yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] clearchris:
I just bought another headunit, if you are in the US looks like eonon now has a shipping facility in NJ. It might make warranty repairs more accessible too.
[MTCB Android Head Units Q&A] Hooch0903:
Maybe I'll contact them and see if I can get hands on one. I really wanted this to be my answer, but I may have to go with a mainstream unit instead.
[MTCB Android Head Units Q&A] cilard:
where can I get download MCU 2.73 firmware stock??? I have 2 din MCTB-GS.2.73 bloked

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[MTCB Android Head Units Q&A] Malaysk:
MCU HA-BN v.2.80

in the signature
[MTCB Android Head Units Q&A] typos1:
Ah, thanks, was more interested in seeing the unit in general - having problems communicating with the Chinese, so still havent got my unit yet, have to result to watching youtube videos of it !

Klyde isnt any better or worse than the RoadMaster or HuiFei/KGL ones - no one has reported any specific problems with one make over another, at least not yet.
[MTCB Android Head Units Q&A] lamjanus:
Ok, not with the Witson company i guess. Communication with those guys is not bad at all. I only think about one thing for not ordering a klyde... No software available in this topic. Maybe order directly from HuiFei. About 80 dollars more...
[MTCB Android Head Units Q&A] xrapidx:
Yay! Took a chance on a 128Gb kinston flash drive, it works with the headunit - busy filling it up with music.

Only down side, its all my CDs from almost 10 years ago - so the music is ancient :p

I know a couple of have been mentioned, but what's the best music player for these headunits? Power<something>?
[MTCB Android Head Units Q&A] dcmouser:
sygic on the google play store incompatible?

The first page says that Sygic woks well on the HuiFei unit -- but the Google Play store won't let me install it -- says that it is incompatible.

Any ideas?
[MTCB Android Head Units Q&A] saifbarry:
A number of apps work well, however they are not officially supported by the developers on these devices. That's why you can't install them from the Play Store. You will have to side load them. There are a number of ways to do this. Google sideloading apps.
[MTCB Android Head Units Q&A] dcmouser:
Thanks saifbarry.

Ok, I can sideload it -- but does anyone know where I can download the *official* Sygic (trial) apk?

I'd like to try it before I buy it.

If that's not possible, then if I buy sygic directly from them, will they give me a direct apk download so that I can sideload it?

The only apk downloads I see are for illegal copies.. I'm looking for the official version.
[MTCB Android Head Units Q&A] typos1:
Yes it is, all 3 known manufacturers firmware is available at the beginning of this thread.

---------- Post added at 02:46 PM ---------- Previous post was at 02:43 PM ----------

Using Chrome go here : http://apps.evozi.com/apk-downloader/

Find the app you want on the Playstore then copy the url to evozi, it will generate a download link for the apk, works with any app from the playstore.
[MTCB Android Head Units Q&A] dcmouser:
Awesome!

Thank you so much.
[MTCB Android Head Units Q&A] toologic:
Please can anybody send for me wire scheme for connection HU and DVB-T(2) external receiver. As show on photo from this post http://xdaforums.com/showpost.php?p=53522089&postcount=1021

Thanks
[MTCB Android Head Units Q&A] agentdr8:
There isn't a best, but whatever works best for you. I use Poweramp, but Playerpro is nice too. Some like Google Music, others may prefer something else. For the most part, you can try before you buy with music player apps. And there's quite a few free ones on the play store that are decent too.
[MTCB Android Head Units Q&A] sickbro80:
well, I took the plunge and decided to try and add an external mic to mine. at first I was shocked at the shoddy build quality. But the more I started looking at it, it's not bad, just that I've never seen so much glue on normally removable connections in my life. Epoxy on the ribbon cables. Some rubber type glue on most of the boards. Took me a little off guard. Because of that I couldn't really remove the small board that the mic is tucked behind, so I had to go the route of guessing. Well, my first guess was wrong. I guessed that it was the red and white wire (normal right and left colors). I cut the wire at a place I knew I could patch it back up with a little solder and some heatshrink tubing. Well, the unit wouldn't boot after. So I patched it back up, and tried the black/red wire soldered directly to the board. That was it.

