yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] dougie175:
Installed myself a 6.95" 4.4.4 Head Unit in my civic yesterday and updated using KLD_4.4.4_800x480_150113_rooted_light_reparted_init.d_v4.2

Just a couple of niggles I need to figure out as I cant use the stock music player, I have way too much music on my 128gb Micro SD, navigation is almost impossible so I am using another app such as Walkman or Shuttle this however leaves me with 2 slight problems

This first 1 I want to get the Walkman app to play on boot, continuing fro the last point in whatever track I was playing previously. Don't mind if it loads the app or just plays in the background, the faster it can do this the better, as currently I wait for RK3066 to load and then I have assigned the Mode button to play and click that and it starts to play, however RK3066 seems to take about 1 minute extra on top of initial load to start to work, ideally I would like the app to start to play ASAP and RK3066 can load in its own time in the background and I will get steering wheel controls a minute later once it has loaded. Is this possible and if so what app would be best to achieve this, Takser maybe?

The next thing I cant figure out is I would like a Walkman widget on my homescreen, as I don't use the native music app or give my head unit an internet connection I am left with a clock and a pointless weather app which I would ideally like to replace with a nice music player widget. Ideally my home screen would be a music player with a navigation panel along the bottom. Is this possible? Or does it require me to run a different Launcher?

Thanks very much if this has been covered previously it very difficult to find anything in a 1000 odd page thread.
[MTCB Android Head Units Q&A] dougie175:
Superb thank you, I use Sygic not tom tom, but from what I understand replacing the install-recovery.sh following the instructions should start up poweramp and make it play ASAP like I am looking for, and it wont matter that it is trying to launch other things I don't actually have installed?

That would solve that problem once I have installed poweramp, then there is ust the issue of the homescreen.

Am I right in thinking I could install a KGL launcher that would all me to put a different widget on the home screen? Without causing any issues on my KLD unit?

Thanks
[MTCB Android Head Units Q&A] typos1:
I m sure I ve read people with iphones have managed to connect them,have you done a thread search ?

---------- Post added at 11:40 PM ---------- Previous post was at 11:36 PM ----------

I ve got a 128Gb USB stick and it reads it no problem (the music cuts in and out 90% of the time, but that problem is related to the USB stick), it also reads my 320Gb hard drive with no problem either. I cant see why it would have a problem reading your 128Gb SD card, other than it may need to be re-formatted (in FAT32) first.

RK3066 is the processor - what you mean when you say "wait for RK3066 to load" ?

The KLD launcher has several homescreen - just swipe left and other homescreens will appear, or you could install the KGL launcher, it has no built in widgets, instead it has separately installable widgetsfor radio, music, ipod and BT music, which you can use if you want but dont have to.

Having 1000+ pages does not make it difficult to find things at all, it can just take a long time to find what you want. Reading the first page gives a good guide to things.
[MTCB Android Head Units Q&A] dougie175:
Sorry I didn't mean the music player has a problem reading my music, it is fine reading the music, it is just a nightmare to navigate all the artists albums, I am used to scrolling through artists, then picking which album I like then pressing play. The stock music player just seems to be a bit of a mess and a huge long list. I understand how it works but it doesn't work for me

By RK3066 I meant Headunit as I now understand it is called it just had RK3066 in he title on play store https://play.google.com/store/apps/details?id=com.petrows.mtcservice&hl=en

Yeah thinking of sticking the rooted 4.4.4 KGL on the unit as I think it will give me a better base to work with as I can customise the Home screen how I want
[MTCB Android Head Units Q&A] typos1:
Ah, yes, I know waht you mean, I dont like how it displays the music, its sort of a vaguely alphabetic mess, been meaning to have a play around and change it just to display folders normally as I ve got all my music arranged in artist/album folders like you.

The head unit is called a few things depending on manufacturer, RK3066 is the processor and its used in other devices as well as these. Petrows named his app "RK3066 headunit" to differentiate it from apps for RK3066 tablets.

Or you could swipe left and access the other homescreens on the KLD launcher (see post above, edited since you quoted me).
[MTCB Android Head Units Q&A] ramdani1978:
I suspect my WIFI board broken, after I made the unit partially burn due to wrong cabling in my amplifier.

After I repair the burnt copper line by making some wire jumper, I found out that I cannot turn on my WIFI in the setting menu.

After further investigation, I found out the USB Hub IC, near the WIFI board, is burnt also. So I suspect my WIFI board is broken too.

