yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] typos1:
You a have a "GS" version, read the begining of the thread (specifically the blue link "how to find out which version you have" for more info.

---------- Post added at 06:56 PM ---------- Previous post was at 06:54 PM ----------

If youre talking about Aliexpress, then you only confirm that the goods are received if they are received as described and fully working, which is fine unless they go wrong after that.
[MTCB Android Head Units Q&A] jayvan:
Pretty Pleased With My Unit

Thanks. It couldn't have been any more obvious, eh? ;)

I bought the HU and then discovered this thread and have read through the entire thing, but it's a bit of a blur right now. I'm quite happy with the unit and firmware so far. Just a few little tweaks I'd like to make but no real complaints unique to me or my experience.
[MTCB Android Head Units Q&A] agentdr8:
Xposed App Settings should work just fine.

Yep, that's right. Although I don't know if it's been updated to work with Google Music. I know it works just fine with Poweramp.
[MTCB Android Head Units Q&A] jayvan:
Thanks, I figured that was the module I was looking for.

For some reason I can't get carservice to work with Poweramp either. And it took several tries to even get it to produce the codes for me (although the toast next and previous always appeared). I may uninstall it and retry again later.
[MTCB Android Head Units Q&A] typos1:
Yes, I know how you feel, its a long thread with lots of info :eek:
[MTCB Android Head Units Q&A] corradog60:
ecu connection via bluetooth

Hello forum

I have been reading this tread for a time now and have a question.

I have installed a ecu (engine computer) in my car and the manufacture have made a android user interface so I have access to all engine data.

Can I install the “vems display app” and make connection to my ecu via bluetooth.

you tube

876TCZBUeI8

r_mmOD0d70A

Thanks for the help
[MTCB Android Head Units Q&A] rpcunha:
Can't say I understood that. Looks too complicated to me.

I have NRG player installed.

What shall I do with Car Service App in order to set steering wheel to control it (track FFD and RWD) ?

Those keycodes....how do they work ? Thanks.....
[MTCB Android Head Units Q&A] agentdr8:
When you launch Car Service, the main area on the left is where the keycodes are displayed for your current steering wheel control assignments (you've assigned them using the app in Settings right?). If you press forward or back on your swc, it should display keycodes in that main window. You take the numeric values it displays and enter them on the Parameters screen. Most likely, they are the same as the physical next/prev buttons on the headunit itself.
[MTCB Android Head Units Q&A] sir sniffalot:
jayvan,

looks like you have the same unit as me, I also bought it from pumpkin_cool but my MCU version is V1.85. (bought my unit in July). I was very impressed with delivery time from HK to Europe (3 days).

I'm using XposedMTC and all works well. I'm also using another Xposed module "appsettings" for changing dpi settings and that works well too.

I haven't got round to setting up SWC yet.

I installed TomTom navigation system because I didn't like IGO. I've also hooked up reverse camera and connected my front facing camera to the AV in connector. All works very nicely. Only thing I'm not too happy with is the sound quality, I thought the default app was rubbish and I can't really get poweramp or Viper4android set up well enough.

To anyone else who's reading there are a couple of things I'm having issues with:

I'm trying to find a decent speed dependent volume control app, GALA/SDVC works pretty well but starts working too early (50 km/h), When I'm driving around town volume keeps going up and down all the time (50 km/h is the limit in town). Would be perfect if start speed could be increased to say 80 km/h. Did find another app (speed volume) which did allow you to specify start speed but you need to set the speed and press start everytime you start up the unit.

I've tried getting into recovery or boot loader but I just get a black screen. Is this normal? I haven't entered using reset/power buttons but I have achieved it by using an app called arctools which was developed for rockchip based devices.(maybe arctools doesn't work well with our device - I don't know).
[MTCB Android Head Units Q&A] agentdr8:
I think if you get to bootloader the screen stays black. Stock recovery should show a 3e-type recovery screen.
[MTCB Android Head Units Q&A] typos1:
Hmm, interesting, I ve made the point several times that all these units are equal who-ever makes them, to people who seem to think that only HuiFei units are "genuine" but several people have had the speaker burn out problem and a few other problems and it seems these problems relate to HuiFei versions mostly as far as I can remember. :-/