I chopped the end off a headphone extension to act as my new port. Ran it through the back, since it was a stereo cable and the mic was wired mono I soldered right and left together. Gave it a dab of hot glue to keep it in place. The kicker is, I thought I had a nice mic I was planning on using laying around, but I can't find it to save my life. So I ordered one off amazon. So no testing yet. I'll keep you posted once my mic shows up, or if I find mine.

rear of my hot audio unit.

Here's where things got real.
[MTCB Android Head Units Q&A] dcmouser:
Mystery connectors

So i installed my new HuiFei Android 4.2.2 head unit, and I'm very happy with it -- everything works well.

There were a few connectors on the unit that were unlabeled and I had no idea what they were for. They are obviously not that important but I was wondering if anyone had any clue about them.

Note that this is a model specific for a Suzuki Sx4, so the main power connector fits directly into my car radio connector.

The three main mystery things I'm curious about are:

1. On the main connector is a branching off weird molex-looking connector -- any idea what this is for?

2. On the main connector is a metal male RADIO ANTENNA plug, that looks nearly identical to the one from the car that I plugged into the main unit.

3. On the secondary smaller connector is a ton of unneeded rca female plugs (lots of audio outs, etc.); there are also two bare wires (red and black) for "camera". I know these aren't for my rear backup camera, because there was a different orange wire on the main connector for my tail light signal to turn on the rear camera, and a separate yellow rca input for the rear camera video.

4. There is also a single bare wire for "break" which i left unconnected.

Anyone have any insight on these mystery wires/connectors?

ps.

I can see some people in this thread are looking for info on where to buy their units; just to add another data point, i got mine on Aliexpress from GreenYi Technology co; I have only ordered this one thing from them so I only have that to go from, but the item arrived fast (about a week) and was packed well, worked perfectly, and came with everything exactly as described -- with the following exceptions:The internal microphone on my unit is of such bad quality as to be unusable; it does get sound but its mostly pure static -- however it comes with an external mic that i haven't tried yet. Also, the gps microsd slot spring stopped working, card can be removed and inserted by friction.
[MTCB Android Head Units Q&A] Skitals:
You said it was the black/white wire... You mean the black/red? That looks super easy to get to, and nice big solder pads. I might try that. I need to figure out where I can stash a mic, or if I can wire in my cars built in mic.
[MTCB Android Head Units Q&A] DWhite456:
I drive a VW. Is there a difference in what I should be looking for in the canbus? I sometimes see Dual Canbus and other times it just mentions canbus. Do I need 1 over the other?

also when ordering from Aliespress sellers what is the typical shipping time it take to get to the US? Leaving for a trip in 2 weeks. Do you think I would get it by then? what is your experience? Thanks

are there any real differences between these 2 units other than the faceplace and controls?
[MTCB Android Head Units Q&A] gy_ro:
All I did is connect as follows :

HU (RCA conn.) ----- DVB-T2 Tuner (RCA conn.)

Aux In (L) (White) ----- Audio Out (L) (White)

Aux In (R) (Red) ----- Audio Out (R) (Red)

AV-IN (Camera In) (Yellow) ----- Video OUT (Yellow)

I grabbed red and yellow power cables of the DVB-T2 tuner together and wired them both to the Acc. 12V and the black one to ground, this way your batt. cannot drain while the car is not in use.

After that you can use the AV-In app to watch DVB-T(2) television. If you wired the "brake" lead to your handbrake (to keep the car stationary), you can only watch if the brake is on (the only legal way). If you connect the "brake" lead to ground you can also watch while driving (although it is crappy view) and only in the back is allowed then!
[MTCB Android Head Units Q&A] sickbro80:
Yeah, thanks for catching that. I did mean red and black. And yeah, the solder points were super easy. On my unit its just 4 screws that pop the whole front off and everything is right there.

---------- Post added at 02:35 PM ---------- Previous post was at 02:14 PM ----------

Has anyone gotten a 64gb or larger SD card working? I tried one and it just kept trying to format the memory card.

I saw someone they got a 128gb flash drive working. I was gonna try an external hard drive, see if that works. If so maybe I'll get a big flash drive
[MTCB Android Head Units Q&A] typos1:
Linux (remember Android is a Linux derivative) can read up to 1TB hard drive or SD card (if they were available), some times there is a software defined limit, but this can be removed.

---------- Post added at 12:07 AM ---------- Previous post was at 12:03 AM ----------

Jesus, what a glue fest !!

