yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] Tabs78:
i solved

i downgrade my nuxus 7 to 5.0.2 and it is ok.

so the problem is the 5.0.2 above version of android

please some have the contact of app author?
[MTCB Android Head Units Q&A] SKOLSC:
So, Root explorer works fine, but the status show me a error n°11........so i imagine i must solder something?
[MTCB Android Head Units Q&A] :
You may use exposed MTC inside Xposed Framework to fix this. It now keeps the presets.

---------- Post added at 02:32 PM ---------- Previous post was at 02:29 PM ----------

Is there a USB Bluetooth Module which is able to work with the radio. I destroyed mine, while making some attaching holes to the Radio frame. Damn. I don't need phone capability, just Bluetooth for Torque and A2DP. I hate my self, because i solder first time of my life some electric thing and it worked perfect... and now:)
[MTCB Android Head Units Q&A] jperezch:
Check this:

http://xdaforums.com/showpost.php?p=63368384&postcount=20168
[MTCB Android Head Units Q&A] 7floor:
There is no status like you say. Could you write status exactly as it is displayed?

If you mean that you got the status "mcu,Error in write() 11 (no response from i2c slave)" - then yes, you have to do soldering now.
[MTCB Android Head Units Q&A] sturmth:
only touch control

Hello,

after reading of some hundreds of very interesting and helping messages in this thread still some questions are still not answered for me.

I have the Pumpkin KD-C0346 Android 4.4.4 8" 1024*600 RK3188 MTCB-KLD2-V2.77.

This device has no physical buttons or controls, everything is touch controlled. But for the volume is no control. The only way to control the volume is to scroll down, choose the speaker and then change the volume. The only way besides this is to use the remote control, but this seems to be no good alternative while driving the car. I do not have steering wheel controls.

Do You know any way to control the volume on the display?

The second issue on this is the problem to choose items in recovery, - though I did not try until now.

If it is a problem that there is no physical power button I do not know until now, because I did not try to install any other firmware.

Does anyone have knowledge about solution for this "problem"?

May I install Malaysk firmware? Would it help anyway?

Regards

Thomas
[MTCB Android Head Units Q&A] Tabs78:
answer: i have canbus, malaysk rom(but is the same with factory rom), 4.4.4 and 3188rk 1024x600.

I have 8 button on wheel but 2 of this open strange app (one appear a microfone but i cannot say nothing and the second a hd image), i haven't the remap button app in the settings, can i change the app linked to this button?
[MTCB Android Head Units Q&A] :
Just use another MCU. Try 2.72 which works fine with my kld2.

---------- Post added at 03:28 PM ---------- Previous post was at 03:26 PM ----------

Update your MCU to antoher one. I prefer 2.72 for my KLD2 which works very well.
[MTCB Android Head Units Q&A] SKOLSC:
Yes 7floor, it's exactly this status......i'm sick because i really want to test this sound improvement, the SQ is not the best point of this HU....

Is there a tuto somewhere, for helping in soldering step, or must i contatc you directly? (for the moment, i don't know how to open this HU)

I would probably solder my BT microphone in the same time......

Best regards and thank's for any help.

SKOLS
[MTCB Android Head Units Q&A] 7floor:
Just read my recent posts (there is a special forum function to do that), I've explained what needs to be done for hardware modifications.

And your statement "for the moment, i don't know how to open this HU" makes me worrying about your device :) Shouldn't you contact nearest electronic repair workshop?
[MTCB Android Head Units Q&A] sturmth:
I am shure You try to help me, but o do not understand the benefit in downgrading the mcu. I have MTCB-KLD2-V2.77. What is better on 2.72?
[MTCB Android Head Units Q&A] Tryden:
Is there a possibility to change the hardware buttons of my head unit?

I have got a return button on my Erisin but its opening the radio app? Also I would like to change some other buttons with own apps, like Spotify.

Is there a way to get this done by my own?

Unfortunately changing my wheel buttons in the settings isnt possible either, but I can deal with it.

Gesendet von iPhone mit Tapatalk
[MTCB Android Head Units Q&A] ale_bianco:
Hi, I have a problem with an android 4.4.4 rk 3066: i can't connect the device to the wifi....i can see the wifi port and insert the password but it not connect.

Can you help me?

Sorry for my english, i'm Italian!
[MTCB Android Head Units Q&A] zammy:
Hi everybody,

So i've got a little issue with my HU. Since the last time I updated the firmware (September 9, 2015 for 1024X600 RK3188), I have lost the steering wheel next and previous buttons for music players (I am using Shuffle+ and black player).

