yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] zbaradlai:
Recovery mount problem

Hi,

Please somebody if could help me..

Recently updated my HU to DIY_HA_FUSE_RK3066_KK444_800x480_151010_root_mod_boo_2015-10-27_v1.0.0 firmware, and it seems that some problem with recovery starting script, it can't mount the GPS SD or USB drive, so it said "no firmware found" when I try to flash an image.

How to resolve this problem, flash a new recovery or..?

Thanks in advance,

zbaradlai
[MTCB Android Head Units Q&A] Brendo:
You can use any app. I use wifi odb. If you use Bluetooth, you need one whose bt name is odb. You get what you pay for though. Unsure of usb, but that would be handy to free up my data connection (I think might come down to drivers??)

---------- Post added at 08:38 AM ---------- Previous post was at 08:37 AM ----------

Not possible. Hopefully it will be one day

---------- Post added at 08:38 AM ---------- Previous post was at 08:38 AM ----------

Change the launcher. Plenty of posts in this thread
[MTCB Android Head Units Q&A] doctorman:
my USB OBD works well in the Joying head unit via the back USB. I am selling actually if anyone could use it let me know.

---------- Post added at 06:05 PM ---------- Previous post was at 06:03 PM ----------

I reported this issue to Malaysk in the last ROM but it was not fixed in the latest ROM still.

the Screen>Daydream settings are missing, should be an easy fix

I just deleted the MTC clock app in system/app
[MTCB Android Head Units Q&A] quikshifter:
Hi. I have this unit from Amazon: Carfond 7 inch Universal Android 4.4.4 Capacitive 1024*600 Resolution HD Touch Screen In Dash 2 Din Car GPS Navigation Stereo AM/FM Radio Support SD/USB/Bluetooth/3G/Built-in Wifi/DVR/AV-IN/1080P/Air Play

by Carfond

As I was driving - the screen went blank and no longer displays anything. The radio still played and buttons were lit up. The screen no longer turns on - just the back light. How do i fix this? It's stock untouched and I didn't see any broken clips
[MTCB Android Head Units Q&A] Piaband:
Did you try pressing the reset button?
[MTCB Android Head Units Q&A] quikshifter:
Yes. It responds to the reset button by shutting off the back lit blank screen and trying to turn it back on but nothing happens.
[MTCB Android Head Units Q&A] K.0.0.L.:
I got this unit and just wondering if the ram is up-gradable or not?

http://www.ebay.com/itm/371464684827?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT
[MTCB Android Head Units Q&A] Justsaye:
I have a similar unit from Pumpkin the KD-C0250, and if your referring to the 16 GB Nand Memory, no.

You will get 1 GB of space for application installation and rest for media and storage. If you flash it with

the Malaysk custom rom, it will give you 2 GB of application space and 14 GB of storage. You can add more storage memory by using a micro sd card or an usb drive, but they must be fat32. I am using a 128 GB usb drive with mine.
[MTCB Android Head Units Q&A] rickthecabbie:
I have just installed the same unit, and I'm wondering if mine has a glitch. If you press the volume/Power button quickly does your unit Mute, or does it simply power off?
[MTCB Android Head Units Q&A] Justsaye:
It doesn't turn off it just stops playing and turns the screen off. I think it goes to a standby mode.

I wounder if the JOYING model has the same problem as the Pumpkin the KD-C0250.

Have you had any problems the volume knob being inverted, turn left to volume up and right for volume down?

I am using the Malaysk custom rom, with the MTC Sound mod.
[MTCB Android Head Units Q&A] pk313:
Thanks a lot for reply....you are the only one!

We already read the mentioned post and this zip...

What we are looking for.. is someone that already work inside to the MCU

Darksimpson of pda created the mtcmcutool so MCU can be open and read

It's a list of binary code like this...pic from kld 2.55

So if was already modified...like sound improvement. .. I'm sure someone is able to more than us like [MENTION=996711]darkleo[/MENTION]. ..or darksimpson for sure

So the question was...please [MENTION=3590033]Malaysk[/MENTION] or [MENTION=456516]typos1[/MENTION] or [MENTION=322215]7floor[/MENTION] or others that use the Russian forum...or are able to contact that persons......please contact or ask for me and [MENTION=6916576]sabruri1[/MENTION] if we can have some info to understand binary data inside

Thanks again for your reply

Inviato dal mio SM-A500FU utilizzando Tapatalk
[MTCB Android Head Units Q&A] sabruri1:
Please guy..if anyone knows how to do it, please contact us

Inviato dal mio LG-D802 utilizzando Tapatalk
[MTCB Android Head Units Q&A] Billkaza:
Maybe try to PM these guys as here after 3-4 hours your post may disappear in 2 pages back..

