that we get visibility.
[MTCB Android Head Units Q&A] Tomcsyy:
Torque OBD adapters

Hi,

I have a HU with 4.4.4. Torque works great with BT obd adapter.

I use this type in the first photo.

I bought an USB-obd adapter too (check in the second photo) but it doesn't work for me.

What kind of USB-obd adapter are U using? :)
[MTCB Android Head Units Q&A] harlequin69:
I can see the +12v being correct but not the -12v, black should be ground as opposed to negative voltage rail right?
[MTCB Android Head Units Q&A] haxigi:
Does XposedMTC need root access? Acctually i changed default music app to Proamp but still afterr connecting usb stick, music.apk run at first.
[MTCB Android Head Units Q&A] pk313:
hey

I can suppose nobody try somethink like this,

...any suggestion will be appreciated in any case

thanks to all..
[MTCB Android Head Units Q&A] typos1:
Theres the Ownice and Newsmy units, both RK3188 quadcore. Its a good idea, but for it to really mkae any difference to us in this thread, like I said, someone would have to go through the whole thread and separate all the posts into relevant sub forums, a lot of work !

I forget the spec for USB, I had trouble finding one but a few people in here have found some that work, best thing is to use thread search to find what type.

Ground and -12V are the same, 12V cars are negative earth nowadays.

Yep Xposed needs root access.
[MTCB Android Head Units Q&A] haxigi:
That really sucks :/

anyway: http://xdaforums.com/showpost.php?p=56847941&postcount=5046

First link doesnt work (its 800x resolution version right?)
[MTCB Android Head Units Q&A] typos1:
No, thats Malaysk's custom ROM with loads of modifications, the nearest to stock is coudu's, theyre on the fileserver, link on first page.

Xposed heavily modifies lots of settings so its gonna need root, no one else has complained, once you root you wont want to ever not have root, after all, youve paid money for a device, so why shouldnt you have full control over it?
[MTCB Android Head Units Q&A] ced60:
radio problem

hello,

radio: GS 2.20 mcu, kitkat .4.4.4

My problem is always the radio does not work. I already did:

- Verification of the connection of the internal antenna (in radio) and external.

- I have several times updated the MCU and Update.

I noticed when the car radio is on, all device around disconnected wifi

Do you have any idea what I could do? update the kernel? the kernel is compatible with all car radio?

Thank you in advance
[MTCB Android Head Units Q&A] haxigi:
Go to factory settings and check different radio applications and if the radio region is correct
[MTCB Android Head Units Q&A] Jobyteknik:
I will try to figure out what BT profile MaxxECU uses.

Is it possible to make an USB BT adapter work on the headunit USB port? Or would that just open a bigger can of worms?
[MTCB Android Head Units Q&A] agentdr8:
Technically the XposedMTC module itself does not require root, but to install the Xposed Framework does. Once you've installed the framework, you can theoretically unroot your device and still utilize all modules that don't require root access directly.

And to address your issue, the module only replaces which music app is launched when using your steering wheel controls (or via the additional launchers). If you don't want MTCMusic to open your files, either remove it from /system/app or uncheck the option in Settings->Storage for opening SD/USB devices upon insertion.

This has been asked before, but I don't think I've seen any responses. I've never seen Android natively support a USB BT adapter, but I suppose it could if there are drivers built into the kernel (or dynamically loadable). How would you select one adapter over the other?
[MTCB Android Head Units Q&A] haxigi:
And how to start radio before android boot up? I saw that when Radio is on, i go to recoverymode, radio is still working and playing radio stations. Also i saw a video on youtube, that radio is starting 2 seconds after headunit start, but still before android boot up
[MTCB Android Head Units Q&A] typos1:
Try what haxigi says, also in factory settings try all the radio chip types, it may be set to the wrong one.

---------- Post added at 06:22 PM ---------- Previous post was at 06:20 PM ----------

The Newsy NU3001 has 2 BT modules, one for Android and one for the phone, although I guess its standard Android BT plus the MCU one for the phone.