BTW, something I forgot to mention a few pages back, whoever makes the GS units is pretty much guaranteed to be a company with a name consisting of 2 words, the first beginning with a "G", the second with an "S", or something very similar, as Kai Ge Le = KGL, RoadMaster = RM, Klyde = KLY etc. So we can be pretty certain that Hot Audio are re-sellers rather than manufacturers.
[MTCB Android Head Units Q&A] idr3s:
can someone tell me if the HuiFei units are already compatible with Torque ..as In does the canbus do the job of a obd2 or do I have to buy a seperate adapter like a 'elm327 obd2' or something
[MTCB Android Head Units Q&A] kwalsh24:
I have the unit pictured in the top, and it performs the same as the original huifei units, same firmware and everything, so I think its just a different version look with no different functions. I kinda wish I went with the second as it looks more factory, and well the buttons on mine when you press them they click loudly and feel a little cheap. Guess all user preference

As for the canbus, I think the units that come with these radios aren't 100% complete / compatible with all vw/Audi. I ended up replacing mine due to the wacky power issues that you'll see I posted about in this thread. After doing so all accessory power perform as the stock radio once did.

The stock canbus unit didn't fully do 2 way with my car, my MFD display on my dash would lock up if I selected the audio option to ne displayed. Now that option isn't there as my axxess canbus isn't 2 way. Which doesn't effect me as I never used the MFD display in my dash for that, and my car doesn't have anything fancy for hvac controls
[MTCB Android Head Units Q&A] Skitals:
Just wanted to chime in the third option is this hotaudio (GS) one: http://www.aliexpress.com/item/Pure...lo-Passat-Jetta-Tiguan-Touran/1910979419.html

I've finally gotten it setup and as I learn the quirks and workarounds I am very happy with it. I chose this one because its the closest match to stock (coming from RCD-510), with the volume knob and all. AFAIK, this is the only VW unit that has the volume knob. I haven't had any issues with canbus. Steering wheel controls, acc power, etc all just work. It's one way only, so no climatronic or MFD display. The GS/Hotaudio units are also the newest units to hit the market, and have the most recent firmware. It also has the front usb port, which was another factor to me.
[MTCB Android Head Units Q&A] lawson7086:
Can i update just the MCU file?.....I am having the same problem that i have seen others have which is all of a sudden a loss of sound control, lets say the radio is set at a certain sound level and i go to turn it down.... nothing happens, the sound level stays the same and i do not see the sound slider come on the screen, once this happens the only way i can change the sound level is to go into settings and change it there, i can also change the level using the remote control, but the turn knob does not work again until i reboot!

I have seen in the last few days 2 other people who are having the same problem, is this a common fault and is there a work around?

The only thing i can think to do is update to the latest MCU file weather that will help i do not know, my MCU is KLD so i guess i just install the latest MCU which is (KLD v.2.78 from sleep mode) i currently have V.230 installed

So i am asking number one can you update the MUC file alone?

2:- does anyone know a workaround to this sudden disappearance of the sound level control?, from the last few days comments i am clearly not the only person that is having this problem!

3:- I am also wondering if there is a 3rd party sound controler app on google play store that i could use instead of the system sound, does anyone know of such an app?

Any advice would be welcomed :)
[MTCB Android Head Units Q&A] Malaysk:
need help

Guys, need help a man who draws well in Photoshop.We need a neutral image size 800X480 in JPG - put the first boot logo in the firmware. I'm not a designer and I do bad work. Can anyone help. Examples of pictures.
[MTCB Android Head Units Q&A] jacekruf:
Hi.

Second one looking good.
[MTCB Android Head Units Q&A] lawson7086:
Need help also!

Malaysk can i update just the MCU?

Do you know of a fix for sudden loss of volume control?

Thanks for any advice
[MTCB Android Head Units Q&A] :
Just copy only MCU.img to SD Card. Then only MCU will updated.
[MTCB Android Head Units Q&A] lawson7086:
Thanks mate, i do that now, as for the sound i am guessing you don't know of a fix for the sudden loss of sound control?...in the last week 3 other people have posted the same problem!
[MTCB Android Head Units Q&A] Tabs78:
Will it be possible porting Android auto app on head units android?

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[MTCB Android Head Units Q&A] Malaysk:
I think that Chinese programmers made a mistake with the sound in the firmware. This applies to the latest factory firmware. Many complain of the sudden stop sound during music playback.
[MTCB Android Head Units Q&A] hadjistyllis:
Latest music mod

First of all thanks sabruri1 for his latest music 4.6 as he done the hard work and malaysk for his version with live wallpaper.

