yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] alec.herrmann:
I bought this one from eBay.

1PC Black Slim 78 Key Mini Keyboard USB F Laptop Desktop PC

Item id 150655770631 (searching for this number should give you results).

USD$7.99 plus $5 shipping.

It is about half the size of a regular full size keyboard, and easily fits in my glove compartment.

Sometimes after leaving it plugged into the USB cable, it would become 'unrecognized'.

Simply unplugging it and plugging it back again and waiting a few seconds brought the keyboard back to life.
[MTCB Android Head Units Q&A] xrapidx:
Try it with a PC for awhile? Maybe the unit is faulty.

I installed the latest KDL rom last night, and my 3G has been working at startup everything... I now have another issue.

1.) 3G logo says its connected with full bars - but after about 30min there is no connection.

2.) GPS is struggling to lock - I've moved the antenna to the dash again to see if it helps

If its not stably by end of tomorrow - I'm installing the latest KGL update - see how that goes - I'm starting to get the feeling the updates aren't that compatible across the suppliers, at least from mu unit.

I was using 3G and GPS without issue for months on an early 4.4.4 update... wish I remembered which one.
[MTCB Android Head Units Q&A] pants001:
exactly same, mine says full bars but streaming radio stops....look in glove box and no flashing lights on dongle

might come back on for a minute then drops off again.

You had no luck with a new kernel by the sounds of your other post
[MTCB Android Head Units Q&A] matekhr:
I use the one like that:

http://www.ebay.com/itm/2-4G-RF-Min...104?pt=LH_DefaultDomain_0&hash=item46185b4fc8

So far, so good. Works OK with Malaysk ROMs.

BTW, the USB cable is for charging only!
[MTCB Android Head Units Q&A] xrapidx:
Kernel was a disaster - was lucky I could still get into recovery - had the vehicle running for awhile while I was looking for various roms to flash...

I'll check the lights on mine - but I think it retains connection to the network - its just the android side that drops, next time it happens I'm going to make a copy of the log to see if the device is still seen as attached.
[MTCB Android Head Units Q&A] halloj:
Thanks a lot. Will try it and report any findings.
[MTCB Android Head Units Q&A] buccaneerbob:
Sorry, sorry I only have the RK3066 ones.

---------- Post added at 09:30 PM ---------- Previous post was at 09:21 PM ----------

You can also enable permanent root by changing the build.prop entry persist.sys.root_access=0 to 3.

I've had a look at some older firware and it looks like this method may be present on all 4.4.4 firmware. Maybe others can confirm.
[MTCB Android Head Units Q&A] Blaze Falconburger:
I deleted the files referenced in the logcat with the error offset (0) bigger than file size (0) and touch wood, I have had 2 successful journies so far with no skipping. Thanks for your suggestion
[MTCB Android Head Units Q&A] xrapidx:
Its very easy to root KDL , you just type in a code? (posted a page or three back)
[MTCB Android Head Units Q&A] mike.s:
You may be able to dd the correct recovery image. If you adb (either via USB, or using ADB WiFi) to the unit, you can see how the partitions are mapped:

root@rk3188:/ # ls -l /dev/block/mtd/by-name
ls -l /dev/block/mtd/by-name
lrwxrwxrwx root root 2015-07-23 08:56 backup -> /dev/block/mtdblock4
lrwxrwxrwx root root 2015-07-23 08:56 boot -> /dev/block/mtdblock2
lrwxrwxrwx root root 2015-07-23 08:56 cache -> /dev/block/mtdblock5
lrwxrwxrwx root root 2015-07-23 08:56 kernel -> /dev/block/mtdblock1
lrwxrwxrwx root root 2015-07-23 08:56 kpanic -> /dev/block/mtdblock8
lrwxrwxrwx root root 2015-07-23 08:56 metadata -> /dev/block/mtdblock7
lrwxrwxrwx root root 2015-07-23 08:56 misc -> /dev/block/mtdblock0
lrwxrwxrwx root root 2015-07-23 08:56 oem -> /dev/block/mtdblock10
lrwxrwxrwx root root 2015-07-23 08:56 recovery -> /dev/block/mtdblock3
lrwxrwxrwx root root 2015-07-23 08:56 system -> /dev/block/mtdblock9
lrwxrwxrwx root root 2015-07-23 08:56 user -> /dev/block/mtdblock11
lrwxrwxrwx root root 2015-07-23 08:56 userdata -> /dev/block/mtdblock6

