yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] typos1:
It looks like somehow the update has enabled 2 way CAN Bus ?

Have you tried re-programming the SWC ?
[MTCB Android Head Units Q&A] Navall2:
Looks like a more "clean" version. Many of the erased modules are redundant or unnecessary (I think!).

.............

FancyWidget (lite) is a Play app and will actually work - the integrated one didn't.

Civic xxx (Honda Civic???)

MTC xxx apk's ?? Music is crap anyway, I prefer PowerAmp, BT is in settings now, iPod ? I don't use it as we have Airplay available,

Google aps and Lib's - dont know what they are for anyway, so will require testing to see if it is a problem.

But MTCRadio missing, THAT sounds weird. Maybe it has been replaced?

.............
[MTCB Android Head Units Q&A] 1-2-Hak:
maybe the new MTCCanbus.apk

Can you confirm the radio widget is missing?
[MTCB Android Head Units Q&A] RmXsTyLe:
Hey 1-2-Hak,

yes i can confim that some widgets are missing, including the radio widget and music player widget.

[MENTION=456516]typos1[/MENTION]

with "re-programming the swc" you mean that i go in settings and then steering wheel control and then "learn" commands ?

yes but the commands wont be used
[MTCB Android Head Units Q&A] tcfuk1962:
I have the same problem, I thought is was to do with automagic starting up the front cam!!. But after a short while I am am able to click on OK and it operates as normal.
[MTCB Android Head Units Q&A] nodymoha:
I have Roadmaster: AN-13 FEX

And the MCU: MTCB-RM1-v1.77

Is it good? or there is better one?

Second Question:

My car came with 2 subwoofer. and after I replaced the head unit. stoped.

how can I make it work?
[MTCB Android Head Units Q&A] agentdr8:
Hmm, I may not have tested this scenario. Will do that and fix as needed.

Sure thing.

I thought about it being a scroll as well, with push for enter/select. Will look into it.

Thanks! Dev is sort of on hold at the moment; I replaced my vehicle and haven't had a chance to put the KGL in the new one yet.
[MTCB Android Head Units Q&A] xxcelloxx:
I have this unit witson.com/en/displayproduct.html?proID=102184405[/url] with this mcu MTCB YZ 1.90 and problems with the sound adjustment (treble and bass and memory them after restart).What can i do?
[MTCB Android Head Units Q&A] dark alex:
R us sure? I also have this from time to time. Would have been nice if you told me :)

I will try to look into this. Will be very hard as of the unresponsiveness but I'll try...

1-2-Hak if you ahve any info (logcat or something) that could help me would you send it to me please?
[MTCB Android Head Units Q&A] bhitman:
Same problem. For me, it was Torque (which was active at start)...
[MTCB Android Head Units Q&A] xrapidx:
Maybe it has something to do with apps starting at turn on
[MTCB Android Head Units Q&A] kwalsh24:
I just flashed to 1.99. Wifi dropping issue remains and now all my push buttons are messed up!

Tried flashing with

Mtcb-kgl1 & mtcb-kgl5

My volume+ is now Bluetooth,

Volume down is nothing

GPS nothing

Eject - radio

Fast forward - dvd

Rewind - nothing

Play/pause - bluetooth

I've flashed with all tne other posted kgl images and its never messed up my buttons before.

Went back to the 1.95 mcu and my buttons are working again...
[MTCB Android Head Units Q&A] Timitri:
I bought universal tv box. I have to connect signal to my huifei with rca. Where i can found connector for huifei? Maybe i also have to know right pins and solder wires?

Or how you guys are connected tv box with rca connectors only?:)
[MTCB Android Head Units Q&A] typos1:
Have you read the wiki and the beginning of the thread were it explains about all the different versions ??

You appear to have a 5th manufacturer's version, previously unknown - there are KGB, KLD, RM versions and a 4th "GS" version which a few people have, but not many details are known about. Not heard of a "YZ" version before. It has menus like a Klyde unit, but a different back panel.