I ve had Android TV boxes that have no BT but support BT dongles when plugged in, so it maybe possible.

---------- Post added at 06:23 PM ---------- Previous post was at 06:22 PM ----------

Try it and see.
[MTCB Android Head Units Q&A] ced60:
I had already checked but I forgot to note.

Settings in factory settings are :

Europe and TEF6606/TEF6624
[MTCB Android Head Units Q&A] Us-Marshal:
Youtube review/demo Klyde S07 6.95

If anyone is interested in checking out a video on the Klyde S07 here's one: https://www.youtube.com/watch?v=TIeQHTiuHSM
[MTCB Android Head Units Q&A] a0k47:
hey guys, would love to see everyones home screen and what widgets/wallpaper/icons people are using!

Post them here:

http://xdaforums.com/android/themes/post-vehicle-home-screen-t3038585
[MTCB Android Head Units Q&A] haxigi:
Hi again.

Well acctually i tried to create my own ROM. Like i was expecting - it doesnt work. What have i done wrong?

1. Downloaded clean android 4.4 rom from google drive

2. unpacked update.img with imgRePackerRK

3. extracted the system.img with ext4_unpacker

4. downloaded clyde rooted rom 4.4

5. unpacked it with imgRePackerRK

6. extracted the system.img with ext4_unpacker

7. copied su binaries from clyde's xbin folder to mine xbin folder

8. copied superuser from clydes app folder to mine app folder

9. compiled it to system.img with this tutorial: http://xdaforums.com/showthread.php?t=1588461

10. packed new rom with imgRePackerRK

11. copied new update.img to sd card

12. installed new rom without any problems

13. on reboot HU stuck on "Navigation system" screen

:(

[MENTION=3590033]Malaysk[/MENTION] [MENTION=853627]coudu[/MENTION] [MENTION=1249599]zorantoma[/MENTION]
[MTCB Android Head Units Q&A] patoca:
KLD Backlight

Hi Folks, I´ve just installed my klyde stereo, and updated to MCU 2.2 with coudu ver 4.4.4

I would like backlight to be red as the rest of my dashboard (VW Jetta MK6).

Any clue on how to change it from light blue to red?

Thanks!
[MTCB Android Head Units Q&A] haxigi:
Settings - Colors, Illumination or something like this
[MTCB Android Head Units Q&A] starfox5194:
Has anyone experienced a static/interference noise when they turn the head unit's volume up to about 12 or higher?

It was happeneing when I listened to bluetooth music, but now it happens even when I listen to music off of an SD card.

The only thing I've found in the thread about this is about the bluetooth wiring. I did end up enabling always on google now, so I think that might have to do with it. (always having the front mic on.)

I'll keep tinkering, but if anyone has any ideas please let me know.
[MTCB Android Head Units Q&A] agentdr8:
I get static every now and then. It usually goes away if I hit the reset and let it boot up again. I just assume it's the crappy internal amp; maybe someone with an external amp can comment on if it's ever happened to them.
[MTCB Android Head Units Q&A] Malaysk:
here are using this program http://www.slatedroid.com/topic/101873-rk3xxx-firmware-tools-by-sergiopoverony/
[MTCB Android Head Units Q&A] devin2:
Hi all

I test the coudu update for KLD = Ok but I loose the sound control...

I test the coudu update for KGL = OK but I loose the sound control..

I test the coudu update fot JY ( seem t have the same launcher than my original ) = ok but always loose sound control...

Always also only one (red) back color.

A idea ?
[MTCB Android Head Units Q&A] kalle99:
You have to see that "RGB" is checked in factory settings, PW 126. Then go to Settings -- Elements. There you can change it if you have rgb-leds in your unit.
[MTCB Android Head Units Q&A] CARRisma:
[MENTION=4344041]komir[/MENTION] I see you've fixed your Sygic so this is just for your info and anyone else who might be experiencing the same problem. I'm reluctant to try that workaround you have used, especially as someone here reported it containing a virus.