Good luck with this guys i am really interested of someone fixing RDS at TDA7786..In TEF6686 with same (MCU KLD2 file) that i also have RDS works flawlessly.
[MTCB Android Head Units Q&A] pk313:
Already tried by pm to [MENTION=3590033]Malaysk[/MENTION] and some other ...but obviously. ..no reply... it will receive too lots PM and maybe don't read all

I'm afraid because is not a my problem but we try to solve a big issue for all community

So I can suppose that RDS system is ok and like as is to everybody

Inviato dal mio SM-A500FU utilizzando Tapatalk
[MTCB Android Head Units Q&A] Billkaza:
Yes i want to believe that something is wrong on how TDA7786 transmits RDS to MCU or how MCU translate tuner data.. But if translation is same for all kind of tuners and on tef 6686 works ok then problem maybe on TDA7786?
[MTCB Android Head Units Q&A] pk313:
Now after lot of work of [MENTION=6916576]sabruri1[/MENTION] we are already able to read correctly all RDS data and so we are able to build a new mtcradio....BUT one data translated by MCU is totally wrong is AF alternative frequencies MCU TRANSLATE WRONG so we have to fix this error

...indipendently from tuner model...we found exactly everytime the same bug on MCU

so I hope [MENTION=3590033]Malaysk[/MENTION] [MENTION=322215]7floor[/MENTION] and the other person's contacted will can advise for us darksimpson of pda to contact us...

I think isn't a big request and we are working for together

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[MTCB Android Head Units Q&A] 7floor:
[MENTION=6403767]pk313[/MENTION], I have contacted Dark Simpson. He is very busy at work these days, so maybe it will take time until he find some free minute.
[MTCB Android Head Units Q&A] pk313:
Thanks a lot..

Inviato dal mio SM-A500FU utilizzando Tapatalk
[MTCB Android Head Units Q&A] abdoahmed79:
It's my second mic defected after external mic modification, both mic worked only for 2 days and after that stopped any advice. using KYD unit
[MTCB Android Head Units Q&A] rickthecabbie:
Thw Joying Model I was using looks almost the same, instead of the mini USB it had another SD slot under the tiny front cover.

The volume know would Mute on short press and shut down on a long press. It looks like this Shut Down Only feature is the way the

C0250 is designed to work, I think it's a function of the MCU, mine is a KLD2 V2.77, which is fine with me. As for the volume know going all crazy, I ran into that problem a while back, and I found that if I went into Factory Settings menu and unchecked the box in front of "Wheel 3" my volume knob would function properly.

YMMV
[MTCB Android Head Units Q&A] robertut:
Please don't forget KYD version MCUs when patching!!!
[MTCB Android Head Units Q&A] doctorman:
open up the front panel make sur ethe ribbon cable is secure,

if that is not it you have to contact the seller for a new front assembly

could be screen or the screen board

---------- Post added at 12:24 PM ---------- Previous post was at 12:21 PM ----------

contact carjoying via email and give him all the detail information and ask the chinese engineers to fix the MCU, so the problem is fixed in the next updates

---------- Post added at 12:25 PM ---------- Previous post was at 12:24 PM ----------

NO
[MTCB Android Head Units Q&A] zalmon:
MCU and firmware need to update my 2 DIN
[MTCB Android Head Units Q&A] Justsaye:
Thanks your the help with the volume knob, my MCU is a KLD2 V2.77 also.
[MTCB Android Head Units Q&A] grahamwright1:
Anyone using a USB Ethernet NIC?

Even with my WiFi Access Point close to the car I still can't get large files downloaded without major problems and multiple retires. Does anyone know of an ethernet NIC that attaches through USB and is supported by the factory or Malaysk ROM's?
[MTCB Android Head Units Q&A] pk313:
I Already ask several times to Rambo before

Was so surprised. ..ask me pics and a video to confirm that frequency wasn't swap

After that promises that Chinese developers fix the bug

But after a lot of mails say me that will be improved with new tuners in the future

But that problem don't stay in the tuner...stay 50% in mtcradio apk and 50% in mcu

First if you press AF button you can see on actions from 'false' to 'true' but without any intent to make the command

Second if you read data coming from MCU. .give back wrong alternative frequencies. ..so logic calculations inside is wrong!