On Witson's site they also have models that have the same menus as KGL/HuiFei and also some variants of the AN21-U units as well.

Can you post a picture of your "about" screen which shows the MCU type ?

---------- Post added at 08:03 PM ---------- Previous post was at 08:00 PM ----------

You mean a universal box for ANY stereo, that is connected to L/R/Video and is controlled by a remote ? (ie NOT specifically designed to work with an Android head unit ?)

If so you will have to connect it to the AV in connectors and you will not be able to control it from the head unit. You will need to use the "AVIN" app to view it.
[MTCB Android Head Units Q&A] xxcelloxx:
Thank you Typos1 for your answer,il make a photo tomorrow in the morning!
[MTCB Android Head Units Q&A] Timitri:
Thanks, i didnt reconized that there is av in connector.:eek:
[MTCB Android Head Units Q&A] 1-2-Hak:
I think the issue is autostart apps that start just as the MTCManager.apk is kicking in that call functions to that app.

So this means that sometimes its automagic, sometimes its torque (has ODB intergration) and for me it was G.A.L.A - just due to timing.

If you put in the app a 10s delay before you make any call to the MCU functions I think you will fix this issue.
[MTCB Android Head Units Q&A] drt1394:
I too am having "popping" sound issues. Has anyone else come up with a solution to this problem? Also does anyone else have this in a BMW e46? My button illumination doesn't work right through the CAN bus adaptor that came with the unit. I also have been having CAN bus issues with the vehicle since installing the unit, so I am concerned that the CAN bus adaptor I have is faulty. It does handle steering wheel control button presses successfully though.
[MTCB Android Head Units Q&A] Stank0:
I've got it in e46 M3 with Harman-Kardon. No popping sounds here and the sound is vastly superior compared to the OEM HU IMHO.

Though I must say my button illumination doesn't work either. Some here say that the wiring isn't correct but I didn't figure out how to fix it yet.

That's pretty much the only issue I've got with this unit.
[MTCB Android Head Units Q&A] Skitals:
What unit do you have, and what firmware version are you running? I'm curious if the audio issues are related to firmware.
[MTCB Android Head Units Q&A] agentdr8:
Makes sense, but I'm not sure if it's only apps/services that rely on MCU functions. At any rate, I've updated Poweramp Toast to delay the service startup by 10s, just in case. If anyone else is catching the BOOT_COMPLETED intent, you can add a simple delay like so in your broadcastReceiver onReceive:

Timer timer = new Timer();
timer.schedule(new TimerTask() { [MENTION=439709]override[/MENTION]
public void run() {
arg0.startService(intent);
}
}, 10000);
[MTCB Android Head Units Q&A] xxcelloxx:
For Typos1
[MTCB Android Head Units Q&A] ProfessorKnox:
DTV problem

Good morning community,

did anyone operate an external DTV module (e.g. DVB-T) yet?

It will be connected to the white 10-pole connector at the back of the HU.

I received my DTV module (tuner option DTV4) yesterday.

When starting the TV app the last selected channel (in my case the one from production testing [BBC]) comes up.

But when touching the screen no menu appears.

I also tried all tv module options in the Android's factory settings menu.

Can anyone help? Maybe Keylo?

Thanks a lot in advance - and wish you a nice weekend!
[MTCB Android Head Units Q&A] ProfessorKnox:
Hi,

did you have any problems with the on-screen menu? I'm just asking, because I received my DTV4 box yesterday and it comes up with the last selected channel when starting the TV app.

But when touching the touchscreen no menu appears, so no chance to change channel or start channel search.

BTW. I'm using ERISIN 9401 which is a Huawei derivate.

Thanks a lot in advance.
[MTCB Android Head Units Q&A] tcfuk1962:
So you have gone into the factory settings using the code 126 and what have you put the DVT unit on the setting? I bet you used DVT, but it should on be TV-03 for some reason then, you will get the touch screen to work :) Well that's the way it works on my unit
[MTCB Android Head Units Q&A] ProfessorKnox:
Thanks for the quick reply!