At first I thought It was coming from the update so I waited for the next one to be released, which I installed (October 18, 2015). But it did not fix the problem

Also reading the thread did not helped me find the source of the malfunction.

So far, I have tried changing the settings of the buttons in the "secret" menu (using the 126 password) and that did not fix the issue either.

What is weird is that the "OSD" shows on the screen a ">>" notification, meaning it acknowledged that i hit the button (next or previous).

And I tried a lot of players and it seems that the problem does not affect their capability of changing music when using the player of my phone over bluetooth.

So if anyone could help or point me to a direction or tests to identify the source of the malfunction I could enjoy more my device instead of becoming crazy over those two buttons :(
[MTCB Android Head Units Q&A] leo-balaskas:
Hello, i bought this one:

http://www.amazon.de/Pumpkin-Autora...UTF8&qid=1445526451&sr=8-3&keywords=e46+radio

can i go on a custom rom? how can i make a backup from the original rom - because its already 4.4.

And also everything works - but the buttonlights dont glow -> in the menu i can select which color - then they glow for 1-2 seconds but not while driving or using the radio
[MTCB Android Head Units Q&A] :
Shure i do :). MCU controls your Hardware, even your Volume knoobs (or the virtual ones you have). Normaly a newer software must be the stables but i guess thats not right with this devices. Let me explain:

History on -my- device:

2.55 KLD2 Bad Sound.

2.55 KLD2 Sound Mod Edition. Nice sound but no Radio. (Settings are correct).

2.67 KLD2 Bad Sound but Radio :).

2.71 KLD 2 Stable but sometimes loosing Volume control.

2.72 KLD2 Stable. Loosing Volume control only when Poweramp EQ is on and Tomtom want to say something.

2.77 KLD2 Causes Black Screens. Volume Knoobs off.

2.78 KLD2 Doesn´t realy exist, its 2.72
[MTCB Android Head Units Q&A] nathan951:
I disconnect the internal microphone. But the echo is still awful.
[MTCB Android Head Units Q&A] SKOLSC:
Lol, don't worry about my "statement" ..... i don't know "how to" because i don't try to or search "how to"...... i'm not a genius, but i have some ability to make the "job" correctly.....

Thank's for answers, i'll try to find your posts about this HW mod......

SKOLS
[MTCB Android Head Units Q&A] yhasan:
hi there, did you ever get help on this or figure it out yourself. I have the same issue. I wish i could move through presets instead of seeking on my bmw. the oem radio was set that way and I miss it please let me know.

thanks
[MTCB Android Head Units Q&A] p_mike83:
i have a Eonon F Series device, although i cannot test it because i havent any extra monitors. i will install a custom rom in the next days. you can root the unit also using the root code in the special settings ( *#hct#root# )

I took a quick look in the manual of the F Series , and it doesnt seem to mention the ability to output android to external monitors.
[MTCB Android Head Units Q&A] JEMShoe:
I think >> is next preset whereas > is next frequency. Map your steering wheel switch to the desired HU function (next freq or next preset).
[MTCB Android Head Units Q&A] yhasan:
Are you referring to the Steering Wheel control menu under settings? if so, whenever I hit record and press a steering control to re-map , it just responds as normal as if i never when to the settings page and instead was in radio mode and the frequence goes up.

Please give me the steps (and the app you used to remap) so i can try it out again. there was no manual with my unit, so i have no idea if I'm even doing the remap steps correctly.

thanks,
[MTCB Android Head Units Q&A] nikefreak_80:
standard musik app / PCD front

Its possible to chancge the standard musc app with another app?

If I use another app for mp3 I must first stop the radio. If I use the standard music app the radio stops automaticaly.

The front parc distanc control dont "work" is there a possibility to use also thefront pdc and not only the rear pdc?
[MTCB Android Head Units Q&A] sturmth:
Now I understand Your advice. But I do not have any volume knobs, neither physical nor virtual. Nothing! That's the problem.

... and software is absolute stable until now.

But nevertheless, thanks for Your ideas.
[MTCB Android Head Units Q&A] Hooch0903:
Ok, I've been reading through this for 3 days now. I still haven't found the answer, hoping someone can help me out.

I'd like to pick one of these head units up for my 07 Silverado. Truck has Bose system in it. If I buy the proper adapters, am I able to retain the Bose system? Just not ready to rip everything out of it right now, but I'm tired of fighting with the Garmin, and a lot of the other features would be great.

Thanks!
[MTCB Android Head Units Q&A] halloj:
It all depends on the interface between the your recent radio and the Bose system.

