yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] typos1:
If your SWC worked ok before the update, go back to your previous MCU version.

I spent a long time reading the AN21-U thread as well and there were quite a few issues with that unit too - issues are standard fitment on ALL Chinese Android head units ! (actually all non Chinese ones as well).

Sound quality is down to personal taste - mine sounds good and many people also say theirs sounds good (including at least 2 that have a lot of aftermarket ICE experience) but some also have said they think it sounds bad, but as its Android you can root it and install Poweramp of Viper4android, BeatsAudio etc, so it shouldnt be a problem whatever you think of the sound quality. Button mapping is also no problem - you can re-map them, there are 2 apps written for that purpose and navigation in background isnt a problem either, not sure where you got those ideas from - have you read the whole thread to put things in context ? - because the thread has been going for a year, its massive and there are so many posts youve really got to have read the lot to get a balanced view.

Although its kind of all irrelevant anyway as if I was going for a new unit I d look at either the Newsmy NU3001 or the Ownice units - they both use the RK3188 quad core processor and have 2Gb of RAM (optional on the Newsmy), theyre relatively new and as you probably know these Chinese head unit manufacturers tend to release stuff way before its properly ready and we get to do most of the development for them so the MCUs on these HuiFei type units are more mature than the MCUs in the Newsmy (RDS still not working on the Newsmy) and Ownice units, but they are updated regularly. Also there are a lot more facia types on the HuiFei type units for the same reasons. So I d say look at those threads (I d probably get the Ownice myself) and go for one of them, unless you really have to have a front facia that the 2 newer types dont make. Or you could wait and hope the manufacturers of the HuiFei type units upgrade to the RK3188, it would be quite easy, but I dont think theyre going to.

Whats "Image V14" ? Whats "BOO image" ? - Booroondook's ROM ?

Have you tried all the different key map layouts in factory settings ?

Have you tried all the different key map layouts in factory settings ?

Have you accidentally enabled "wheel3" in factory settings ? I had a very similar problem and it turned out to be this ("wheel3" seems to be a mis-translation of "freewheel", cant work out why anyone would want the control knobs to behave like that and why the setting even exists, but there you go).

Dont guess - check !

A tip ? Root it using a pre-rooted ROM, link on first page.

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

Its "factory settings" one of the last entries in the settings app, password "126".
[MTCB Android Head Units Q&A] iletumi:
Has anyone had issues with their head units drawing power from the battery even when turning the unit off via the power button? Had this JY unit installed for a few weeks now with no issues until a couple days ago. Three days in a row now my car has been drained. Quick charge and no issues the rest of the day. Dealer verified it looks like the head unit is still drawing some power after being turned off and the car shut off. Car was also shut off for longer than normal this weekend giving it more time to drain from the looks of it.
[MTCB Android Head Units Q&A] Ninonuk:
update_4_4_4_800X480_KLD_14_MAL_NEXT_LAUNCHER from Malaysk

KLD2_KK444_800x480_141126_root_mod_boo_201412-12_v1.0.0.zip from Booroondook
[MTCB Android Head Units Q&A] geezi:
Iv been in there no buttons that were physically on my factory headunit
[MTCB Android Head Units Q&A] typos1:
So yes, you do mean Booroondooks ROM and Malaysk's as well.

---------- Post added at 09:13 PM ---------- Previous post was at 09:12 PM ----------

Dont know what to say, I ve not heard of that before.
[MTCB Android Head Units Q&A] geezi:
Its basically like "Steering Wheel controls." Im not sure if it was in Settings menu or a separate application.

Same setup but it showed the buttons that were on the factory headunit.

Anyone with a opel or mazda (I think they use the same canbus) know or can check please
[MTCB Android Head Units Q&A] razormel:
[MENTION=6213127]geezi[/MENTION]

I think, i know what you mean - i try to take a picture of that app tomorrow. It could be the MTCServiceSettings.apk, but i'm not sure...
[MTCB Android Head Units Q&A] gy_ro:
Pull the connector with the power wires on the back of the unit and see if your battery drains. If the problem persists, it's not your unit ...
[MTCB Android Head Units Q&A] peti007:
I have KLD with MCU 2.20 too. I have just one connected phone (Acer S500 Cloudmobile) and it auto-connects but not every time. Sometimes I have to go to BT app connect manually. No need the full pairing process, just highlight the phone's name under paired devices and tap on the connect button.
[MTCB Android Head Units Q&A] gmanor77:
That's the process I do too.