TV_03 ISDB-T(Infospace) was already initially selected. I tried also the other options. None of them successfully :(. So I set back to option 03.

Maybe I need to dismantle HU and DTV box in order to check for connector soldering problem.

Thanks again for your support and have a nice weekend!
[MTCB Android Head Units Q&A] idr3s:
Rooting!

Which one should I press.. left or right

Quick reply would be appreciated...

Thanks

Edit: nvm I went with the left ..it rebooted and worked
[MTCB Android Head Units Q&A] typos1:
Thanks, just wanted visual confirmation of this 5th "YZ" version.

(BTW, could you post a pic of your actual unit ? Looks like a front I ve not seen before, from what I can make out, thanks)
[MTCB Android Head Units Q&A] 1-2-Hak:
I have tried all the MCU from the 1.99 upgrade and non of them work with the buttons on my unit.

Mine is the Universal with removable buttons

Looks like I have to go back to 1.86 :(
[MTCB Android Head Units Q&A] Skitals:
I believe you can use the 1.86 mcu.img and 1.99 update.img.

mcu.img is the mcu firmware, while update.img is the android system image.

---------- Post added at 04:26 PM ---------- Previous post was at 04:24 PM ----------

That's the same build date as GS v1.90. I wouldn't be surprised if it's just renamed.

---------- Post added at 04:38 PM ---------- Previous post was at 04:26 PM ----------

Further proof Hot Audio = GS. Hot Audio goes by multiple names. Their website (hot-audio.com) refers to them as both "HK CIRCLE & SQUARE CO.,LTD" and "Guangzhou Huge Circle Trading CO .,LTD" in different places. Their alibaba company profile name them "Guangzhou Huge Circle Trading Co., Ltd", but they have chosen the URL http://[B]circlesquare[/B].en.alibaba.com/ for their alibaba page.

So obviously Hot Audio =

G

uangzhou Huge Circle Trading Co = HK CIRCLE &

S

QUARE CO

There is your G and your S. Guangzhou Huge Circle & Square.
[MTCB Android Head Units Q&A] typos1:
I see, that would make sense.

But I think I also thought they were just re-sellers because they also sell variants of the AN21-U and their menus/homescreens are the same as KGL/HuiFei ones.

"GHCS" would have made more sense !

Will take it youre right though, unless anything else comes to light :)

I still think the "YZ" versions are different though - why rename them ??

They also sell these which I thought was quite a good idea, great for all the people who cant get proper dual zone working ! :

http://www.aliexpress.com/store/pro...-Screen-Cortex-A9-Dual/600991_1811702632.html
[MTCB Android Head Units Q&A] Stank0:
I've got Erisin ES9764A firmware v1.86 but I didn't have any problems with v1.77. Flashed it just because I needed the BT menu.
[MTCB Android Head Units Q&A] Skitals:
I would try downgrading just the MCU to V1.77. You can mismatch the MCU and update.img (Android OS image).
[MTCB Android Head Units Q&A] mariosnic:
KGL-7650G (detachable security plate) Bricked..... HELP!!!

I received the KGL-7650G (detachable security plate) unit a couple of weeks ago.

Everything was working perfectly. When I tried installing Sygic from google play, I kept getting the message that it is not compatible with my device, so I decied to modify "build.prop".

After that the device gets stuck at the "andoid" animation at boot.... Does anyone know if I can recover from this??

The device is rooted.

Tried going into Bootloader mode and recovery mode (On the KGL-7650G - Power on (battery power) while holding power key without usb connected), but it doesnt seem to work....

Any suggestions?

Thanks for the help,

Marios
[MTCB Android Head Units Q&A] pirate008:
install official TomTom app

Hi there,

Thank you for this brilliant thread!

I was wondering if there is a way to install (buy) official TomTom app on this unit?

I have tried to install pirated copy and that works fine, but wont let me purchase live traffic or speed camera subscriptions.