Replacing the WIFI board with the new one might be my next alternative, if installing the external WIFI dongle is not work.
[MTCB Android Head Units Q&A] agentdr8:
I've connected my step-daughter's iPhone 5s hotspot to her KGL and it worked fine. This was on iOS 7.x; haven't tried it lately with 8.x.
[MTCB Android Head Units Q&A] Mistwalker:
Volvo CANBUS

Hi! I recently got a JY unit. Flashed it with a KGL pre-rooted rom.

Things are working great, except that I miss that Sygic app that came with it :P

Anyway, I'm trying to connect my steering wheel buttons to the unit. I have a Volvo S80 from 1999-2007 model, but from 2004 and onwards you need a canbus converter for "original stereos" like Pioneer, Clarion etc. I've read that my car is supposed to have analog signals. But I don't have a clue on what cable goes where except for key1 and key2 that comes from the JY unit. I've been googling for hours, and can't find anyone doing anything with steering wheel buttons without CANBUS converters.

So, I called a company here that told me that the twinned green and green-white are the steering wheel controls cables. And I've been testing it like this:

Green -> Key1

Green-White -> Key2

Test first SWC in factory settings list.

Try mapping.

Doesn't work.

Switch cables.

Try again.

Doesn't work.

Change to second option in Factory Settings.

Reboot.

Try to map again with the now second option in Canbus list in Factory Settings.

So far I've tried 25 settings with reboots between each setting and I have got no results what so ever.

Am I doing things right to begin with? Does anyone have any clue on what setting might work with my Volvo S80 from 1999?

It would be nice if first post could be updated with a SWC list, stating vehicles with year that matches what setting in the SWC Factory Settings menu :)

I.E (setting parameter are just made up for the example below)

Car make + Model - Year - Factory Setting

Volvo S80 - 1999 - Setting 3 (HondaCanbus)

Audi A3 - 2002 - Setting 15 (Audi_A3)
[MTCB Android Head Units Q&A] ktibor69:
I have JY HU and Ford Mondeo 2011 with canbus. I had similar problem of the SWC.

I asked for help my seller.

The seller's solution solved the problem. Now I use SWC without canbus only with analog signal. I use now SWC key app perfectly.

"Dear

I asked my engineer today, maybe you can try to do.

First you need to find the red and white line and KEY2 line on the power line

Then please according to the picture to link, linking them together, I hope this can solve your problem!

[IMG="SWC"]http://kepfeltoltes.hu/150330/SWC_solving_www.kepfeltoltes.hu_.jpg[/IMG]

"

I made this:

[IMG="SWC"]http://kepfeltoltes.hu/150330/SWC_solving_01_www.kepfeltoltes.hu_.jpg[/IMG]

The red/white cable is linked to the mondeo SWC cable on the main connector and another end of the cable goes to the canbus box!

You have to know that what is the SWC cable of the car on the main connector!
[MTCB Android Head Units Q&A] clearchris:
If Wifi is hooked up via USB internally, that might be your issue right there.

Not that I'm the best electronics troubleshooter, but I have been served well to fix the obviously broken stuff first. Sometimes the rest sorts itself out.
[MTCB Android Head Units Q&A] Mistwalker:
So you have an external canbus box? Not using the built in functions? Or did you refer the Canbus box to "something inside" the JY unit?

And you only used the pink "Key2" cable? The "Key1" cable is not in use at all in your setup?

Trying to grasp how you connected everything :)

Mondeos SWC cable -> RED/WHITE -> JY Unit (with pink key2 soldered onto the RED/WHITE cable)

Is that correct? :)

Also, which CANBUS setting did you use in the "Factory Settings"?
[MTCB Android Head Units Q&A] jimsiv:
My radio signal as I'm listening to the radio suddenly drops and only comes again if I restart my unit. I have a kld Coudu's 4.4 with mcu 2.03. Any ideas why this happening?
[MTCB Android Head Units Q&A] typos1:
No, but try updating the MCU to the latest version.
[MTCB Android Head Units Q&A] ktibor69:
I have canbus box and I use it. But it didn't work good with SWC via Canbus (reverted the previous/next button).

I only use KEY2 wire. Yes. this is correct for Mondeo: Mondeos SWC cable -> RED/WHITE -> JY Unit (with pink key2 soldered onto the RED/WHITE cable)

Now the canbus controls only the reverse camera in-out via back gear and the power of HU.