...above, the recovery partition is /dev/block/mtdblock3

recovery.img is contained in the upgrade.img files, you need to use imgRePackerRK.exe to extract it. Copy it to your unit, then there's a good chance you can dd it to the recovery partition:

dd if=/path/to/recovery.img of=/dev/block/mtdblock3

...be sure to check which partition is recovery on your specific unit, I'm not sure if it varies between manufacturers.

(I'm not responsible, if it breaks you own both pieces, etc.)
[MTCB Android Head Units Q&A] shadowfoxmi:
Hi Guys,

I have problems with my Klyde RK3188 unit remembering data and time. I confirmed that the unit definitely has functioning constant 12v battery line even with the key off. I contacted the seller and at first they sent me a replacement unit. It came with an improved canbus decoder that now the unit syncs time with the car and it still doesn't remember date and time between reboots and it's now a little more annoying that my car's internal clock is also getting reset now.

I contacted the seller with these problems with the replacement unit

Date and time getting reset between sessions - resets to 1/1/2011 7:00 am

Temperature units of measure is incorrect (minor inconvenience). It would show 70C instead of 70F. I toggle the setting and it will show 70F but next session, it will be back to 70C. the 70 part is right and it getting from canbus.

The radio presets get lost between sessions. I would do a search and save my favorite stations. THe next session, it would be all gone.

I contacted the seller again and they sent me a new MCU that seemed like it was build for me build date was (7/22).

It did change it so the display is always on when I start the engine. previously I would notice the unit booting up but the display was off and I would have to manually turn it on. I like this change and I didn't even ask for it.

It did not fix my date and time getting reset of the temperature units of measure problem. It did seem to save my radio presets but I lost the ability to search for stations and store.

My question is, are the tools to build MCU and the latest source available somewhere so I can try tinkering with them myself to see if I can fix the problems rather than waiting for one correspondence every other day from my seller?

Thanks
[MTCB Android Head Units Q&A] 1-2-Hak:
[MENTION=434511]agentdr8[/MENTION] Is it possible to add an xposed mod to change the notification color on malaysk std launcher rom. When you show the spotify icons in the notification they are white on white.

Has anyone tried the new kgl 2.64 from darkeo?
[MTCB Android Head Units Q&A] antvic:
Hi, thanks for your reply, but I must tell you that I have not understood much.

You could explain it as if it were a rookie. Don't worry, that if something goes wrong, you will not charge at all.

Thanks a lot
[MTCB Android Head Units Q&A] jperezch:
Do you know if this code works with other roms? Or it does only with Conqueror ones?
[MTCB Android Head Units Q&A] Marius B:
Hi !

Can make and for huifei HD rk 3188?

Thanks !
[MTCB Android Head Units Q&A] EuRomer:
This is totally different from Malaysk's 4.4.4 right?
[MTCB Android Head Units Q&A] -=Gerner=-:
Yes. This is much closer to the stock firmware.

.... -Malaysk's Firmwres has highly modificated....
[MTCB Android Head Units Q&A] EuRomer:
All I wanted is to change my screen density that's why i want to root my device. Is there any way to change it without rooting it anymore?
[MTCB Android Head Units Q&A] ooop:
It looks that way, KGL4, after typing code. root works
[MTCB Android Head Units Q&A] xrapidx:
What's the best way to set screen density... set it using an app 180.. but a lot of things like the launcher just shrink...