Regarding my earlier post that Sygic continued past the "Manage Maps" screen with a 3G dongle connected and I wondered whether Sygic had fixed the problem behind the scenes and the 3G dongle was just coincidental. I've since discovered that it wasn't coincidental. Now, if I start Sygic without a 3G dongle connected, Sygic insists on downloading again maps (already downloaded) but the progress indicator doesn't move so comes to a halt. If I start Sygic with a 3G dongle connected, it starts up OK. So Sygic only works on my JY HU with a 3G dongle connected. Makes me wonder why? Is the 3G dongle providing some sort of region info?

Once again, I've emailed Sygic. If they don't reply or can’t fix it, I'll ask for a refund and will probably try Nokia Here.
[MTCB Android Head Units Q&A] patoca:
Mute when reverse

Hi Folks, is it possible to change config to avoid going to mute when I select reverse in my car? I have reverse camera and works fine, but would also like to keep having audio whith reverse selected. Thanks!
[MTCB Android Head Units Q&A] CARRisma:
[MENTION=6284640]a0k47[/MENTION] let me know if you find a decent speedometer widget. I want one too.
[MTCB Android Head Units Q&A] harlequin69:
Very first post... lots of good info in there make sure you read it.
[MTCB Android Head Units Q&A] ced60:
The settings in factory settings are:

Europe and TEF6606 / TEF6624

Logically it is the proper settings.
[MTCB Android Head Units Q&A] haxigi:
Try this: https://www.youtube.com/watch?v=l37ILq_mZ3g

---------- Post added at 01:11 PM ---------- Previous post was at 12:47 PM ----------

Hi, while extracting i have this error: uncorrect name or FW patch, space character was found.

i selected update.img and would like to get to the system.img

when in single tools i select system.img then have same error
[MTCB Android Head Units Q&A] ced60:
The settings in factory settings are:

Europe and TEF6606 / TEF6624

Logically it is the proper settings.

I have already installed antenna amplifier. The problem is that I do not even have noise "chhhhhh" is complete silence when I'm on the radio application.
[MTCB Android Head Units Q&A] haxigi:
had same problem, then downgraded to android 4.2, noise came back so i changed again settings in factory settings, pressed Apply and thats all
[MTCB Android Head Units Q&A] ced60:
How to downgrade? the MCU must also downgrade it
[MTCB Android Head Units Q&A] terzo33:
hi, someone has the instruction manual of Huifei 4.4.4? thank you very much
[MTCB Android Head Units Q&A] haxigi:
Only android. Dont need to downgrade mcu. If android version wont help, try to downgrade mcu to gs-2.08

http://youtu.be/C3Zn2JdGVCI

Or easy way

http://youtu.be/QfiitMdDYhA
[MTCB Android Head Units Q&A] typos1:
Wouldnt hurt just to try the other radio chip types, just to make sure it isnt that.

Would also be an idea to open the unit and check the radio IC is actually connected.

---------- Post added at 01:55 PM ---------- Previous post was at 01:53 PM ----------

Seems like its telling you that you have pressed the space bar at some point when you shouldnt have and some file name has an incorrect space in it.

---------- Post added at 01:56 PM ---------- Previous post was at 01:55 PM ----------

His problem is that there is no sound at all, not even a hissing noise, so an antenna adapter and downgrading is not likely to help him.
[MTCB Android Head Units Q&A] haxigi:
1. Well incorect rom isnt possible because i downloaded it from google drive. Also im not pressing anything :/

2. I got same problem than he so maybe this will fix his issue too ;)
[MTCB Android Head Units Q&A] typos1:
Whatever, the error message says there is a space where there shouldnt be, so look for one !

I thought your problem was a hissing noise, not no sound at all.
[MTCB Android Head Units Q&A] chiefwigms:
You figure out the USB disk crashing? I'm on Coudu's KLD 4.4.4 01/13/15 build. With a 256GB USB drive (FAT32), the headunit randomly boot loops
[MTCB Android Head Units Q&A] haxigi:
So where should i find a space if the name is update.img ? ;D
[MTCB Android Head Units Q&A] typos1:
I dont know, but as English isnt your first language I thought I d explain what the message was saying, its up to you to try and find it now you have the info.
[MTCB Android Head Units Q&A] ced60:
Okay, I see how to update the system. But can we go from 4.4 to 4.2 like that?
[MTCB Android Head Units Q&A] haxigi:
Yes. Also this work too for mcu update / downgrade [MENTION=6275198]ced60[/MENTION]

[MENTION=456516]typos1[/MENTION]

Thanks for the info.