1. HU has low level RCA outputs for front, rear and sub.

2. Canbus interface between the HU and your recent system, ie low level to SPDIF. I've the Canbus system in two of my cars

and i don't fancy it at all. Reason being that they only use front sound from the HU.

3. I also use the speakers to SPDIF and that I like better since both front, rear and sub work. e.g. HYBL-04
[MTCB Android Head Units Q&A] gadget_boy:
How can I backup stock rom on 4.4.4 if there is no way to root it? You can only use nandroid backup if the device is rooted right? Help much appreciated.
[MTCB Android Head Units Q&A] Hooch0903:
Thanks for the response! I have to admit though, I have no clue what it means, although I gather I'm better off replacing it all.

3. So something like the AX-ADGM01 would be preferable to the GMOS-LAN-02?

Also, if I went to replace the factory door speakers front and rear and the tweeters, what is a good compromise between cost and performance?

As long as I can get Bluetooth connection to my phones, GPS, and can get my Verizon MiFi to hook up, and have at least the same sound quality I have now, I'll be happy.
[MTCB Android Head Units Q&A] comptechltd:
It may be your phone. On my pumpkin HU when I paired it with my Motorola DROID Max the echo was terrible to the point of not being able to use it. When paired with a Samsung Galaxy S5 the sound is great. Motorola does something different in its Bluetooth implementation. The only way I fixed it was to switch phones.

If you do a google search on bluetooth echo you will find it is pretty common.

Steve
[MTCB Android Head Units Q&A] Navall_75:
Latest joying firmware won't unzip it is showing as corrupt or incomplete zip file tried downloading from carjoying website and from Huifei file server, Firmware is for RK3066 Dual-Core - 800*480 resolution file is JY_rk3066_p(20151014).zip
[MTCB Android Head Units Q&A] pauloxx:
Great work 7floor. I make this MOD and sound is much better. Radio sound now is good. Can you fix mixing sound GPS v Radio bug? If Radio play and GPS working I don't have GPS sound. Other function work great. I made this MOD on RK3188 JY HU.
[MTCB Android Head Units Q&A] halloj:
It all depends if you have a digital amplifier in your car and what kind of input you need for the factory amplifier.

Well, you might have read about the BT call sound. It's not something to recommend if you can't do the modifications

yourself. I've no clue what Verizon MiFi is.

It's probably a lot cheaper for you to take a trip to Best Buy and look at the different domestic brands, like Alpine and so on.

The HU might be cheaper, but in the long run if you need quality stay away from the Chinese.

The more expensive heads like Pioneer have the same functions and the quality is totally different. Like with the BT sound and so on.

They are also Android and Apple compatible today.
[MTCB Android Head Units Q&A] Hooch0903:
I did read about the BT issue, was willing to try to fix it.

MiFi is a wireless access point. I won't buy from Best Buy but I may have to get a mainstream unit. Really wanted a wifi unit for google maps and my email. Was really hopeful this would work.
[MTCB Android Head Units Q&A] halloj:
Wifi, no way José. The normal wifi range is a few yards. You have to use a cellular-modem for your Internet connection. Which is also

another problem if you have read the thread. Some work, some don't. Best Buy was just a suggestion.
[MTCB Android Head Units Q&A] :
I used a Y cable and a known low power module. 3G is stable.
[MTCB Android Head Units Q&A] Brendo:
mtc-keys. Check wiki

---------- Post added at 07:20 AM ---------- Previous post was at 07:19 AM ----------

The best mcu is whatever works. Higher version numbers do not mean better

---------- Post added at 07:20 AM ---------- Previous post was at 07:20 AM ----------

Have you checked the function in xposedmtc or carservice?

---------- Post added at 07:20 AM ---------- Previous post was at 07:20 AM ----------

Check wiki...or just search 7floor posts

---------- Post added at 07:21 AM ---------- Previous post was at 07:20 AM ----------
[MTCB Android Head Units Q&A] dazza007:
Any help, I tried joining but my email address is not accepted and I cannot do Russian characters for the non-bot validation.

Guys really need the Higher res images to do this mod [MENTION=322215]7floor[/MENTION] on my unit. I just get the image in the attachment when downloading . I have tried all browsers. :(

http://4pda.ru/forum/index.php?showtopic=695716&st=0#entry43606953

The images of the KLD board are post number 8 Porutchik
[MTCB Android Head Units Q&A] zammy:
Yes, I did try changing those settings over and over, but unfortunately it didn't help.

I forgot to mention that changing radio station works as it should.