Think it might be a good idea if people posted the problems theyve had and the type of unit they have so we can get some sort of idea which ones give problems and what the problems are.
[MTCB Android Head Units Q&A] dark alex:
Just a question to the speaker-burners:

did you check your speaker impedance? Probably you have 4 instead of 8 Ohms or something special others don't have...
[MTCB Android Head Units Q&A] sprfly:
Are you able to change the backlight color on yours?
[MTCB Android Head Units Q&A] typos1:
Good point, I think 1 person at least had an Audi with factory Bose which is usually 2 ohm set up, where as most normal set ups are 4ohm (soz to contradict you Alex :)). But I think some people also didnt have a factory external amp. And I think some Audis also have amplified rear speakers but not fronts.
[MTCB Android Head Units Q&A] jayvan:
Good to know that xposed works well with our units. I'm using Poweramp and have been meaning to get Viper4android installed. I'll let you know if I have any better luck. Have you installed carservice and gotten it to work? I can generate and enter the swc codes but it doesn't work at all for me with Poweramp. If it works for you then I can at least rule out our HU's being incompatible with the app.

I haven't tried to enter recovery or bootloader yet. Thought about trying to change the recovery to TWRP but have no pressing need and have a lot on my plate right now...
[MTCB Android Head Units Q&A] kwalsh24:
Update since flashing to 1.95 mcu.

Radio seems to have lost RDS, it was turned off in factory settings, turned it on but doesn't seem to change anything.

I think the GPS mixing with the radio app is fixed, mixing now dims the radio volume and raises the GPS volume, so that's an improvement.

Haven't used the radio overly much, that's all I see that's been changed.
[MTCB Android Head Units Q&A] Wranglerz:
Thanks, going to try in 2 weeks. I'm deiving a company car for two weeks. Let you know if it works for me too.
[MTCB Android Head Units Q&A] Blaze Falconburger:
A sticker on my unit claims speaker impedance of 4-8 ohms
[MTCB Android Head Units Q&A] lamjanus:
I have got a MCU screenshot from the Erisin Unit. It says MTCB-KGL4 V1.93 What is the "4" about?? Never seen that...
[MTCB Android Head Units Q&A] typos1:
Your speakers burned out ?

I spose it could be trying to deliver them more power than they can handle if theyre 2 ohm speakers and I think some people havent realised they have a factory amp set up (going from memory, I havent searched the thread, so not 100% certain). So if they dont realise theyve got an amp and dont use the line outs that may be an answer. That would mean the unit is not at fault.

---------- Post added at 12:53 PM ---------- Previous post was at 12:52 PM ----------

Cant say I ve noticed a number after the company initials before either.

Are you certain you have not got a factory amp set up ?
[MTCB Android Head Units Q&A] tcfuk1962:
You can always use this DAB Unit, which will show on the screen:-

http://www.caraudiodirect.co.uk/con...sal-dab-digital-radio-tuner-for-av-head-units
[MTCB Android Head Units Q&A] jayvan:
To be honest, I haven't tried. I've got a lot on my plate right now, but I'll see if I can at least tinker with it a bit and let you know if it works for me.
[MTCB Android Head Units Q&A] RoLoYYZ:
I can confirm, there's no factory amp in my setup. My MKV Rabbit (Golf) came with the basic stereo when I found her, the speakers are connected directly to the stereo. They are 4 ohm impedance. Didn't ever have a problem with the stock stereo, or the WinCE stereo I installed shortly after buying the car. Fast forward 3 years, I install a HuiFei unit purchased from Keylo and within a week, the unit dies and takes out two speakers in a squaking blaze of glory. Coincidence? Don't think so.

Highly suggest everyone steer clear of these units. I've gotten a new motherboard from them and I refuse to put the unit back into my vehicle because I'm concerned it'll blow out my new speakers. I could install an amp and run from the unit's line out, but that's an additional cost and pain for a unit that should have just delivered what it said it would. I also have no faith that the unit won't burn out again.
[MTCB Android Head Units Q&A] typos1:
Ok, ok, I understand your frustration and I was just trying to get to the bottom of the cause.

A few people have had bad experiences like you, but you are in the minority - most people have not had this problem.
[MTCB Android Head Units Q&A] optx:
What camera do you use for the front ? I tested several usb cams, and all of them did not work...
[MTCB Android Head Units Q&A] MuttzNuttz:
I got mine from Ebay for an E46 BMW, I also after the event got the DVB-T TV Tuner and USB front Camera from the same supplier for £47.00 delivered

Ebay user easyrising88 (Cant post links yet so search for that users store) search for ES9746EN 7" Android 4.2.2 Car DVD Player GPS OBD BMW 3er E46 M3 Rover 75 MG ZT

My touchscreen was not working but they sent replacement out which I fitted no problem at all now with any of the setup

My unit MTCB-KGL1-V1.77 now updated to the 1.86 firmware.

