yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] tmiller101:
If your question is how to remap the buttons: Then it needs to be rooted, but a custom ROM is not necessary.

However if your question is where is the mute button: As for my Joying model short press the button mute, long press shutdown. Your exact model may differ, I advise you to contact the manufacture and ask them. Most are very good at answering questions of a technical nature, more so than any other manufacture of android devices I have every seen.

Hope this helps

---------- Post added at 12:03 PM ---------- Previous post was at 11:30 AM ----------

Is it a mirror flip, where the words are backwards? Or is it a layout flip, where the left is right and the right is left? I know there is Factory setting called "Rudder" that is used to tell the HU if it is in a left hand drive car or right hand drive car.

---------- Post added at 12:11 PM ---------- Previous post was at 12:03 PM ----------

Are you just loosing your setting every time the system reboots or does this occur only when you make adjustments in Factory settings? What model and ROM?

---------- Post added at 12:41 PM ---------- Previous post was at 12:11 PM ----------

Your post is a little confusing, so I'll start with the basics. The camera should have two cables one RCA for video and one copper pair for power. Now your device may have an extra line for the plat light but that has no bearing on the camera.

The Camera functions as follows: The RCA provides video and should be connected directly to the HU. The copper pair goes to your backup light. You need a volt meter so you can figure out which is ground and which is hot. Once connected to the backup light every time the car is put in reverse the camera receives power and that triggers the HU to switch to the backup camera.

You can troubleshoot this by finding a always 12v hot line and tap into it. The video should appear and stay on. If this doesn't happen check your connections or you may have bad hardware.

Hope this helps.
[MTCB Android Head Units Q&A] djksage:
Sorry I don't use correct words is noise [emoji6]

the image is not in focus/jammed, when I connect camera direct to + accessories image is very good but camera is always on, I need turn on camera only when I put reverse [emoji6]

I read on a another forum and I thing I need put a noise filter.

Envoyé de mon OnePlus One en utilisant Tapatalk
[MTCB Android Head Units Q&A] carburngood:
Yeah it's mirror flip, all the words are backwards. A layout flip I could handle - text backwards does my head in. Also the fact that the input still seems to be normal makes it really difficult - I have to press on the opposite side of the screen to where the button actually is.
[MTCB Android Head Units Q&A] Tabs78:
Which keyboard do you use?

Inviato dal mio SM-G920F utilizzando Tapatalk
[MTCB Android Head Units Q&A] lawson7086:
I have no idea where you want me to type these commands or what app you use to write them, and ANYONE that has joined this forum as i did only a few weeks ago will also have NO clue on how your method to enable tomtom maps to be loaded onto the SD card works because there is not ONE step by step guide!

Furthermore the posts in the OP also do not help as they fragments of conversations that expect people to already know half the method, also half the methods talked about then are now not even used anymore, so please stop telling me i need to write this command or change that command when i have know idea where to put these bloody commands and what app to rite them with!, i asked you for a step by step guide and your reply was, "i am not going through it all again i have written it so many times"

Well please point me to where you have written it just once and get someone to put it in the OP, because no one should be expected to trawl through over 2000 pages to find it, ("oh and if they do happen to randomly find a post, its a case of ("we don't use that method now")
[MTCB Android Head Units Q&A] Sasha0574:
I know the answer is a bit beyond your point... just wanted to ask one thing... Is Tom Tom that good to justify all this touble? Just asking... I used a housefull of navigation apps but never used this one so just asking...
[MTCB Android Head Units Q&A] lawson7086:
"Is Tom Tom that good to justify all this trouble? " Well maybe not i do not know the answer to your question as i have only ever used Tomom, they may well be better out there, but i am a long distance truck driver that has used tomtom for well over 10 years now and i guess you tend to stick with what you know, However in my line of work i totally depend on some kind of GPS navigation system and i have managed to install one of these HU in my truck with a 12 volt feed, most euro trucks being 24 volts, the HU is working perfectly but i am having to use foldermount to mount the maps onto the SD card and have been told that its far from ideal with this unit, so i am just looking for help with this new method, for a truck driver i am very good with computers and could easily follow a step by step instruction on how to use this method, but all i can find in the OP is fragments of conversions where you are expected to already know half the method that is being used, and half these methods talked about in the OP i believe are out of date and not used anymore anyhow, which of course is very frustrating!
[MTCB Android Head Units Q&A] superbass311:
Everything I see says I can't root 4.4.4

Sent from my Ascend Mate 2
[MTCB Android Head Units Q&A] drago30:
problem radio
[MTCB Android Head Units Q&A] 2safe4you:
It looks like, it goes.