Also could you tell me if codus 4.4 rom change recovery from stock to twpr?
[MTCB Android Head Units Q&A] dmrxok:
Change UI

Hello,

I would like to know how can I get rid of the deafault widget in Android 4.4.4.

Is it possible without root?

Could i install KLD launcher without rooting the device?

Thanks
[MTCB Android Head Units Q&A] agentdr8:
No, if you want TWRP you have to manually flash it from the HU using the flash_image binary.
[MTCB Android Head Units Q&A] typos1:
It is not a widget it is an integral part of the launcher so you cannot remove it unless you mod the apk, just install a another launcher of you dont like it. The KLD and JY launchers have this widget like thing built in, the KGL one does not, instead there are 4 widgets you can install if you want, or leave them not installed.
[MTCB Android Head Units Q&A] dmrxok:
How can i download KGL Launcher?
[MTCB Android Head Units Q&A] typos1:
Install the rooted KGL firmware and get the apk from that, or do a thread search and see if anyone has uploaded it already, or see if it is on the fileserver on first page.
[MTCB Android Head Units Q&A] MurphyNr.1:
Hi there,

i just found something interesting on Github regarding IBUS

github.com/TrentSeed/BMW_E46_Android_RPi_IBUS_Controller

I already ordered the USB Interface and i already have the Rasp Pi at home.So i wanted to install the BMW_RPI Ibus Controller apk but i cant find anything after i downloaded it..Just the remote for the smartwatch....Can anyone help me ?!
[MTCB Android Head Units Q&A] ced60:
I just tried to downgrade in 4.2 no results. I show you a video that it makes me:

http://youtu.be/ymCQXpTnxw0

A strange sound at startup of the application then nothing
[MTCB Android Head Units Q&A] haxigi:
Ive installed clydes rom and its great. Nice launcher and radio app. Finally rooted :)

Now i need to figure out how to start mtcradio before android boot up and how to turn screen off but let it play music in background
[MTCB Android Head Units Q&A] patoca:
Spotify and Radio

Hi Folks, when listening radio if I open Spotify both apps sound at the same time...is it possible to stop radio automatically when Spotify starts playing music and vice versa?

Thanks
[MTCB Android Head Units Q&A] Krisjan89:
Not directly no. But you could use tasker ( you can buy it on play store) and set up some profiles that kills one app, if another is started.
[MTCB Android Head Units Q&A] haxigi:
it looks more like hardware issue.

Try this: http://xdaforums.com/showpost.php?p=55267185&postcount=3258 http://xdaforums.com/showpost.php?p=55279871&postcount=3266 http://xdaforums.com/showpost.php?p=58641597&postcount=8370

Maybe also like someone before said - try differend radio chip versions in factory settings? Select another one, apply, exit, radio and if still nothing check another.
[MTCB Android Head Units Q&A] clearchris:
Looks like there is a new KLD software version out.

Is there a way to back this up clean before rooting? Everything I have found requires root first.

Thanks!
[MTCB Android Head Units Q&A] typos1:
We know about the MCU V2.40 but we cant get it until the Chinese are back from new year, not sure anyone is going to be interested in 4.2.2, even if it is apparently a new build. Are you talking about backing up the MCU ? No one knows how to do it, if youre talking about Android then AFAIK no, getting the system image will need root.
[MTCB Android Head Units Q&A] clearchris:
Well, that explains it then, thanks.

Has anyone done any work on deciphering the communication between android and the MCU?
[MTCB Android Head Units Q&A] devin2:
Hi

Itride few times to install twrp with flash_image but I have always the error -1 ???? and twrp not intalled .