I use Mondeo CANBUS setting in the "Factory Settings.
[MTCB Android Head Units Q&A] Mistwalker:
Ok, the problem is that there are no CANBUS boxes for my car. They came out first in 2004, and it would be an additional $100 even if there was a box for my car.

Well, guess I just have to keep on googling then. Haven't found anything anywhere. There are lots and lots of S80's rolling around here, but the ones who bought them or buy them do so because of the comfort, so no one modifies anything on them. It's pure hell just to exchange the door speakers!
[MTCB Android Head Units Q&A] jimsiv:
I had updated to the latest 2.40 but I had another problem.sometimes I was losing the steering key mapping which didn't happen again after I installed 2.03. Should I try mcu 2.30?

The version that my kld came was 2.02 but didn't find it to download
[MTCB Android Head Units Q&A] ktibor69:
You don't need canbus box, that you use SWC perfectly. I don't use canbus box to SWC.

You have to find the connection diagram (VOLVO Car Radio Stereo Audio Wiring Diagram) of your car!

See end of this link: http://www.happyshoppinglife.com/vo...tal-tv-bluetooth-touch-screen-rds-p-1946.html
[MTCB Android Head Units Q&A] exitido:
Hello, anyone can help me?

My autoradio dosnt start, yesterday works great but today i dont know why but i cant pass from the splash screen:

My car its on a parking without sun and at 20º celsius , i dont know what version i have (KGL/KLD/GS/RM/JY/MD) because android dont start.

I tried start recovery and format to the initial state but dont work.

My radio its like that but with blue leds only

Sorry a lot for my english, thanks in advance
[MTCB Android Head Units Q&A] Enc0der:
I searched and searched and couldn't find any answers - is there a comparison somewhere between the 800x480 and the 1024x600 versions, so I could see the actual difference between them?

On a different topic, are there any pros/cons to KLD/KGL/JY etc', hardware wise (because the software can be changed to any of the others) such as known MCU bugs maybe - that makes one better over the other?
[MTCB Android Head Units Q&A] c5vette211:
USB OBD

Did anyone find a fix for USB OBD ELM327? I am running i tried installing http://www.wch.cn/download/CH341SER_ANDROID_ZIP.html but still not working. I am showing the chip is CH340 and manufacturer wch only has the CH341 driver for android.
[MTCB Android Head Units Q&A] typos1:
Yeah, try 2.30 then.

You can fins out what type yours is by looking at the back, theres a link on the first page.

No, but with screens the higher the resolution the better.

I prefer KLD and JY versions, but its a matter of opinion, your ll have to read the thread and make your own decision based on what you read.

A fix ? You mean a compatible USB to OBD lead? Yes, but your ll have to do a thread search to find out as I cant remember what post it was mentioned in.
[MTCB Android Head Units Q&A] Enc0der:
I meant a comparison that shows the ACTUAL DIFFERENCE between them, to see if the change in resolution is obvious in REAL WORLD USE or not.

I read most of it and keep checking it daily, however I couldn't find any comparison that shows the actual differences between these versions.
[MTCB Android Head Units Q&A] typos1:
I edited my post after re-reading what you wrote - must have done it while you were writing your reply ! Its very hard to show the difference in a video, but its like comapring 720p with 1080p and as I said i my edit, the higher the resolution the better and for only an extra $20 its a no brainer.

There is a pdf linked to on the first page that tells you the differences and there are many posts with questions like yours. Like I say, read the thread and make your own opinion, personally I prefer KLD and JY.
[MTCB Android Head Units Q&A] clearchris:
Well, yes, but on my laptop, I have the resolution cranked all the way up, i don't mind small type. In the car, bigger might be better.

The higher resolution montiors are only available on the 7" units, right? There's no plain double-din KLD with 1024 resolution to my knowledge.
[MTCB Android Head Units Q&A] typos1:
The 1024x600 resolution still has the same font size as the 800x400 resolution AFAIK, although Malaysk's ROM allows you to adjust font size.

1024x600 available on all sizes of 7" above, its possible on 6.2" but no one actually makes a 1026x600 res 6.2" LCD apparently.