Page 26 and 28

https://developer.apple.com/hardwaredrivers/BluetoothDesignGuidelines.pdf

Other Car is Ford Kuga with a original Blaupunkt DVD Navigationsystem.

They have a Bluetooth connection to our iPhone.

If it is connected, we see the Cell quality.
[MTCB Android Head Units Q&A] antvic:
See the attached document, please.
[MTCB Android Head Units Q&A] lawson7086:
Thank You very much indeed :D
[MTCB Android Head Units Q&A] antvic:
I hope to serve you. Worked to me. You must follow the steps exactly.
[MTCB Android Head Units Q&A] pakyemme:
Can i use this guide for tomtom 1.4??? Thanks
[MTCB Android Head Units Q&A] xrapidx:
I'm waiting for my copy to finish. I've reformatted it as fat32, I'll see how it goes.

I think it has something to do with the read speed when the drive is over a certain capacity.
[MTCB Android Head Units Q&A] typos1:
ALL versions are compatible with Torque, the CAN Bus adapter is a totally separate thing.

So you WILL need an OBD2 adapter and as usual for these units (which are static, ie you wont be removing them and walking about holding them whilst using Torque) you are best getting a PROPER USB to OBD2 cable and not a bluetooth adapter (which is lower and less accurate than hard wiring and more expensive as it contains a Bluetooth transmitter which you do not need because the headunitunit is stuck in your dash and not portable).

Or maybe to do with Windows formatting - Microsoft has added a proprietary limit for FAT32 which is quite low because it wants to encourage people touse its newer EXFAT file system, but I sure you know all that now cos youve read that wiki article on SD cards ! :)

What format was it before then ?
[MTCB Android Head Units Q&A] xrapidx:
It was fat32, I'm reformatting it as fat32.

I'm not sure what wiki you're referring too, and this isn't a SD card.
[MTCB Android Head Units Q&A] typos1:
I was referring to the wikipedia page I posted yesterday, apologies, I thought it was an SD card, not a flash drive, although it still DOES contain relevant info on the FAT32 file system.

I should have put "but I m sure you know all that now because youve read threads on XDA explaining how to get Android to read FAT32 files systems over 32Gb" .
[MTCB Android Head Units Q&A] peppuzzo78:
Is possible installing the kernel of v1.77 and leaving the

rest as 1.86. I have a KGL universal.

If yes, how can i? Is there a tutorial.

Thanks in advance
[MTCB Android Head Units Q&A] agentdr8:
Yes. Please see this post here. It outlines what needs to be done.
[MTCB Android Head Units Q&A] peppuzzo78:
Thanks a lot
[MTCB Android Head Units Q&A] elcolombia17:
First, sorry my english.

Dear, keep working on it! i have been reading in other forums about IOIO hardware to do this, but im no able to program nothing.

I have a lot of info about ibus and how it send/receive messages and have some plugins from centrafuse that is able to reproduce 100% the oem obc function from bmw(maybe for somebody to know programming is easy to extract source code)

If you want i can send it to you

Enviado desde mi K1 turbo mediante Tapatalk

---------- Post added at 09:39 PM ---------- Previous post was at 09:33 PM ----------

I have a bmw e39 huifei unit with 1.77. Update to 1.86 is needed/good or no has a important improve?

Mine all works fine(mc,bluetooth,wifi, etc etc)

Enviado desde mi K1 turbo mediante Tapatalk
[MTCB Android Head Units Q&A] agentdr8:
Windows has a limitation on the fat32 filesystem size, and that is 32GB. There are other tools that can format a drive with the fat32 filesystem and utilize the entire disk: http://www.techrepublic.com/blog/windows-and-office/format-fat32-drives-beyond-32gb-limit/.

---------- Post added at 12:42 PM ---------- Previous post was at 12:41 PM ----------

As the saying goes, "If it ain't broke, don't fix it." :) So unless there's some issue you think would be resolved with 1.86, I'd just leave it.
[MTCB Android Head Units Q&A] typos1:
Yes, I am very interested in this too, someone else posted something about it as well a few months back, he had Linux (dont know what version, but wasnt Android) running on one of these units and was asking for more info about communicating with CAN Bus, I posted some links that may have helped, may help here too, I will edit this post later with the links I posted, then, one was about someone who had got an Arduino to work with the CAN Bus on his Mazda.