PlayStore says that the TomTom app is not compatible with this device when it clearly is.

I have read bout changing settings in build.prop file, but no matter what settings I tried to change the unit was stuck in a boot loop afterwards.

Has anybody managed to bypass the playstore device compatibility verification on this unit yet?

And help would be greatly appreciated.

Kind regards,

Sandis
[MTCB Android Head Units Q&A] typos1:
Have you tried sideloading the one from the playstore, then upgrading ?

(download form here, only works on chrome : http://apps.evozi.com/apk-downloader/ )

Or have you tried Market Helper ?
[MTCB Android Head Units Q&A] xxcelloxx:
For Typos1 and other,thank you for help!! Witson W2-A7990
[MTCB Android Head Units Q&A] typos1:
Thank you for being helpful as well ! :)

I like that front.

Could you tell me, does the knob have an LED backlight like the buttons ?
[MTCB Android Head Units Q&A] xxcelloxx:
No led backlight.
[MTCB Android Head Units Q&A] ssvenn:
I have bought and installed both TomTom and Sygic through the google play store by first rooting the device, then using Market Helper to temporarily spoof my device as a samsung galaxy s3. http://xdaforums.com/showthread.php?t=2146216

They both work great once they're installed! I had never used Sygic before, it has really pretty maps but I think the UI is harder to use while driving and it keeps calculating worse routes than TomTom. It's nice to have several options at least.

Annoyingly, the Market Helper app places a button outside of the 800x480 resolution of the HuiFei so I also had to install the xposed framework and the app settings plugin to reach the "apply settings" button. You'll want to install xposed anyway to get xposedMTC :)

Once the device type is spoofed you should be able to buy TomTom and/or Sygic through a computer and have it push the install. The biggest challenge is getting TomTom to download 3.7GB of maps through WiFi, i had to switch my encryption to WEP to make it reliable enough.

I don't understand why these applications are marked as incompatible though, maybe it got flagged because it didn't work right on an earlier head unit with a similar device ID? It's a lot of hoops to jump through for something that could have just worked out of the box.
[MTCB Android Head Units Q&A] Kidmet:
Ok, got the key wires. But what wire (from the unit) needs to be grounded for the wheel control? Confused.
[MTCB Android Head Units Q&A] typos1:
:good:

---------- Post added at 09:22 PM ---------- Previous post was at 09:21 PM ----------

I think its the screen resoution.
[MTCB Android Head Units Q&A] kwalsh24:
I used ths 1.95 MCU file and my buttons now work
[MTCB Android Head Units Q&A] Gaslight0:
I'm using the 1.95 mcu with the 1.99 upgrade and everything is looking good. My buttons are good including the GPS button which did not work with 1.86
[MTCB Android Head Units Q&A] agentdr8:
I can't recall exactly, but there should be two ground wires on the headunit; one near the constant 12V and switched 12V, which goes to vehicle chassis/harness ground, and another ground that should be with key1/key2 wires. That one should be connected to the ground in the vehicle harness that has your swc wires.
[MTCB Android Head Units Q&A] kavo77:
Custom Launcher

Has anyone made a custom launcher to make it more car friendly/oem?

MP3car.com BMW Android Launcher

I'm not much for photoshop but something like this seems pretty cool
[MTCB Android Head Units Q&A] agentdr8:
[MENTION=225284]CdRsKuLL[/MENTION] from mp3car is working on something similar. I haven't tried any 3rd-party launchers on the KGL, but I can't see why it wouldn't work. The MTC widgets probably wouldn't, but all the apps should work.
[MTCB Android Head Units Q&A] 1-2-Hak:
Will give that a shot.
[MTCB Android Head Units Q&A] Skitals:
For anyone with a GS/Hotaudio unit: I can report the KGL 1.99 update.img works great. Today I flashed GS 1.85 MCU and KGL 1.99 update.img. Everything works, including 2 way canbus (VW)! I'm getting open door notifications on my headunit, and my heads up display in my dash cluster shows radio station frequency. My track forward/back buttons on the headunit also work with Poweramp without any extra software, which never worked with GS 1.90.
[MTCB Android Head Units Q&A] 1-2-Hak:
It was my mistake...doh