We can fix everything except mcu error because we don't know exactly how is the binary data language write

And...if joying fix mcu ...in any case all other mcu...will not work properly like kld that cover 80% of this HU

I already contacted klyde also... jackie and others ....but obviously do not reply.

So the only solution is to identify were stay AF RDS logic on mcu binary data

Some person had rework inside mcu...so I don't think that's impossible

Need just a little help

I hope that darksimpson contacted by [MENTION=322215]7floor[/MENTION] will take a few minute for us or [MENTION=3590033]Malaysk[/MENTION] or [MENTION=456516]typos1[/MENTION] that write on pda sometime. ...or some other ... can found someone that know more of mcu language....and we will solve ...fix and update a new mtcradio version...grafically it's already done. ..lot of improvements like mtcmusic...and more...

We await for this fix before

And I hope that the rule. ..will not just...everybody ready to ask....nobody ready to help

Inviato dal mio SM-A500FU utilizzando Tapatalk
[MTCB Android Head Units Q&A] halloj:
Gigabit USB 2.0 ethernet adapter works 100%. I've only tested the two rear USB ports.

http://plugable.com/products/usb2-e1000
[MTCB Android Head Units Q&A] grahamwright1:
Which make and model ethernet adapter did you test with?

Thanks!
[MTCB Android Head Units Q&A] halloj:
The one in the link above. No driver no nothing.
[MTCB Android Head Units Q&A] gstir8287:
KGL Frequent Crashing/RAM Issue

Hello, I have a KGL5 with an RK3088 processor. Since the first day of installation my unit will freeze up unexpectedly and restart. Sometimes it will get stuck on the boot screen and freeze up, restarting itself several times before loading android. More recently, the unit will just not start up at all and not even respond to the reset button. I noticed that when the unit is operating normally with no crashing, only 512mb of RAM is recognized by android (checked under App settings > Running). If it boots up with 1024 MB it will crash after a couple minutes of being on. I've contacted support about this and they have provided new firmware but the issue still persists. They keep insisting that it is a software issue and will not offer warranty service but to me it seems like it is hardware (bad RAM on the SoM?). If my radio app is running, the android part of the unit will become unresponsive but the radio will continue to play. I'm assuming since the radio is built into the MCU this is possible. My unit is completely unmodified and there have been no 3rd party apps installed after a firmware refresh. I saw that replacement SoMs are available, would this possibly fix the issue? Any input would be appreciated. Thanks!
[MTCB Android Head Units Q&A] ImitableBeatle:
The new HA headunit apparently didn't come with the play store installed on the stock ROM. (Dumb Chinese mistake)

I tried installing the play store but it doesn't seem to work that easily. Won't even let me sign into a Google account...

They probably messed up that last firmware they shipped them with so my best guess is to just install Malaysk's ROM and problems solved.
[MTCB Android Head Units Q&A] vdubskey:
Yup. The newest firmware for the HA units has no Google apps. I suggest loading the previous firmware. You can find links in the HotAudio specific thread. Im running the 9/9/2015 firmware I believe. Or you can download the gapps for kk zip. Extract and manually place the files and folders where they need to go but you will encounter some issues because it seems these units work better on some older versions of certain apps. I didn't see any improvements in the 9/18/2015 release so I would revert back.
[MTCB Android Head Units Q&A] biggyd:
How

How do I do this and where do I get the install from

Regards
[MTCB Android Head Units Q&A] tmiller101:
Malaysk's Roms can be found here: http://xdaforums.com/member.php?u=3590033

Make sure you make a backup of your current ROM before flashing and write down or photograph the factory settings so you always have a way back to the beginning.
[MTCB Android Head Units Q&A] hadjistyllis:
Check your soldering again as your cable may get loose.
[MTCB Android Head Units Q&A] hadjistyllis:
I manage to open my unit and take screenshot of my mic mod. (kgl4)

I cut the pin 4 and solder mic+ from the back and mic- to the front (pin5). No needed any other mod as built in mic is working ok with android.
[MTCB Android Head Units Q&A] vaonline:
Hi,

I bought a 2 DIN unit from Witson.

Unit works fine, but audio from radio was (severly) lacking high tones.

I found the document from a Russian site where this problem is mentioned, and made my own version.

My 2 DIn unit was different, but had the same problem.