Edit: here is the post I was talking about, my reply with the links is below :

Also posted some links about ACN Bus in this post :
[MTCB Android Head Units Q&A] optx:
Looks like it really fixed my Wifi.

THX a lot :good:

If anybody still needs the kernel.img from the 1.77 update.img, just take the one from the attachement :p
[MTCB Android Head Units Q&A] gy_ro:
I have to check my DVB-T2 unit for that special connector. When I bought my HU, Bingo told me that that connector on the back of my universal Huifei KGL-7620 was for future use so I guess that what you want (and me too) is not possible at this moment. I hope I'm wrong though ...
[MTCB Android Head Units Q&A] idr3s:
Thanks for replying ..now I do understand why you might say having a USB ones better .. Though Im concerned if its okay to leave the obd2 plugged in at all times?? ..as with the bluetooth one id be able to remove it rather easily
[MTCB Android Head Units Q&A] typos1:
Yes, its fine, I leave mine permanently connected with no problems.

I dont really understand what youre trying to say about removal - a bluetooth one has to be plugged into the OBD port, which is likely to be behind a flap in the dash, so whether you have bluetooth or usb they have to be plugged in at the same place, so either way removal will take the same amount of time - remove flap, then unplug connector.
[MTCB Android Head Units Q&A] kwalsh24:
Anything specific need for the dimmer to work? It seems that the enable ON option keeps turning itself off?
[MTCB Android Head Units Q&A] agentdr8:
That's odd. Maybe try uninstalling/reinstalling the module. Once enabled, it should allow you to change start & end times (which can wrap around midnight) and adjust the brightness level.
[MTCB Android Head Units Q&A] Skitals:
Do you know what the battery draw is? I just got a bluetooth one with an on/off switch. But from what I'm reading, the on/off only turns off the bluetooth radio and there is still a power draw when "off" and plugged in. Perhaps the USB versions get power from the USB port instead of the OBD port and would cause less battery issues.
[MTCB Android Head Units Q&A] typos1:
Bluetooth is obviously also gonna draw more power cos of the transmitter, or if youve got an on/off switch you have to open the flap to turn it off every time you leave the car ! You really want to have to do that ? !

Thats on top of being slower than usb, the possibility of someone hacking your car via bluetooth and the fact that bluetooth is designed for device that move around and the stereo is staying put.

I never tire of wondering why people use bluetooth for this sort of thing, but so many people do - if youre running Torque on your smartphone bluetooth is the way to go, running it on an Android headunit, then usb is the way to go.

I have no problems with mine permanently connected, the only draw is from a tiny LED which must take, I dunno, all of a quarter of a watt, if that.
[MTCB Android Head Units Q&A] idr3s:
Sry I didnt really type that out the way I meant it.. for the complete removal of the usb obd2 device it would require disconnecting it from the back of the HU which isnt too accessible..unlike BT

Anyways since ill leave it connected aswell.. usb it is then!

Thanks for the info :)

PS In case your wondering.. my main reason for removing the adapter isnt because of battery draining.. I actually wanted to be able to move it around so i could use this device in any other car if i wanted to.
[MTCB Android Head Units Q&A] kwalsh24:
Will try and see. Will also clear the cache and all first then uninstall, as right now ill enable the service, go to adjust the dimming ans it greys out & switches the service off. Will give that a shot and report back
[MTCB Android Head Units Q&A] :
Shortly, yes.

Is anyone able to help my. Pumpkin E-Mail Support is so damn Stupid. I wrote them Tons of Mails. With Pictures to describe an so. For an easy to understand Problem: The buttons on radio are every time illuminated. Even the car lights are off. The ILLUM Cable is connected properly and the display reduces brightness automaticaly when i turn on the lights. Is there a way to get the keylight off, wenn car lights are off. I don´t have canbus car. Just one wire which connected properly to Iso plug (and working).

I tried already option "Keylight" in Factory Settings but this causes the display dimming to stop working.
[MTCB Android Head Units Q&A] jose makalolot:
Is there any way to restore the previous volume toast animation that runs on the lower part of the screen instead of the one in the middle?

Posted using my phone.
[MTCB Android Head Units Q&A] tmiller101:
Works on my Joying 4.4.4

Rooting and Passwords

Go to factory settings and enter:

126 = factory settings menu

adbon = developers mode

adboff - disables adb

*#hct#root# = temp superuser/root

keject - simulates the eject button for the DVD drive

kpower - simulates the power button

---------- Post added at 09:09 PM ---------- Previous post was at 08:59 PM ----------

That's strange, sounds hardware related. Check all the ribbon cables going to the screen. One maybe loose or not seated properly. Quite a few people have had ribbon cable issues. Reseating them seems to fix a good number of video problems.