Hope that helps.
[MTCB Android Head Units Q&A] thnilsen:
Only drawback of using this DAB unit is that you won't be able to use the headunit to control the DAB radio..
[MTCB Android Head Units Q&A] Stank0:
I went through about 80 pages of this thread and I did the search but I still cannot find an answer. (I don't have the time for the rest)

I've got Erisin ES9746A in my BMW M3 e46 with following problems:

1, Hardware Buttons back-light illumination works only for 2-3 seconds when I turn on the unit or when I change the back-light color and then they turn off never to appear again.

2, I cannot find "Bluetooth" menu in settings. I was able to pair my phone with it with the Bluetooth app but nothing else. I want to use Torque and I have BT OBD II dongle but no way to pair it with the device.

3, Is there any way to make the steering wheel controls work with any other app than the built in? Is there any way to make the "Initiate call/hang up button work?

Anyone has an answer to ANY of this problems?

Btw, I saw some questions about the combination of this device and Harman Kardon option. No problems at all. Everything works PNP. One long cable you need to run from your trunk to the unit. You can sell everything you find previously connected in your trunk. The FAKRA extension cable plugs into the connector you pull out your OEM amp (or whatever it is).

The sound coming out of the unit is so much better than my OEM H/K, it's almost no comparison.

I'm happy with my new unit but I could be happier if I could solve these issues listed above.

Please?
[MTCB Android Head Units Q&A] agentdr8:
I think the illumination input wire isn't connected to the right one on your car.

This was fixed in v1.86 if you've got a KGL.

After assigning SWC using the app in Settings, you can use Car Audio Service to utilize your next/prev buttons in apps other than the stock Music app. Call handling buttons should work if you've assigned them in the Settings app.
[MTCB Android Head Units Q&A] Stank0:
OK, the v 1.86 fixed one of my problems.

Which wire should I connect the illumination?

I don't know what's SWC.
[MTCB Android Head Units Q&A] elcolombia17:
You update to 1.86, with kgl1 rom? Any improve? Bluetooth and wifi works fine?

Can i be upgrade to 1.73 if something wrong?

Enviado desde mi K1 turbo mediante Tapatalk
[MTCB Android Head Units Q&A] Stank0:
I never had any problems with Wi-Fi except for poor reception. BT now works fine since tere IS BT menu in settings now.

---------- Post added at 04:55 PM ---------- Previous post was at 04:53 PM ----------

I don't know about upgrading from 1.73. I've upgreded from 1.77 AFAIK.
[MTCB Android Head Units Q&A] elcolombia17:
Sorry my mistake, i mean 1.77, so no problem with bmw unit, you use file from first page? Kgl1? Right?mcu? Sorry many question

Enviado desde mi K1 turbo mediante Tapatalk

---------- Post added at 11:27 PM ---------- Previous post was at 11:19 PM ----------

Stank0, about light, check orange wire, i think your problem is because youre using 40 pin adaptor, take a look a 17 pin adaptor and look orange wire and compare wires
[MTCB Android Head Units Q&A] Stank0:
No problems except for those I've listed.
[MTCB Android Head Units Q&A] agentdr8:
SWC = steering wheel controls
[MTCB Android Head Units Q&A] Matti.x:
How to make MCU backup?

I searched the thread a few times and couldn't find the answer.

Although the question appeared in a few posts already.

Also: is there a way to flash mcu.img other than using stock recovery and the standard factory update procedure?

The first page of the thread says: "make a backup of your MCU and firmware before updating".

I'd love to know how:confused:
[MTCB Android Head Units Q&A] KeiserSozeyFr:
I would like to use Link2SD on my head unit. Is it easy to install ? is it risky ?

I don't have front usb on my device, so no custom recovery. So I cannot backup/restore my system easily. That's why I want to be sure I will not brick my system.

Could you tell me quickly how did you proceed to install it ?

Thank you.
[MTCB Android Head Units Q&A] sir sniffalot:
I've hooked up my DVR dashboard cam with HDMI output to the AV in RCA sockets on the back on my unit (connected via a USB powered HDMI to RCA converter). Image quality is not great but good enough for my purposes. I don't really use this function much but it's just a fun thing to try out and to show people when they're in my car.
[MTCB Android Head Units Q&A] Stank0:
Should've thunk that. :D

---------- Post added at 07:12 AM ---------- Previous post was at 06:22 AM ----------

Right. But the thing is, the illumination works, I can even change colors, it just won't stay on.
[MTCB Android Head Units Q&A] vahidp:
gsm call and messaging

hi to everyone

i'm new here

i have this device and i rooted my device properly

i have 2 problem

i want use my 3g modem for gsm calling and messaging

but this device is blocked this option

how can i unlock this?

and how can i install TAP interface on this device?

i try with TAP installer

but when i want use openvpn client app,device is reboot

sorry for my bad english ;)
[MTCB Android Head Units Q&A] 1-2-Hak:
KGL 1.99

Keylo has given me version 1.99 to test.