I have placed the info on my unit here on my web-space:

Now we can hear the high tones again :)

home.scarlet.be/~spb27160/witson/Witson.html

MTCB-KYD-V59

Rk 3066-eng4.4.4 10062015.1051302

KYD-3000 MB
[MTCB Android Head Units Q&A] halloj:
Picture #1 clearly shows C32 as a 0 ohm resistor. While on my unit it was looking like a capacitor, still it might have been a link as

mentioned before.
[MTCB Android Head Units Q&A] mike.s:
Excellent first post. Added to the wiki.
[MTCB Android Head Units Q&A] hadjistyllis:
Great work. Although i dont now if i understand correctly.

You replace both C240 and C236 or just c240 with 1nf?
[MTCB Android Head Units Q&A] mike.s:
It's a stereo. He replaced 2.
[MTCB Android Head Units Q&A] hadjistyllis:
Ok that means is the same capacitors and replace with 1nf.

I have a kgl and the biggest problem was the radio high frequences. I have to figure out which capacitors need replacement for my radio (c212, c213 I suppose).

After some 4pda research I found that for the mod you need to change more capacitors and resistors. That means its not needed and changing only the 2 everything will be ok?
[MTCB Android Head Units Q&A] HenrikH29:
I cant quite figure out what you did.

I'm thinking og cutting pin 4 like you and solder til wires from the external mic directly to the BT Board pin 4 (MIC+) and pin 5 (SGND).

Why do you solder wire both to the front and back of the BT board ?
[MTCB Android Head Units Q&A] hadjistyllis:
I use fat cables and without removing board is difficult to solder them to the back, no space, thats the reason. If you can solder both of them to the back no problem
[MTCB Android Head Units Q&A] HenrikH29:
Thanks. So the method is the same as yours and witch side of the board it's soldered to should not matter:)

I was thinking of soldering it to the pins connecting the BT board to the mainboard. But perhaps thats not possible. Then i will solder to the other side (the soldering points).

BTW its a Joying Unit but i guess it's the same procedure that has to be carried out.
[MTCB Android Head Units Q&A] hadjistyllis:
Mic+ is impossible from the front.

Bt cards is almost the same on all units so I suppose the procedure should be the same
[MTCB Android Head Units Q&A] psycopanther:
Lost my radio after 4.4 flash. None of the mcus on the links seem to be working. I have tried all the radio ic options in settings. My original mcu was 2.22 . Does anyone have this mcu on a backup? Kld 2.22

Also, what should be the radio ic setting for southeast usa?
[MTCB Android Head Units Q&A] chipyy94:
Radio station doesnt work after start (bug)

If i turn key and if the radio was in sleep mode radio station works, but when i ignite car and for sec radio lose power and get it back, suddendly radio station doesnt work anymore. so i have to close radio app and open it again to start working. Would anybody fix that :) or report to developers ;)
[MTCB Android Head Units Q&A] chipyy94:
Which software? :) if anything works i will be glad ;)
[MTCB Android Head Units Q&A] robertut:
680uF capacitor keeps my KYD-based HU up for 3 seconds. That should be OK for engine starting in freezing weather too.
[MTCB Android Head Units Q&A] chipyy94:
i will keep in mind ;) and there is no software solution right? u check mail? :)
[MTCB Android Head Units Q&A] robertut:
Xposed things work, but still, Waze reacts problematically, although it restarts, it forgets the planned route. So adding the capacitor is the proper fix to many other issues.
[MTCB Android Head Units Q&A] chipyy94:
about that u are right and its way better. This week i should go to store and buy it :)

dsa8310 i have updated, i have other mcu ;) and i have set 2h delay, but that doesnt solve my issue. because when i ignite car it cuts of electric ... and i have unit from carjoying .
[MTCB Android Head Units Q&A] uncleg:
Firstly, after flashing mcu, You need to choose right hardware type of your radio at the first tab of the factory settings.
[MTCB Android Head Units Q&A] vaonline:
Yes, I did both caps :)

That is also an easy trick when reparing stereo equipment. You always have the other channel to compare with.

Indeed I saw it too in the original Russian pda.ru document.

My PCB is different and I could not find exactly the same components.

There is a high pass section too, formed by C239 / R246. I did not hear any problems with the low tones, So I left these

parts.

Radio sounds great now.
[MTCB Android Head Units Q&A] psycopanther:
Yes, you are correct. Although I do not know which is my correct type of radio. I have tried all of them with reboots in between to take effect. Still no working radio though
[MTCB Android Head Units Q&A] uncleg:
Try to choose the correct country frequency band also at the next one tab
[MTCB Android Head Units Q&A] psycopanther:
have also done this. The radio shows the frequencies correctly ( i chose America2), but there is no sound output. Although everything else seems to work great. The radio part was never the greatest anyways, it always had static except for real strong stations. Its one of the OCD annoyances that it does not work at all really.