That's all I got. Sorry.
[MTCB Android Head Units Q&A] pakyemme:
Dear, I tried step by step but it doesn't work!

Every time on the screen appeared: impossible to connect by tomtom...

Can you show me the complete patch in gps card: example many/external_sd/tomtom/com.tomtom.italia/....(files; .metadata; where are they replace???)

Thank a lot

---------- Post added at 09:49 PM ---------- Previous post was at 09:48 PM ----------

Dear, I tried step by step but it doesn't work!

Every time on the screen appeared: impossible to connect by tomtom...

Can you show me the complete patch in gps card: example many/external_sd/tomtom/com.tomtom.italia/....(files; .metadata; where are they replace???)

Thank a lot
[MTCB Android Head Units Q&A] :
It seems you want to install TomTom Europe or an old Version, which needs to be patched before you can use it. This behavior is normal and not related to the storage issue which should be solved already.
[MTCB Android Head Units Q&A] pakyemme:
Yes it is Europe maps 950 tom-tom 1.4,

But if I instal it into internal sd, it working very well, but I won't reduce the internal memory.

Thanks
[MTCB Android Head Units Q&A] :
Edit the .metadata.xml (hidden file inside tomtom/com.tomtom.europe) file to stop tomtom app complaining about "No network connection...", "Cannot contact TomTom server..." etc.:

<?xml version="1.0" encoding="utf-8"?>

<santorinicontent>

<contentlist>

<bundle>

<bundleid>com.tomtom.europe</bundleid>

<content_version>10</content_version>

<min_app_version>1</min_app_version>

<download>

<url location="file://mnt/external_SD/tomtom/com.tomtom.europe"/>

</download>

<size>0</size>

</bundle>

</contentlist>

</santorinicontent>

The Path in "url location" must complain to your correct path to SD Card.
[MTCB Android Head Units Q&A] mike.s:
Learn to trim the post you quote.
[MTCB Android Head Units Q&A] :
Learn to be more friendly to new guys! :)
[MTCB Android Head Units Q&A] pakyemme:
Thanks a lot, tomorrow I'll try it
[MTCB Android Head Units Q&A] drago30:
hello thanks for your post , could you tell me how to understand that canbus is mounted on the machine I have a astra je are on gm ( raise) , however, the language of the on-board computer is in Chinese, perhaps because the radio is Chinese , I would understand if it is You can change
[MTCB Android Head Units Q&A] tmiller101:
What radio and ROM do you have?

Not sure I understand your question. The CANbus is a network that your car uses to control various functions within the car. These HUs come with a CANbus decoder that allows you to have stock features in an aftermarket HU. The CANbus decoder is not needed. Its mostly used for steering wheel controls, showing of open doors, dimming lights, turning on a factory amp, and other luxury type features.
[MTCB Android Head Units Q&A] drago30:
radio s07 MTCB-KGL v.2.55 e rk3188

THE problem is that by setting the language in radio language setting in English, but if I relight the car after a day or two back in the Chinese language and remains fixed .
[MTCB Android Head Units Q&A] carburngood:
Radio Stations

By the way, anyone having problems with your head deck forgetting radio stations each time it powers off, check this video. Obvious but I ran afoul of it so check this first:

https://www.youtube.com/watch?v=bPH-3n1CUMI
[MTCB Android Head Units Q&A] Brendo:
I have been looking into It. The required Bluetooth profile is HFP (hands-free profile) for battery/signal levels

I'm not sure if it is as simple as a software mod on hu or wether the hardware module is also required to support the profile

Also, I believe the audio streaming is using ad2p which means that retrieving song metadata should also be possible

Both may need to use mtc integration though
[MTCB Android Head Units Q&A] martijnb23:
I Huifei - 2 DIN Pure RK3188 Android 4.4.4 with canbus

For my Audi A4 2002

The radio got stuck.

I have done software update.

Then I set everything on the menu code 126 recover its audi logo.

I have no sound on the back, have a subwoofer amplifier there are also boxes on the back.

Now amplifier does not turn on.

Who can help me, The radio has always done well.
[MTCB Android Head Units Q&A] Piaband:
HuiFei - 2 DIN Pure Android 4.2.2/4.4.2/4.4.4 RK3066/RK3188 CarStereo Radio H...