There is a 7" universal KLD:

https://www.youtube.com/watch?v=TIeQHTiuHSM
[MTCB Android Head Units Q&A] peti007:
I bought mine from Klyde. The support was very good for 1-2 months after buy. And was fantastic BEFORE buy. I had many questions and Jacky (sales11@szklyde.com) answered in 1-2 days for everything. When the head unit arrived, I noticed the canbus adapter for a later model than my car. I asked is it good or not and Jacky said this is OK. I couldn't adjust the trip computer and the time on the factory LCD screen. Before buy Jacky granted me this will work. After a month Klyde sent me an other canbus adapter what still can't adjust clock and trip computer. After this I have no answer from Klyde I sent them at least 20 emails.

I installed an Audison SRX4 external amplifier in my car as bridged to 2CHs for front speaker sets. The sound quality improved a lot. There is low tones and basses now with Poweramp. It never will be perfect, but acceptable. The volume is a bit low now, but I have to fine tune the amplifier. With internal amplifier the volume was loud at 18-19 but now I have to set the volume higher. There is no distortion under 24 volume.

Is there a rooted Android image what includes Viper4Android and install-recovery.sh? Which is the best pre-rooted 4.4.4 image? Still Coudu's v4.2? I want stock look not Malaysk modded one.
[MTCB Android Head Units Q&A] jimsiv:
I changed the mcu with 2.40 and also with 2.30 but the problem remains. Also I changed android with my stock 4.2.2 but have the same problem. Also checked the antenna cable. My next step is to install a radio amplifier(booster).
[MTCB Android Head Units Q&A] Marius B:
I dont know what to do . I like this unit because have android but i see and another unit from audiosources with wince that dont have any problem. About radio how it is with amplifier original ?

Thanks .
[MTCB Android Head Units Q&A] typos1:
Yes get a booster or get a power injector, check the base of your antenna on the car, if there is a power wire just buy a cylindrical power injector, if not buy a booster, but if you have no wire then DO NOT buy anything cylinder shaped theat says "booster" as it will be a power injector and will only inject power into the antenna line for antennas with an OEM booster.

Nothing pre rooted with Viper installed, but does it matter ? - its easy to install.

Why arent you using all 4 channels ? My Klyde sounds great with OEM amp and Viper4Android.

Found some possibly useful videos here:

https://www.youtube.com/channel/UCFrkbO6PkJJOR7c3zWiloVA/videos
[MTCB Android Head Units Q&A] exitido:
Hi, can i install this version if i have a GS model? i only want to install the android version not the MCU

Thanks
[MTCB Android Head Units Q&A] dougie175:
Thanks very much for the advice, trying to get my head around it.

I have managed to replace the KLD firmware with the KGL this evening which I much prefer as the Homescreen is customisable. I have stuck a nice big poweramp widget on the homescreen which is perfect for me.

Basically I have it working exactly how I want, but want to take advantage of your start earlier services install-recovery.sh mod.

All I am looking to achieve is start the HeadUnit service as fast as possible, but also most importantly I want powermamp to begin playing as soon as it can in the background instead of the foreground.

I don't want the poweramp to pop up on screen, just for the widget to be activated and music to start playing with poweramp in the background.

So in the ideal world I come to my car, turn on the ignition. Unit boots up and begins playing music from previous position in poweramp (still just showing the homescreen) then HeadUnit loads ASAP to give me steering wheel controls.

That would be the ideal for me, is it achievable? If so would you be willing to write the install-recovery.sh file for me to achieve the above obviously I will happily buy you a few pints via a paypal gift for your time and help. As I understand the install-recovery.sh file you have kindly uploaded should achieve this perfectly, but am I right in thinking poweramp will load in the foreground and display but I want it to disappear and just show the homepage?

Thanks very much
[MTCB Android Head Units Q&A] kjettern:
I've just updated to the latest 2.21 KGL mcu, but my wifi problem still persist. When I connect, the wifi signal drops to weak and wifi won't receive anything. When I try to reconnect it will work, but the all of a sudden drop again. Could it be software related or is it hardware like bad soldering etc? At least the 2.21 update speed up my device a lot! Only have to figure out this weird wifi problem..
[MTCB Android Head Units Q&A] dougie175:
Thanks for the reply yes I have installed pre rooted KGL, I have also installed poweramp and HeadUnit installed and working.

I don't need tomtom as I used Sygic and it works perfectly for me but I wouldn't have a clue which bit of the install-recovery.sh to actually remove to not break it.

If I follow the instructions here http://xdaforums.com/showpost.php?p=56991862&postcount=5336 but don't change the install-recovery.sh file, just do exactly as the topic says will I achieve what I set out to achieve, have poweramp start in the background and start playing music?