I have the Eonon GA5173 as found HERE . I have no idea what the Radio IC setting should be but as I mentioned I have tried all of them to no avail. Right now I believe it is set to TDA7706 or something similar.

I read someone while searching that sometimes newer MCUs were the problem and that is why Manufacturers recommended not updating the MCUs. Problem is my backup with the KLD 2.22 is corrupt and I cannot find a file online for it.
[MTCB Android Head Units Q&A] uncleg:
Noone of my colleagues hasn't any issues with newest MCU versions, but if You wish, You can try one of this from that link

MCU marked spoiler
[MTCB Android Head Units Q&A] djksage:
Hello everybody,

I need help to connect my back camera on my radio, I see a wire with a tape "cam power" but don't work. If I connect to back light and to light plate but is on black and white ( problems of parasites)

. you have a solution to connect properly a back camera on a KGL radio ( maybe a solution to make working wire " cam power" or a another wire without parasite)?

My radio is a KGL for seat Ibiza I install last IMG and MCU for her and is connected to canbus.

Thanks for your help/information ;)

Envoyé de mon OnePlus One en utilisant Tapatalk
[MTCB Android Head Units Q&A] superbass311:
Mute Help

Hey Guys. Awesome Thread!

I just bought this head unit: http://www.ebay.com/itm/2-Din-7-Qua...910804?hash=item25b0daabd4:g:fQIAAOSw7hRWPX~5

I scanned the first threads and could not find a answer to the question I have. I have the unit with a single volume button like listed above and when I press it the unit shuts down. I was wondering if I can remap that somehow. I would really like to press to mute and long press to power off.

It sucks to have a radio without a mute button. Other then that the radio works great.
[MTCB Android Head Units Q&A] tmiller101:
Look here

post #20844
[MTCB Android Head Units Q&A] Piaband:
I notice when I reset/reboot the head unit, I lose a lot of my settings... Radio presets (even though I'm using the xposed module that should prevent this), the temperature settings, my Wi-Fi settings, and some other small things. Is there a way to get these settings to stick through a reboot?
[MTCB Android Head Units Q&A] superbass311:
So I have to flash another rom install xposed and modify that bf file just to get mute to work? Bla!

Sent from my Ascend Mate 2
[MTCB Android Head Units Q&A] carburngood:
I've tried searching this thread but couldn't find anything that related - sorry if this has already been answered. I have a Joying Dual Core with 1024*600 screen running the latest Malaysk ROM (15/10/2015 I think.) Stereo booted one day in landscape orientation flipped horizontally and I've tried some apps to flip it around but none of them seem to work. Right from the initial loading scree (before the car logo) the screen is flipped so I have a feeling it isn't a ROM issue. Oddly while the picture is flipped the touch input isn't, so I have to tap opposite to what is displayed on the screen (the screen shows right, I have to click on the left where it would be if the display was showing correctly.) I seem to remember there was something in the factory settings menu that could affect this but I'm not sure which and I don't want to mess around without knowing exactly what I'm doing in there in case I break something even more than it already is. Any thoughts at this point are hugely appreciated as you can imagine it makes the unit quite hard to use.
[MTCB Android Head Units Q&A] halloj:
You only need to connect the 12 V from your white back light. For the black and white camera is it connected to the cam input on your radio?

Is it a Pal camera or an NTSC version? What do you mean with parasite?
[MTCB Android Head Units Q&A] 2safe4you:
... and the Battery from the Cell phone...
[MTCB Android Head Units Q&A] djksage:
Hello, I tried to connect on back light but with electronic on car don't work well,

Camera is color normally but when connected on back light with parasite I see on black and white

Envoyé de mon OnePlus One en utilisant Tapatalk
[MTCB Android Head Units Q&A] halloj:
Please explain "parasites"?

What do you mean with normally?

What happens if you connect the camera to the cam input and put +12V on the orange/black reverse cable in the HU loom.
[MTCB Android Head Units Q&A] uncleg:
No possible.
[MTCB Android Head Units Q&A] drago30:
a problem for the radio

hello I wanted to ask you for help to a problem with the radio Huifei s07 rk3188 , my problem is that by setting the language in radio in Italian language of the on-board computer is set in English, but if I leave the radio off for a while the language is set to Chinese , and even if I turn on the radio remains in Chinese .

The radio is connected to the CANbus in GM ( raise) the MCU is MTCB - KGL v2.55

thank you:)