Was copying the mcu to the wrong card. I was reflashing the same mcu 5 times...lol

Ended up with ver 4 working on mine. :)
[MTCB Android Head Units Q&A] kwalsh24:
Hmm will try version 4. Think I did 1 & 5 then one of the BMW versions
[MTCB Android Head Units Q&A] kavo77:
KGL4 works on my KGL-7618. I check MCU1.95 and it said KGL4 and all buttons work.

So I have updated to MCU and Image 1.99 and now my wifi drops out every 30 seconds. Previous to this it was fine
[MTCB Android Head Units Q&A] kwalsh24:
Mimes neen ddoing the same since V1.86, same with 1.99. My guess is they aren't aware of it, has anyone who's been in communication with Keylo mentioned this issue?

Think its time for maybe a hybrid firmware? 1.99 with 1.77 kernel?
[MTCB Android Head Units Q&A] coppertop2000:
If anyone is able to create a 1.99 rom with 1.77 kernel, I'd be the first to thank.

I'd actually prefer some instructions on how to do it myself... Teach a man to fish and all.

From my first searches, it seems as though bootloader needs to be unlocked, and since my unit doesn't have a front USB port, this apparently complicates things further. Hopefully I'm wrong though.
[MTCB Android Head Units Q&A] optx:
What is your device, and what files did you flash (kgl4 ?) ?

I have this one : KGL-76988G/KGL-8401G, and only the GPS Button came back with 1.95. My MEN Button is still lost...

I flashed mcu kgl 1,4 and 5, but none helped ....
[MTCB Android Head Units Q&A] 1-2-Hak:
Always risky is you cant get into bootloader.

You could use rk3xxx firmware tools for Sergio Poverony to extract the the components from the update.img

You could flash TWRP from terminal - use Quickboot app to boot to recovery and then flash kernel through ADB (this one does require that front usb)

You could google ghow to build rockchip update.img and create an update.img with just the kernel that everyone could flash :)

Just depends on how you want to do it :)

But I wouldnt without being able to get into bootloader. 1 mistake and you are bricked without it.
[MTCB Android Head Units Q&A] sprfly:
With all this combining of firmware versions with different MCU versions and kernel versions, maybe we should come with some spreadsheet or database or something for the best combinations for the all the different models.
[MTCB Android Head Units Q&A] coppertop2000:
Thanks for all the info. I'm out of the country for a few more weeks, but once I get back, I'll look into it.

Hopefully, someone is able to create a pre-'modded' file that can be easily applied using the normal firmware update process before I get home... If it's even possible.
[MTCB Android Head Units Q&A] 1-2-Hak:
Its possible - just need to fish now :)
[MTCB Android Head Units Q&A] pirate008:
Wow! Thank you very much for taking your time to reply. This works like a charm.

I tried to Install Market Helper following typos1 advice, but came across the hidden button issue.

Kind regards,

Sandis
[MTCB Android Head Units Q&A] typos1:
VERY INTERESTING !

The GS units have the same homescreens/widgets etc as the HuiFei units, only the MCU version seems different, like theyre modded Huifei units.

I wonder if this means that as long as you flash the correct MCU update for your unit you can effectively flash any main update image from any manufacturer ?

In theory this should work as theyre all really just a Rockchip RK3066 tablet mounted in a double din (or single for the BMW units) case, the differences are the MCUs and all the stuff they control outside of Android.

Previously 2 people have bricked their units by installing the wrong updates, but I think that was because they used the wrong MCU update as well.