---------- Post added at 04:43 PM ---------- Previous post was at 04:12 PM ----------

There seems to be two new custom mcu.img v2.64 for KGL and KDL. ... anyone speak russian? :p
[MTCB Android Head Units Q&A] patagonia1:
The bluetooth configuration screen has a place to add a password, its like a general bluetooth password not specific to the hardware you are trying to pair, you can even even set it before connecting the dongle :eek:

---------- Post added at 06:38 PM ---------- Previous post was at 06:33 PM ----------

Sound Mixing problem

I doesen´t seem to fing more people with my problem (think even asked befor but cand finf it jejeje)

When I shift from Radio to another music app (jet audio, Spotify) radio goes mute, but when I´m in one of the other app´s and press radio button I end up with both sound outputs mixed together.

Played with some configurations on latest Malyask ROM (great rom!) but cannot find something that helps. Can somebody point me if it has been discussed or if something like Tasker would do the trick?

Regards
[MTCB Android Head Units Q&A] halloj:
Which upper corner, right or left, do you use to get out of the radio? If you use left upper corner the radio will mix with other sounds.

If you use right upper corner the radio will turn off. At least on my unit, Malyask ROM 3066/1024.
[MTCB Android Head Units Q&A] mike.s:
You will need to install ADB. You can get an installer here.

I will assume you can connect the unit to your home WiFi, and also have a PC connected to your home network.

Then, you will need to install WiFi ADB on the unit. Get it from Google Play.

Connect the unit to WiFi, then open the WiFi ADB app. Press the button to turn it on. It will tell you the command to type on your PC, something like "adb connect 192.168.1.100:5555"

On your PC, open a command window. How to is different on different Windows versions - sometimes Start Menu/Run/type "cmd". That should open a Windows command shell. Type the command WiFi ADB told you. It should come back and say something about being connected.

Then, on your PC, type "adb shell". You should get logged into the unit, and get a prompt like

root@rk3188:/ #

. If you get this far, you're doing good. If not, you'll need to search around to get answers.

Now, type "ls -l /dev/block/mtd/by-name" You should see something like this:

root@rk3188:/ # ls -l /dev/block/mtd/by-name
ls -l /dev/block/mtd/by-name
lrwxrwxrwx root root 2015-07-23 14:38 backup -> /dev/block/mtdblock4
lrwxrwxrwx root root 2015-07-23 14:38 boot -> /dev/block/mtdblock2
lrwxrwxrwx root root 2015-07-23 14:38 cache -> /dev/block/mtdblock5
lrwxrwxrwx root root 2015-07-23 14:38 kernel -> /dev/block/mtdblock1
lrwxrwxrwx root root 2015-07-23 14:38 kpanic -> /dev/block/mtdblock8
lrwxrwxrwx root root 2015-07-23 14:38 metadata -> /dev/block/mtdblock7
lrwxrwxrwx root root 2015-07-23 14:38 misc -> /dev/block/mtdblock0
lrwxrwxrwx root root 2015-07-23 14:38 oem -> /dev/block/mtdblock10
lrwxrwxrwx root root 2015-07-23 14:38 recovery -> /dev/block/mtdblock3
lrwxrwxrwx root root 2015-07-23 14:38 system -> /dev/block/mtdblock9
lrwxrwxrwx root root 2015-07-23 14:38 user -> /dev/block/mtdblock11
lrwxrwxrwx root root 2015-07-23 14:38 userdata -> /dev/block/mtdblock6
root@rk3188:/ #

Also type "cat /proc/partitions" You should get something like this:

root@rk3188:/ # cat /proc/partitions
cat /proc/partitions
major minor #blocks name