Will upload to the repository soon.

** on its way up
[MTCB Android Head Units Q&A] xrapidx:
Full rom?

I keep getting a System UI failure recently on startup, touch screen is unresponsive until a restart.
[MTCB Android Head Units Q&A] 1-2-Hak:
Full rom - full list of MCU mods.

I have found this error to come from the G.A.L.A app
[MTCB Android Head Units Q&A] xrapidx:
I'll uninstall and see what it does, thanks.
[MTCB Android Head Units Q&A] Navall2:
Does that include KGL1 (BMW)???

ANSWER - YES!

BUT: Archive Damaged!!!!!!!!!!!!!!!
[MTCB Android Head Units Q&A] Gaslight0:
It appears that the v1.99 archive file in the repository is damaged. I have tried downloading it several times and each time same issue. The error message I'm getting is "Unexpected end of archive".
[MTCB Android Head Units Q&A] vahidp:
anyone no idea?
[MTCB Android Head Units Q&A] kwalsh24:
I don't think 1.99 fully uploaded, as its only half the size of any previous full firmware release?
[MTCB Android Head Units Q&A] agentdr8:
It's supposed to stay on only when the parking lights/headlights are on. The wire that was connected for your dash illumination should provide +12V whenever the lights are on, prompting the MCU to turn on the headunit leds. I'd check that wire to make sure it's consistently providing +12V when your parking lights are on.

---------- Post added at 08:33 AM ---------- Previous post was at 08:26 AM ----------

Hak, maybe upload an md5sum (or put the sum in the description in .htaccess) so that people can verify they've got the whole file prior to flashing?
[MTCB Android Head Units Q&A] kwalsh24:
The archive doesn't extract, so its non usable
[MTCB Android Head Units Q&A] agentdr8:
I think someone else was looking for the TAP/TUN kernel module for these headunits, but was unsuccessful in getting it working. Building a proper module would be cake if they released kernel sources.

As for native voice calls, I don't think that'll ever work on the headunit.
[MTCB Android Head Units Q&A] xrapidx:
Did they give any indication of what was fixed in this release, too lazy to reflash without good reason.
[MTCB Android Head Units Q&A] saifbarry:
That would be me... and no I couldn't find a working module and gave up.

---------- Post added at 07:09 PM ---------- Previous post was at 07:06 PM ----------

I don't have custom recovery either. I installed from the Play Store and have been using it for a while now. Haven't had any issues.
[MTCB Android Head Units Q&A] jayvan:
I was/am getting random system ui errors long before I installed GALA (and before root but after I installed a few apps). Only on the occasional reboot and once it completes loading the OS I can dismiss the dialog box and everything seems to work fine. Thought about doing a factory reset and still might...
[MTCB Android Head Units Q&A] pakidermo5000:
- SAVED -
[MTCB Android Head Units Q&A] pakidermo5000:
Unlocked bootloader !!!

YES !!! BOOTLOADER UNLOCKED !!!

We have it !!

Yesterday I did something wrong, that's why the file was scrambled. But I fixed it, and now it's all for us !!!

I could only do it thanks to the indications found at Freaktab.com. So, all credits go to Mr. [MENTION=2637204]Finless[/MENTION]

Find the bootloader in the attachments.
[MTCB Android Head Units Q&A] nwskipro:
Excitement - I love it! Just don't know exactly what to do with this... must do research... But big thanks to getting this - I'm assuming it's a big deal!

My unit ships on Friday so if anyone can point me in the direction of what to research that would be great. Webdude - I know you were working on reducing the launch/startup time and removing unnecessary crap. Anything else?
[MTCB Android Head Units Q&A] pakidermo5000:
Look of Freaktab.com for Finless thread. It's about 44 pages of thread. You will find everything you need there.

Just, if anyone had the idea to modify system from ext3 to ext4 in order to speed up things... /system is already ext4 ... still have to check whether /cache and /data are also ext4. But, I guess they are...

I am off, until next week.