It resets sometimes randomly I think.. But it definitely resets each time I change the factory settings. I'm on the malaysk rom, joying 1024 x 800 unit.

---------- Post added at 03:06 AM ---------- Previous post was at 03:00 AM ----------

So you're suppose to swap the accessory wire with the power wire?
[MTCB Android Head Units Q&A] tmiller101:
Someone else was having a similar problem with their Amp not turning on. The preamp voltage was too low to turn on the amp. In factory settings they turned up the voltage and the amp came on.
[MTCB Android Head Units Q&A] ImitableBeatle:
How do I turn up the voltage?
[MTCB Android Head Units Q&A] jrgalang:
Hi guys - I'm curious to know if anyone has a contact to whom I can buy KGL parts from? After doing the USB mod and replacing my unit's touch screen capacitive panel, the SD card slot and AUX ports gave out on me and part of the board got chipped so I can't re-solder easily. I was hoping I can just purchase a replacement part from them. If someone has an e-mail address to a KGL source that offers replacement parts, please let me know. Thanks!
[MTCB Android Head Units Q&A] fredmuch:
If i ask someone for a pdf file with KGL, KDL, KYD models how looks like factory screen. Its somewhere on this page, but I can find it. Thanks
[MTCB Android Head Units Q&A] martijnb23:
Where can i put the voltage up in the factory setting?

Because the amp not turned on....
[MTCB Android Head Units Q&A] phil001:
Hi,

I have ordered this unit

http://xtrons.co.uk/td696a-6-95-inc...reen-double-din-car-dvd-player-with-obd2.html

Is this the same as the units discussed in this thread?

Or do i need to wait until it arrives to find out?

Thanks all
[MTCB Android Head Units Q&A] robertut:
Guys, on my KYD-type HU, I've got an issue since last Malaysk's mod. After boot, I have to press twice any button to start the action. But only the first time. Afterwards, it's enough to press buttons once. Any idea why that could be?

Got MTKKEYS replacing the function of one of my buttons, all the others are default.
[MTCB Android Head Units Q&A] hadjistyllis:
It seems the same although we cant say which version is until you get it.
[MTCB Android Head Units Q&A] phil001:
CANBUS steering wheelcontrols

Thanks for the reply

Alos does anyone know if an adapter is required to allow CANBUS steering wheel controls to be used?

Such as http://incartec.co.uk/Pages/Product.aspx?P=2973

I have read conflicting information on whether these units can deal with these types of controls or not

Thanks
[MTCB Android Head Units Q&A] carburngood:
That's the one - once you swap the wires round (just make sure your wires match colour) your stereo should remember radio stations.

---------- Post added at 01:52 AM ---------- Previous post was at 01:50 AM ----------

Bump on my own post here - any suggestions apart from the ribbon cable possibility from anyone? Tried a factory reset that didn't help.
[MTCB Android Head Units Q&A] pakyemme:
Dear, I'm sorry to comeback on the same problem but I followed your advice, I also modified .metadada file with url location... But doesn't work! What mistake do I make?

Every time tomtom started it creates in the internal sd an empty folder (com.tomtom.italia/files) but it doesn't see the folders in the external_sd (mnt/external_sd/tomtom/com.tomtom.italia/files + .metadata/files).

Into internal memory it work.

Thanks
[MTCB Android Head Units Q&A] :
Show us please a screenshot of terminal with "df" command as mentioned in the manual. We will see there if its linked correctly. Please made a screenshot from you android data folder too.
[MTCB Android Head Units Q&A] drago30:
hello qualcuso know if I change the ' app MTCcontrolsetting the forum with the peresente in radio what is ?, I tried but the machine settings do not change and ciso voices less you say that you can change the settings ?
[MTCB Android Head Units Q&A] undrwater:
I have a tasker profile that used to kill radio when I launched power amp, but it doesn't seem to work anymore.

Using a Malysk Rom.
[MTCB Android Head Units Q&A] halloj:
It all depends if your car has SWC can-bus control or SWC resistive control. The HU can deal with the resistive type

without any modifications. For can-bus you need an interface box.

This car below for instance has the resistive type, since they are talking about switch A, B and switch ground. Which

would be in your HU loom Key1, Key2 and SWC ground. You might have a similar connector in your car.

http://forums.nicoclub.com/how-to-add-radio-steering-wheel-control-t389024.html
[MTCB Android Head Units Q&A] phil001:
Thanks for the reply.

I think mine is can bus but how would I know?

There are 3 wires going to a separate plug the factory head unit which I assume are the SWC wires.