7 0 46809 loop0
7 1 3150 loop1
179 0 15351808 mmcblk0
179 1 15346011 mmcblk0p1
179 8 62367744 mmcblk1
179 9 62366720 mmcblk1p1
31 0 4096 mtdblock0
31 1 12288 mtdblock1
31 2 12288 mtdblock2
31 3 32768 mtdblock3
31 4 65536 mtdblock4
31 5 131072 mtdblock5
31 6 2097152 mtdblock6
31 7 4096 mtdblock7
31 8 4096 mtdblock8
31 9 786432 mtdblock9
31 10 131072 mtdblock10
31 11 4345856 mtdblock11
254 0 46809 dm-0
254 1 3150 dm-1
8 0 1003336 sda
8 1 1003305 sda1
root@rk3188:/ #

Then you can type "exit" to leave, then turn off WiFi ADB. Tell us what you got when you typed the commands above.
[MTCB Android Head Units Q&A] dviperbigt:
help rooting my unit

I need help rooting my unit I have carjoying unit with the RK3188 and 1024x600 screen. Mcu verison is mtcb-jy-v2.59 jun 4 2015. I just want to keep the stock looking theme but with root. I have searched and looked threw the forums and the more I look the more i get confused. I just would like someone to lead me in the right direction.

Thanks,

TJ W.
[MTCB Android Head Units Q&A] patagonia1:
Haven´t realized that, just tried and works as you say thanks. But my problem is shifting without "turning off" the other app using the hardware buttons. For example being in Jet Audio and hitting the Radio Button (it only works correcly if you stick to the stock music app) so for now harware buttons are not very usefull for me if I have to first stop one app and then turn on the other one.
[MTCB Android Head Units Q&A] Tomcsyy:
Can I connect a Bluetooth 4.0 dongle for the device (via USB)?

Did anybody try it?
[MTCB Android Head Units Q&A] Kimoo12:
Nokia Here Maps

Hi

Did anyone fixed the Here maps App that shows a blank page on settings ?
[MTCB Android Head Units Q&A] deedeebulldog:
I needed to replace my KLD unit and just got a JY. I ordered one with 1024*600 resolution, but the box it came in says 800*480. Is there a way to tell what resolution I actually have?
[MTCB Android Head Units Q&A] dviperbigt:
yes there is apps in the google play store. I downloaded one to check mine also
[MTCB Android Head Units Q&A] deedeebulldog:
thanks I checked right after I posted
[MTCB Android Head Units Q&A] echudoba:
Not that I know of, new release today still has a blank settings screen on our hu's. I did learn a work around by re-mapping the drive and found most of the settings in other menus. All the details are easily found if you search this thread for "here maps". All resent and on the first search page.
[MTCB Android Head Units Q&A] pants001:
Ive had my HU for around 6 months....ive found you just get used to pausing an app, hitting the Home hard button and firing up a different app.

Not too hard.....I think it gets really difficult trying to auto stop apps which are not controlled by the MCU which is the problem your facing now.

(Radio and default Music player are MCU controlled, if you exit out with back button - they will pause) Unfortunately i don't use either of these.

I cycle between spotify, Digital Radio and JetAudio and as mentioned, i'm just accustomed to hitting pause or stop first before jumping out. :good:
[MTCB Android Head Units Q&A] AlfonsoViolin:
I desperately need the Shenzen firmware that our mate Tap82 has managed to get.

Someone has it?
[MTCB Android Head Units Q&A] ChrisKA176:
Hi guys,

Is someone here who drive the huifei in a convertible?

I read the comments about brightness of the screen but convertible needs more brightness as a closed car.

With my actual Erisin i cant see nothing when roof is down.

Thank you

Chris

Gesendet von meinem LG-D802 mit Tapatalk
[MTCB Android Head Units Q&A] Ninonuk:
Not tested yet, but sounds not good!
[MTCB Android Head Units Q&A] darkleo2000:
Can anyone tell me model of MCU in android 4.2.2 hui fei dvd system?

Thank you
[MTCB Android Head Units Q&A] AlfonsoViolin:
Its marked in Preferences - Info of the tablet.