Tomorow when I take the car I'll try to install different mcus, may be it'll change something. Don't know what else i can try.
[MTCB Android Head Units Q&A] pauloxx:
You don't need this foto. Please find 2 microcontroller and solder cable:

1. Find the Sound Processor, it's 28-lead IC marked BD37534FV, BD3702V or like that (different units use different analogs).

2. From leads 25 and 26 of it, using a multimeter, try to trace out the resistors connected to these leads.

3. Unsolder these resistors flip them 180 degrees and solder solder wires to free ends of the resistors.

4. Find the WM8731 IC on the board, it is also a 28-lead chip.

5. From leads 23 and 24 of this IC trace the resistors.

6. Solder other ends of wires to these resistors, to their ends that are opposite to WM8731. Refer to schematic: BD37X(25)-resistor-wire-resistor-WM8731(24) and BD37X(26)-resistor-wire-resistor-WM8731(23).

in attached you can find pin-out for this controller

http://html.alldatasheet.com/html-pdf/337931/ROHM/BD37534FV/306/3/BD37534FV.html

http://html.alldatasheet.com/html-pdf/174585/WOLFSON/WM8731/891/3/WM8731.html
[MTCB Android Head Units Q&A] Danielitoss:
can bus decoder stop working

It's a bit late, but did you fix it ?

I have the same HU, same car and the same "can bus decoder kgl" who just stop working last week :(

The HU works fine if I put the +12v on acc wire. I can always put it back on my car with this acc shunt, but I'm afraid the HU will always stay on and suck all the battery... or maybe is there a way to shutdown or put the HU in a low consumption sleep mode?

If I understood, the mcu interface directly with the can decoder, which is preloaded with a program to detect can bus signal, write wires functions state( reverse, ignition...), and make HU communication, am I right? (by the way, this thing is based on STM32f103c8t6 chip). Can we rewrite the decoder program via the HU ?

Maybe a big contributor as Malaysk can enlighten me on this.
[MTCB Android Head Units Q&A] 7floor:
I really glad for you. Can you share any photos / details so that others could follow you? The more photos - the easier for others.

And as to GPS/Radio mix - I'm working on this (still researching), but it is not as simple, so it may take a while.
[MTCB Android Head Units Q&A] Myplayerxd:
will its still not working (the canbus decoder)

well right now i am using the hu without any canbus i just connect it to the acc and 12v connection and the battery stay fine but the problem is i dont have connection with the car like steering wheel control and all does stuff i once had will hope you will have anyidea how to get a new canbus decoder or maybe if there is a way to buy one from erisin thats would be extremely nice or any other company that make that canbus decoder
[MTCB Android Head Units Q&A] JEMShoe:
Best to start anew...

Settings-->Steering wheel...

1) Press Reset;

2) > is for next preset;

3) < is for previous preset;

4) Configure other buttons;

5) Press Save.

[IMG="My JYHU Steering Wheel settings"]http://i132.photobucket.com/albums/q27/JEMShoe/Screenshot_2015-10-22-18-40-28.png[/IMG]
[MTCB Android Head Units Q&A] JEMShoe:
I thought about this when I first turned on my JYHU. Here are my thoughts:

1) If I have a passenger, I would not want them to see me enter in a passcode or pattern or even voice commands. Therefore, I would not want to have to touch the screen to enable my HU.

2) The quick way is to install (and hide) a simple toggle switch that turns on/off ACC to the radio. Turn the switch off when taking it into service.

3) With a little imagination, you can install a myriad of devices that can interrupt this wire until the secret method is applied. Basically a killswitch for your radio, except you might only enable the killswitch when you are leaving the car with someone (as opposed to every ignition cycle).

4) I did try an app that locks out specific apps but I found it not very stable, and again, I don't want to have to enable an app while driving nor for others to see me enabling my HU.

For me, this is a HU replacement and not a tablet where I can shield or turn the screen away from wandering eyes.
[MTCB Android Head Units Q&A] halloj:
He is talking Wifi. For some 3G is stable for some it doesn't work at all. That's the problem with this HU.
[MTCB Android Head Units Q&A] Tabs78:
why haven't the steeering wheel configuration panel in settings?

i have 3188 kgl 1024/600 and i try stock and malaysk rom
[MTCB Android Head Units Q&A] nathan951:
It echos with my S5 and my wife's S4. These same phones connected to our other radios and have little to NO echo (a super cheap pioneer, a mid line Kenwood, and a stock ford edge)

My wife was forced to use her speaker phone because it was so bad.
[MTCB Android Head Units Q&A] cilard:
where can I get MCU 2.73 ??? I have 2 din MCTB-GS.2.73
[MTCB Android Head Units Q&A] etsmes:
Torque - bluetooth turned of

Hi Marty,

The same happened to me with Torque Lite. But installing Torque Pro solved my problem.