---------- Post added at 01:10 PM ---------- Previous post was at 01:08 PM ----------

I thought months and months ago someone had managed to unlock the bootloader and it was just the source code we were lacking ?
[MTCB Android Head Units Q&A] RoBe30:
Hey guys. I stuffed my Igo install trying to get tts pro to work. I have I go working again but no sound. Could someone post their sys.text and system.INI files from their Igo install. Ideally from a system with working sound.

Cheers
[MTCB Android Head Units Q&A] 1-2-Hak:
Bootloader isn't locker - never was. Just early days it wasnt understood. The Rockchip is one of the easiest chipsets to hack. It almost unbrickable when installed into media players (cause you can short out the nand chips when bricked and put it into Maskrom mod). Unfortunately you cant get to these nand chips on our unit so easily.

What I am saying is he need to be able to boot the radio into bootloader mode. Not so easy when you dont have a usb port to upload the images.

So with bootloader mode you can upload any partition you want Boot, kernel, recovery, system. Making it much safer if you want to 'play around'
[MTCB Android Head Units Q&A] typos1:
Ah, I see, thanks.
[MTCB Android Head Units Q&A] 1-2-Hak:
No worries ;)
[MTCB Android Head Units Q&A] Kidmet:
Got it. Grounded the wire on the site you sent to the hu ground. Perfect. Thanks again!
[MTCB Android Head Units Q&A] Nordlicht011:
Illumination

Moin !

Das Problem hatte ich auch gerade, und dabei habe ich festgestellt, dass PIN 14 beim 40Pin Kabel überhaupt nicht belegt ist. Es kann die Beleuchtung also gar nicht gehen. Ich habe vom Lichtschalter eine Querverbindung zum orangen Kabel am Radio gezogen, Beim Einschalten vom Standlicht ist da nun Strom drauf und die Tastenbeleuchtung funktioniert. Hat auch den Vorteil, dass man die Dimmung benutzen kann und die Beleuchtung der Radiotasten nicht ausgeht...

Viel Erfolg !!

Hello, i had the same problem at my ES9746A. Then i detected, that PIN 14, normal the Pin for the Illumination, has absolute no cable on the Car - adapter...

I have the 6m cable from the rear of the car, but the short 40Pin-cable is the same !!! Then i found at the light switch a cable with power on at parking-light. A cable from this pin to the orange cable of the radio, and all problems are away... Perhaps you have the same mistake ?? Please check on your adapter PIN 14... I think, it will be also empty !

Good Luck !
[MTCB Android Head Units Q&A] Stank0:
I'm sorry, I don't understand this " i found at the light switch a cable with power on at parking-light". Where exactly did you find it? Any pictures possible?
[MTCB Android Head Units Q&A] cryptedx:
Hey,

I updated to 1.99 and now everything is in chinese language. Can some1 guide me through the menu plz?
[MTCB Android Head Units Q&A] RmXsTyLe:
U just need to find settings button, you know how it looks. Then u just need to go for the point with an A in the settings. Touch it and in the next menu on the top u touch and chose language
[MTCB Android Head Units Q&A] elcolombia17:
Bmw e53 unit huifei.

I updated to 1.86, answer button on steering wheel began works but wifi issues

Update to 1.99, and tried 3 mcu ( 0,1 and 5) and all with always turn on light on unit :( (no tried wifi, sorry)

Then try 1.99 with 1.77 mcu and works fine but loose answer button

The perfect mcu would be 1.86 if wifi works fine, any way to make a mix?1.77 wifi and 1.86 steering wheel control?

Sorry my english
[MTCB Android Head Units Q&A] cryptedx:
Got it, thank you!
[MTCB Android Head Units Q&A] typos1:
He is German and his English isnt very good, but hes trying to tell you that there was no cable from the car to pin 14 on the stereo on his BMW but that he found an orange cable on the light switch for parking lights and connecting this to the pin 14 of the stereo sorted it out for him and may help you sort yours out.

Wasnt hard to work out really. All it took was a bit of effort and his only post on the entire site was to tell you that to help you out, he didnt have to bother, but he did, you could have spent a few more mins working out what he meant. :)