I need the Klyde 4.2.2 Firmware Tap82 please! If you read this..: I can pay you something if you send it to me!

Please!
[MTCB Android Head Units Q&A] Tap82:
Sorry I was away for the weekend. You don't need to pay me anything. :)

I have just sent you a Private Message.
[MTCB Android Head Units Q&A] agentdr8:
Visibility in my Z convertible is pretty bad, but I have yet to find a headunit that has high enough brightness to overcome sunlight. Even my previous Pioneer Appradio 2 had mediocre brightness, and a really glossy screen. I'd suggest looking for a glare reducing screen protector. It's something I plan to on getting for my Huifei.

---------- Post added at 10:55 AM ---------- Previous post was at 10:52 AM ----------

Ideally the mfg would fix it, and seeing that they do release new updates here and there, might be a possibility. But like you stated, they probably are unaware of the issue.

If I can figure out the necessary MCU commands to send to mix av channels, then I can probably fix it with my Xposed mod.
[MTCB Android Head Units Q&A] kwalsh24:
Hmmm okay so someone who bought there unit directly from the manufacturer needs to bring this up, I brought it up to my seller and all I got is 'its the latest version' which it isn't cause he didn't even mention a firmware upgrade :(
[MTCB Android Head Units Q&A] bhitman:
It is possible to create a MCTRADIO.apk, wherein the position of the frequency and of the RDS text are replaced/ exchanged? RDS text in large type and frequency in small ...

Interesting for the Europeans, especially Germany.
[MTCB Android Head Units Q&A] typos1:
Yes, decompile the apk, modify the xml, re-compile, add to system folder, or search the thread for better instructions.
[MTCB Android Head Units Q&A] h_kaufman:
Hi, new user here and recently recived my huifei Audi a3 unit and acidently deleted my igo primo SD card.. Downloaded a new version and installed but after initial setup it crashes? Im not good at doing this sort of thing but Im a fast Lerner ☺ could some one please help me?
[MTCB Android Head Units Q&A] agentdr8:
It's probably a setting in sys.txt. Try renaming it to something else or move it out of the iGo folder and restart iGo.
[MTCB Android Head Units Q&A] SilverS4sAreFaster:
Hey guys, been lurking this forum for a couple years on my other devices, finally decided to join before I make the wrong purchase.

I am looking at putting an android head unit into my 2007 Nissan Titan. The one I'm currently thinking of getting is ebay item number 191228099386 However I was wondering if someone could prove this is the Pure Android one it claims to be and if the updates in this thread will work?

Also, if I wanted to give it it's own data I know they sell 3G dongles, however I would rather run 4g. Is this doable?

Is this unit likely to give up on me in a year or 2? Or should it last a decent time if I do the mod to the screen clip highlighted in the opening post?

Lastly, Has anyone had luck with a windshield mounted 720P or higher dash cam? I'd like something with great night viewing and at a very minimum of 30 FPS, 60 would be best that will connect to the radio and use some play store dash cam apps.

I'm sure some of this stuff is in this thread but 160 pages is just too much to go through...
[MTCB Android Head Units Q&A] kwalsh24:
Think this could also be done to resolve gps mixing issue? Decompile both the radio and music app, look at the XML, and compare? I've never done anything like that so just a n00b asking maybe a dumb question haha
[MTCB Android Head Units Q&A] Macces:
Bricked KGAC-7681-Multimedia PURE ANDROID 4.2.2 for OPEL

For your Information,

I bricked my KGAC-7681-Multimedia PURE ANDROID 4.2.2 for OPEL ordered at android caraudio com

These devices are not compatible with the firmware in this thread. Flash was done without problems but the hardware buttons don't work after flash. Device won't power down after removing the key from the car. After cutting the battery wire device will never come up again.

Have no clue how 2 get it running again.

Greetings

Macces
[MTCB Android Head Units Q&A] agentdr8:
Someone who is well versed in smali editing might be able to. I find it's easier to decompile the dex to Java classes, and look through the code. Then override the code using xposed.