I join both of them in one apk with some changes (colours are now red, live wallpaper get red, folder icon change, time a little bit bigger.....)

You can see a video of my new mod

https://youtu.be/JgMiW_-bJ6w

I WILL NOT UPLOAD ANY APK EXCEPT IF sabruri1 AND malaysk LET ME DO THIS AS THE HARD WORK BELONGS TO THEM AND I DONT WONT TO SHARE OTHERS WORKS AS MINE.
[MTCB Android Head Units Q&A] Tabs78:
Which is the last version of easy connect?news to compatibility with 5.1.1 devices?

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[MTCB Android Head Units Q&A] JEMShoe:
[MENTION=322215]7floor[/MENTION] [MENTION=1707607]pauloxx[/MENTION]: With the mic mod, which has resulted in best quality: Internal mic or external mic?

What make/model mic did you use for internal mic? for external mic?

Thanks!
[MTCB Android Head Units Q&A] 2safe4you:
Hehehehe...
[MENTION=3590033]Malaysk[/MENTION]

Do you what i mean? Why not on your own Thread.

Only for your MOD, MCU and Bootloader.

All your Mods in a Version History and sorted. Direct with one klick... :)

RK3188 Quad Core with 1024x600

RK3188 Quad Core with 800x480

RK3066 Dual Core 1024x600

RK3066 Dual Core 800x480
[MTCB Android Head Units Q&A] lawson7086:
Thanks for the reply Malaysk :)
[MTCB Android Head Units Q&A] cilard:
Mctb -Gs 2.73 nothingh!

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[MTCB Android Head Units Q&A] Malaysk:
I have very little personal time. :) I did not even have time to answer everything. :) And very bad writing in English. :)
[MTCB Android Head Units Q&A] 2safe4you:
What i mean is,

your Firmware Mods, MCU and Bootloaders must be in a

"New Thread".

A special Thread, only for you and your anouncements for new Updates.

No longer search here in this MONSTER BIG THREAD !!!

:D:D:D;););)
[MTCB Android Head Units Q&A] HenrikH29:
You are doing very fine with the english language Malaysk :)
[MTCB Android Head Units Q&A] DWilks:
Lost of Complete SOUND due to low Battery Voltage!!! I was playing music when all of a sudden the volume went way down and then, within a few minutes, the sound disappeared all together! I'm testing my unit in doors with a car battery. I rebooted to no avail. I was using 'Jet Audio' apk and I tried other apks that play music and none would.

Also no sound at anytime with anything that normally produces sound.

The unit, JY 3188 1024X600 running Malaysk rom(seriously doubt that his rom caused any problem). After the reboot did not cure the problem, I checked the battery voltage and it was at-----9.75 volts----!

Connected up my charger to the battery and immediately got my sound restored!..... The unit acted normal with the low voltage but just didn't have sound......So, problem solved but apparently the TDA-7386 audio amplifier needs good voltage to produce sound......Just something to look at if your unit starts acting strange.
[MTCB Android Head Units Q&A] marcos_vega2:
help with brightness screen!!

Hi , anyone knows how to further increase the brightness of the screen more ? because even with 100% bright light and so , day vision is very poor. I tried to modify the build.prop without success. I think there must be some way to increase ....

thanks.
[MTCB Android Head Units Q&A] koimr:
That's definitely good to know (and would be nice to have in the first post)!
[MTCB Android Head Units Q&A] JEMShoe:
Yes sir. May be good ideas for others that asked about lockscreen until we get one on car HU.

I wouldn't cut the vehicle wiring, no! I have a Joying wiring harness that goes from radio to vehicle harness; I only have to cut one wire and insert switch.

The wire is easily repaired with solder and shrink tubing; or just leave switch closed indefinately. Or I can buy a new Joying harness for 15USD if I ever need to return/sell HU.

I don't have time to test these myself but I found the following:

Holo Locker

Solo Locker

Edit: None of the above worked on the JYHU.
[MTCB Android Head Units Q&A] Tryden:
Malaysk definetly deserves an own thread. Such a great work, I really appriciate the time and effort you put in your work. Keept it up!