I hope it helps...
[MTCB Android Head Units Q&A] schildzilla:
Hello,

Can someone help me about delayed sleep?

I flashed a malaysk Rom and MCU with "standby" on my GS rk3066 head unit, everything went fine.

Now I wonder where I can find the option to do not immediately power off/standby the device if I pull out the carkey or restart the engine.

There should be a delay before the device go to sleep.

Can someone bring light to me?
[MTCB Android Head Units Q&A] gadget_boy:
Thank you, I now have root access and have been able to do a nandroid backup however these backups can only be restored using CWM or TWRP and I want to use the stock recovery which uses .img file. Is there any way I can backup to an .img file only? I really want to keep the stock ROM for warranty reasons should anything happen.
[MTCB Android Head Units Q&A] chemnitzDaniel:
Hello there,

I have bought a RK3188-device with 1024x600 Resolution and been using Malaysk-Roms since the beginning. Sooner or later, all Hardwarebuttons except Mute and On/Off suddenly dont work anymore! As soon as I update or re-install the rom, everything is fine again! What could be the problem there? Everything else works without any problems at all until that moment!

Second question: normally Android does prioritize Audio with the start of an app. So If I’m listening to Spotify and start YouTube, it stops Spotify. That works for all downloaded apps, but not for the built-in Radio/PC Radio etc. Is there any way to fix this? It’s really annoying when you listened to Radio and start Spotify and both keep playing at the same time :D Sorry if that question got answered before, I just didnt find anything nor did I know what to look for exactly :confused:

Thanks in Advance and keep the amazing work up :good:

Greetings from Germany

Daniel
[MTCB Android Head Units Q&A] etsmes:
mtc-keys.ini services

Hi,

I would like to configure mtc-keys.ini

I know I have to use CarService to get the button codes, but how can I get the service name (Pick up the phone, hang up the phone, next and previous....)?

Thanks
[MTCB Android Head Units Q&A] ktibor69:
Use the Package Name Viewer app from googleplay. This app will show you the desire service name. And you can make copy from service name.

Tapatalk-kal küldve az én GT-I9070P-el
[MTCB Android Head Units Q&A] etsmes:
Thanks Tata for your quick reply.

And what about a function, not a package? For example, pick up the phone in the bluetooth interface?

May it work with android.intent.action.ANSWER or something like that?

In other words, I would like the handsfree phone buttons on the wheel to work.

Is it possible through mtc keys? How mtc-keys.ini should look like?

Thanks a lot,
[MTCB Android Head Units Q&A] robertut:
Thank you, but in my case your thougts don't apply, because:

1) I don't want to cut any factory wire or modify any electrics of my car, sorry.

2) I always take my car to and from the service alone, without any passenger. I also never leave my car with someone else foreigner.

I only need a lockscreen / password app to use a couple of time a year, when my car goes to service. That's it. Otherwise I would not use lockscreen.
[MTCB Android Head Units Q&A] Vierka:
spotify/yanosik

Malaysk rom, PCV Startup Builder.

After last update spotify works perfect - start automatically with system and resumes from sleep without problem - tested more then 10x.

Abaut yanosik (anti radar, gps app), thank you devilsoft for adding it to PCV Startup Builder.

But it wont start with system.

When i run the command in terminal i got this:

u0_a94@rk3066:/ $ am start -n pl.neptis.yanosik.mobi.android/.ui.activities.LauncherActivity

WARNING: linker: app_process has text relocations. This is wasting memory and is a security risk. Please fix.

Starting: Intent { cmp=pl.neptis.yanosik.mobi.android/.ui.activities.LauncherActivity }

Error type 3

Error: Activity class {pl.neptis.yanosik.mobi.android/pl.neptis.yanosik.mobi.android.ui.activities.LauncherActivity} does not exist.

u0_a94@rk3066:/ $

whats wrong??

Thanks for the info
[MTCB Android Head Units Q&A] DWilks:
[MENTION=2787826]leo-balaskas[/MENTION]

And also everything works - but the buttonlights dont glow -> in the menu i can select which color - then they glow for 1-2 seconds but not while driving or using the radio[/QUOTE]

To turn on your button lights: Settings\Factory settings\ enter 126 for password

click OK and then choose the 'other' Tab at the top and then place a check mark

to the LEFT OF "key light". Then click 'Apply' and then REBOOT. The button lights

should stay on with the color that you chose under Settings\Element.