---------- Post added at 11:52 PM ---------- Previous post was at 11:49 PM ----------

You can try and get into the bootloader or recovery and see if you can flash it that way. Different methods to get into those modes are outlined on the 1st post. Not sure which would work for your device.
[MTCB Android Head Units Q&A] kwalsh24:
That there sir, is well over my area of expertise hahaha and I'm not ashamed to admit it. Programming was never my forte.

If someone could fix the issue, id gladly donate to their efforts lol. That along with the sub off thump & canbus issue is the only things letting me down on this unit.

Even a xposed mod would work, anything that will make it so radio and Gps work together :)

Next to get the latest igo to not be full screen so I can still use the radio apps within. I have tts working with it (or did, with the latest version out there) but it just takes over the entire screen so I can minimize it to access SD or Radio. Hoping its just a sys fix. Going to try and use the sys file with the new igo & see what happens. ---- edit --- This didn't work, will xposed do what im after?

Weird thing is I just had to do a factory reset, as I couldnt install any apk file, I would go to install but the screen wouldn't let me select install, only cancel. Hoping the reset fixes this issue. (It did)
[MTCB Android Head Units Q&A] dark alex:
Hi

want to present you another Bug - haha!

I know many of you tried Sygic within the last weeks.

So I also did. I purchased the world package and installed. everything is working fine. Just two things:

1st I get Connections drops on my 3G. It ried with the original dongle as well as with a T-Mobile Huawei stick (which is better in signal strength and connecting speed).

I recognised that the unit shhows a signal strength Bar and then it lasts up to multiple minutes until a Connection ist established.

Anybody else expieriencing this? Any change to make it faster?

I also never got a 2G connection. Eighter 3G or nothing... Would love to see it switching to Edge (2g) instead...

2nd and important problem:

When Sygic starts talking my other sound gets attenuated (correctly). then while still speaking it gets louder again. Whe Sygic finishes speaking it get attenuated for some seconds again. No matter on how I ste up the GPS settings... No Matter if using "Music" or Poweramp...

------------------ sidenote -------------------

Klyde Users... I mirrored the Klyde ROM for you:

http://huifei.fs-fileserver.de/content/firmware/Klyde-Firmware-for-brick-recovery/

//Edit: Just an idea... Anyone of you tried to use the HuiFei system.img along with the Klyde mcu image?
[MTCB Android Head Units Q&A] Macces:
1 Press reset button and power button together

2 After about 5 secs release reset button, but keep pressing power button

3 When booting screen appears release power button.

4 It boots into recovery.

This was the method working before I flashed the device. But I can't figure out how to do this again. I think the mapping of the buttons has changed.

I tried many combinations but it does not start in any way.

Macces
[MTCB Android Head Units Q&A] blankers:
I don't think this is a bug with the head unit, I am running Sygic version 14 ( I tried v15 but didn't like the interface ) and it runs fine. I have the settings set to "mixing" and "10" and the sound on the radio dims as it should when Syguc speaks.

I am running the latest head unit files.

I am uploading a YouTube video showing it and will edit this post when it's ready.......

edit: www.youtube.com/watch?v=2q9yPUC6-54
[MTCB Android Head Units Q&A] buccaneerbob:
It should work with any 4.4.4 rom. Try it.

---------- Post added at 01:09 PM ---------- Previous post was at 01:05 PM ----------

Use the ADB Root code, *#hct#root#, in factory settings to enable root temporarily. Change the DPI in build.prop then turn off ADB Root using adboff in factory settings.

---------- Post added at 01:10 PM ---------- Previous post was at 01:09 PM ----------

Try using ADB Root. See above.
[MTCB Android Head Units Q&A] agentdr8:
Sure, I can add it to my list of things.

The stock Video app is just an Android app, so it uses the "sys" volume. I'd recommend a different video player, such as MX.