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[MTCB Android Head Units Q&A] p_mike83:
Hello ,

Is a workaround to mix sound when using tts voices? The sound settings work well with non tts voice, but not with tts
[MTCB Android Head Units Q&A] dazza007:
[MENTION=322215]7floor[/MENTION]

I am preparing my device for installing your mod. I followed your instructions and have checked the relevant files have the correct permissions but am confused as I am getting the following error to do with soldering !

I have not soldered the unit I wanted to make the software install first.

•mcu,Error in write() 110 (no response from i2c slave)

Is this error normal before performing the modication or is something wrong?
[MTCB Android Head Units Q&A] mike.s:
Just click on the links in the .sig on every one of his posts - how hard can it be? It's also in the wiki. Why are you bothering Malaysk, he does a lot of work, and shouldn't be bothered with anything except thanks.

---------- Post added at 05:11 PM ---------- Previous post was at 05:08 PM ----------

Because you expect the unit to work correctly with 9 Volts connected to the 12 Volt wire?
[MTCB Android Head Units Q&A] Resquer:
Exactly.

This error message means you have a hardware problem. But software part is OK (drivers have been installed corectly but no response from i2c slave because no wires :))
[MTCB Android Head Units Q&A] sabruri1:
Hello! You forget to change the color of some TextView. (Position bar, duration, device...). I like red version, my friend of androidiani.com are working with me to release a complete red version of MTCMusic. I think we are ready in some days.

Anyway , I'm working to the app to solve all the annoying bugs...so I have no interest to take any credit. I like to help other people. I am grateful to you if you work to improve our apps! :)
[MTCB Android Head Units Q&A] dazza007:
Thanks [MENTION=2977520]Resquer[/MENTION] :) I think I am ready for the soldering iron now :) :) :)
[MTCB Android Head Units Q&A] koimr:
Of course not. I meant that if one experiences loss of sound then verifying that your battery is putting out the right voltage would be something to check.
[MTCB Android Head Units Q&A] sabruri1:
I think so too
[MTCB Android Head Units Q&A] doctorman:
[MENTION=434511]agentdr8[/MENTION] just a reminder, I was wondering if you think this could be added soon.

I keep touching the search button by mistake and lose all my favorite saved radio channels

Thank you again.
[MTCB Android Head Units Q&A] robertut:
+1 for this!
[MTCB Android Head Units Q&A] Shagman68:
I would like to know also what ROM will work on KD-C0224 Pumpkin Auto head unit.
[MTCB Android Head Units Q&A] pauloxx:
Hi,

I don't make MOD for MIC. I make for sound/audio processor MOD. This is something else.
[MTCB Android Head Units Q&A] Danielitoss:
I sent a message to erisintech, wait&see... What MCU do you use on your HU and how do you turn it off when you leave the car?

About the canbus decoder, I am pretty sure we can make one with an arduino+canbus shield, but I have no idea of the protocol used between the actual canbus decoder and the HU.
[MTCB Android Head Units Q&A] 7floor:
Yes, this is normal, as I already wrote in my short manual in this thread.

This error just indicates that there's no response from I2C slave (which is our Sound Processor IC).

Of course it doesn't respond, as it is not yet re-soldered for control.
[MTCB Android Head Units Q&A] lord_byte:
Problem enter in recovery after darkleo mcu and malaysk rom install

HI Malaysk

I have installed your fantastic rom + latest darkleo MCU on my rk3066 800x600 VW 8" KGL4 car android (Compliments for your work)

Rom and MCU has work fine for same time

Now i have this problem:

- After a unclean shutdown, when i start my car , car stereo remain in VolksWagen logo and android launcher never arrive

Not a big problem I have think, I want to install your latest rom and i can clean all data in recovery

Unfortunatly i cannot enter in recovery mode

I have try with this procedure that previously work with my older roms :

Press RESET+Power for 5 sec

Release RESET and continue to press power until boot screen

When boot screen release power and after same seconds system go in recovery menu.

Unfortunatly this procedure not work now ......

In your rom , or in darkleo mcu , are there other procedure (or key combination ) to enter in recovery?

Thank you for your help
[MTCB Android Head Units Q&A] agentdr8:
Probably won't have a chance to get to it in the near future; work and non-XDA life are taking up most of my free time these days. Until then, you can see if [MENTION=6916576]sabruri1[/MENTION] can edit out the Search button on the modified MTCRadio. Then there would be nothing to accidentally press :)