Have fun !
[MTCB Android Head Units Q&A] 1-2-Hak:
Can you give us a link to the thread? There is a lot there from Finless...
[MTCB Android Head Units Q&A] nexgen10:
I wonder if people would be more prone to buy these if there were an american distributor. I'm thinking about buying 5 of these and putting them up for sale. Maybe even unlocking and rooting them before shipping. I've been talking to the mfg about volume pricing and shipping costs. It might be a worthy investment.
[MTCB Android Head Units Q&A] webdude12:
Good job. An unlocked bootloader gives this unit so much flexibilty. Now twrp can be tweaked to allow "Custom" Roms

Things to do.

1. Add init.d support if not there.

2. Deoxed

3. Zip Align

4. Review startup process

5. Kernel Tweaks (Once have source)

6. Modify Partions for performance

7. General Performance tweaks (RAM, Cpu, Gpu)

8. Move all non-critical apps out of /system/apps

I'm still not a buyer of this unit though. The other unit I found, they are putting final tweaks on Android 4.2.2 and has two-way Canbus for the default apps (Radio, CD, MP3 Player). I have seen photos showing 4.2.2, but they said they are 15-20 days out and I'm waiting to order once its ready. If Keylo can have 1024*600 ready by the time I'm ready to order I will make that decision then.

---------- Post added at 03:05 AM ---------- Previous post was at 02:57 AM ----------

I was considering doing that exact thing. I was going to Root but not put the SuperUser app on it, as not to confuse users that have no idea what the app is or why its needed. Since its easy enough to download from the play store, it would be a non-issue.

But I have been playing with an android emulator at 800*480 resolution and as more and more apps are updated, this resolution is quickly becoming obsolute to the point this unit might as well have Android 2.3 on it restrict apps

I'm super excited about an unlocked bootloader on this radio as it might make developers pay these units more attention.
[MTCB Android Head Units Q&A] 1-2-Hak:
Did you use this tool to extract the bootloader?

http://www.freaktab.com/showthread.php?10033-Rockchip-AndroidTool-2-1/page2
[MTCB Android Head Units Q&A] pakidermo5000:
You can find everything here:

http://www.freaktab.com/showthread.php?287-RockChip-ROM-Building-Tips-and-Tricks-by-Finless/page2

It is very good and I learnt a lot. The problem is that you will ahve to read all the thread, because the info is quite scattered. Still, is the best source for total newbies, like me.

To unlock the bootloader, you have to use this:

1- Get webdude files, and take the files in there, boot.img.

dd if=boot.img of=bootimg.gz skip=8 bs=1 count=20000000
mkdir myboot
cd myboot/
sudo gunzip < ../bootimg.gz | sudo cpio -i --make-directories

### Now the bootloader is unlocked. Next lines tell you how to put it back into .img

.. DO CUSTOM EDITS HERE ...

sudo find . -exec touch -d "1970-01-01 01:00" {} \;
sudo find . ! -name "." | sort | sudo cpio -oa -H newc | sudo gzip -n >../customboot.gz
cd ../
rkcrc -k customboot.gz customboot.img

<<BOOT TABLET INTO FLASH MODE>>

# write the new boot image
sudo rkflashtool w 0x00008000 0x00002000 < customboot.img

# optionally reboot now
sudo rkflashtool b
[MTCB Android Head Units Q&A] 1-2-Hak:
So the boot loader isnt actually locked - just have to strip the header and retouch the files to put back.

I recommend using the tools I posted to to make a full NAND backup of you rom before you play.
[MTCB Android Head Units Q&A] pakidermo5000:
Yes, you are right. Technically speaking it is not locked. However, since you cannot mount it or unzip it straight away, it is "de facto" locked.

The first thing I will do is get a copy of my own system. And save it somewhere. Then, I will just unpack the and repack bootloader, and flash it, to see if there is any problem when doing that. Then, I can start modding.

I will use Rktools for all that.

My main aim is to reduce boot time. I am not an expert at all in modding ROMs, but a total newby. So I have no idea how to do that. At some point I will ask the devs of Ouku how they modified the original ROM to cut down the boot process to 15s. I think they moved some mounting process from boot to "after boot", and that saved some seconds.
[MTCB Android Head Units Q&A] jereid:
Are there any apps that will work to mitigate some of these issues. Something along the lines of LCD Density Modder

play.google.com/store/apps/details?id=com.birdapi.android.dpipro

or similar? Do these work?
[MTCB Android Head Units Q&A] 1-2-Hak:
I havent got my system yet to play :(

Keylo advises they are doing an update to the ODB2 so it works better so there is a delay for that.

Use those tools get a complete copy of your NAND and you will have something identical to go back too.

You can mount the system.img file and remove some of the bloat apps in there as well and do you own rom. Just be careful of the MTC ones they are the ones that talk to the MCU :)

Is there a change to init.rc we need to get TWRP working?