Thanks and sorry to keep bothering you, I am a little out of my league with most of this, but would like to achieve an ideal setup for me.
[MTCB Android Head Units Q&A] radiov:
Back to the old subject "subwoofer"... somebody have any information about?

I just replaced my stock Stereo Player of Sonata 2011 for this unit (KLD) but there are no control for subwoofer.
[MTCB Android Head Units Q&A] agentdr8:
You can install

any

of these roms on any headunit, as long as you don't flash a different MCU than the one for your mfg (only GS MCU on GS units, etc).
[MTCB Android Head Units Q&A] typos1:
Yes, info available if you use thread search - there is no control for sub, installing Viper4Android will help.
[MTCB Android Head Units Q&A] Enc0der:
You can install something like this to remotely control the subwoofer:

http://www.ebay.com/itm/281475895580
[MTCB Android Head Units Q&A] radiov:
I already read tons of posts. Unfortunately, Viper4Android is only a "simple patch", not a solution, it is a good equalizer but in Sonata (as in many other cars) the subwoofer level is controlled by CAN bus messages. In my case I feel the subwoofer level is lower than all other speakers.

The stock multimedia player running WinCE do the subw level control just sending canbus messages to AMP controller. I was thinking in any way to capture this messages from the original media player and to program it in Android (I am developer), but I don't have enough information or resources to do this. :(

I don't know how this HuiFei Android unit communicates with AMP controller, I just know it does because fader and volume controls are working fine.

Sorry about wrong English.
[MTCB Android Head Units Q&A] SuicidalSmurf:
First, thanks for this thread, it has been invaluable in my stereo installation. I have a Klyde unit in a 2015 Mazda6. I have everything working properly but the steering wheel controls. I've searched the thread and haven't come up with a good answer.. I found the SWC leads in my Mazda's stereo harness. Hooking 1 lead to positive and one to negative on a voltmeter returns different resistance values for each button press. On the Klyde stereo, however, I cannot get it to register any keypress. The leads on the stereo read "key 1 5v" "key 2 5v." Is there any way to get this resistive SWC to work with the stereo, or will I need to use an adapter to convert the signal?
[MTCB Android Head Units Q&A] agentdr8:
You can try adding resistor(s) into the loop, like how the PAC SWI-RC suggests for some vehicles.
[MTCB Android Head Units Q&A] clearchris:
One lead goes to key1 the other goes to ground on the harness.

You cant use key1 and key2 together they are for 2 seperate loops. Each requires to be pulled to ground.
[MTCB Android Head Units Q&A] SuicidalSmurf:
Dude, you are the man. That was the last thing driving me crazy and it's all working now! Thank you!
[MTCB Android Head Units Q&A] clearchris:
Lol, you got it. I have spent way too much time messing with that myself.
[MTCB Android Head Units Q&A] Navall_75:
Hi,

I have been on the old jellybean for a while with very little issues just a few issues that bug me but don't effect the operation of the stereo. On the old jellybean OS the 3G dongle used to get H+ signal strength but on the new KitKat 4.4.4 i get a low 3G signal is there anything in factory settings i can adjust to improve the signal? A lot of the time i get apps telling me there is no internet connection when i have 3G signal again is there anything in factory settings to fix this? Also i still get button illumination constant instead of off when headlights are off and on when headlights are on again can this be sorted in factory settings somehow? below is an image of the stereo. I am using MCU MTCB-KGL5-V2.22 and KitKat KGL_4.4.4_800x480_150115 everything else is working perfect all buttons work as they should, stereo boots quicker than ever before and apps load almost instantly.

Click thumb for bigger image.
[MTCB Android Head Units Q&A] mrSilkie:
Thanks for this. I've got an eonon headunit and i'm using a third party music app. i'm praying that it's possible for the tuning dial that is used to change the radio frequency can also be used as a next/previous button in my music player app.

Also, since you've probably figured out how to get the hardware buttons to do specific things would it be possible to add an option for the GPS button to open up our own GPS app instead of the stock gps app
[MTCB Android Head Units Q&A] typos1:
You d have to intercept the CAN Bus signals and interpret them, deffo possible.
[MTCB Android Head Units Q&A] clearchris:
I'm pretty sure you can set the GPS button in the settings somewhere. It's not exactly obvious the setting is something like "GPS Application" or some such. At least on my KLD firmware.