Maybe one of the developers can fix this issue?

Thanks for the repay.
[MTCB Android Head Units Q&A] OneCheekyDevil:
I have this issue with my KGL unit too - a little annoying, but i just deal with it :/
[MTCB Android Head Units Q&A] typos1:
The SWC are controlled in the entry for SWC in settings, unless youre talking about Car Service or the Microntec Headunit app or the Car Service app, these are not system apps so will disappear if you update your system without backing up.
[MTCB Android Head Units Q&A] patagonia1:
Thanks, that solved the problem but I did not see the "wheel3" at first, it showed up after I changed screen density as I suspected there was something missing as I had one more tick than name for it, I had it ticked thinking it was for the name in the left.

Also, there was another setting that appeared with the density change: "rudder" I googled it and in another forum they say it corrects the open door signal in VW´s when they are showing incorrect door.
[MTCB Android Head Units Q&A] typos1:
Way before I played about with the density of my unit the MCU update that first added the "wheel3" and rudder options in factory settings dint show "rudder" properly (it showed as "rude" !! lol), it shows now so I guess subsequent MCU updates fixed it.

"Rudder" is a mistranslation of "steering", although what they should have called it was "RHD" (assuming that as most countries drive on the wrong side of the road (lol) by default its LHD).
[MTCB Android Head Units Q&A] cpframe:
update img.

I have a KLD unit 4.4.4 and have udated the mcu and installed Coudo's 4.4.4 udate. I wanted try one of Malaysk's rom. I've tried everything i can think of but cannot get it to install the update img. I've tried resetting the unit via the reset button and the factory reset with no luck. Any ideas of how to do this? Thanks for the help
[MTCB Android Head Units Q&A] tonettothebest:
no one?
[MTCB Android Head Units Q&A] Us-Marshal:
I've flashed my KLD with several roms. Just copy the update.img file to the root of an sd card and insert it into the sd card slot (preferably the GPS) and reboot. It should find the file and prompt to install it.

How are you trying?

---------- Post added at 02:50 AM ---------- Previous post was at 02:49 AM ----------

Have you looked at the first page/post of this thread? It explains the process and options.
[MTCB Android Head Units Q&A] cpframe:
Yes I've read how to flash the roms. The problem I'm having is the udate img. won't install. I get the prompt for the udate install, the system starts the process of installing but fails. I've tried with 3 different roms. I just can't understand why it fails
[MTCB Android Head Units Q&A] tonettothebest:
oh yeah i read the first page but i can't find anything about bootloop or other stuff like this. i read about TWRP , the no touch control and blablabla but i would like to know if (in case of bootloop) twrp is the only way to save my system.
[MTCB Android Head Units Q&A] jkchr1s:
Well, it looks like I finally got my horrible sounding audio fixed once and for all.

My speakers sounded like they only output treble, and the midrange sound was either non-existant or sounded like it was playing in mud or something. I was running Condu's 4.4.4 KLD ROM from the end of December (which sounded worlds better than the stock 4.2.2 Klyde ROM)... but tonight I flashed Condu's KGL 4.4.4 ROM from Feb 2 and... WOW! It's like I actually have a quality sounding head unit again.

While on the Condu 4.4.4 ROM late Dec ROM, I replaced the CANBUS adapter and also had to switch the factory settings adapter to make the Amp settings do anything (adjustments made no difference in sound quality). Changing the CANBUS in Factory settings made the Amp settings do *something*, but overall sound quality was still horrible, missing a wide variety of sound frequencies. The woofers on my 6.5" speakers hardly moved at all, but treble was blaring loud as can be. I flashed this KGL ROM with the correct canbus adapter and the correct canbus setting in factory settings BEFORE flashing. Not sure if this made any difference in quality (re-flashing after changing to the correct canbus settings), but it really did make the sound quality come to life.

I know there are a handful of others on here that said they were missing midrange sound and just an all around muddy sound, and at least for me, the Feb 2 Condu 4.4.4 KGL ROM 100% resolved my sound quality issues. I'm now happily running a Klyde unit that sounds way better than my factory sound system (which I must say had about 50% of the quality of the factory HU running the KLD ROM).

The only issue I had was, initially after flashing, my volume knob did not change the volume. After a reboot, everything was working 100%.

Thanks Condu!!! Those with sound quality issues, try this ROM! It was a miracle worker for me. :D
[MTCB Android Head Units Q&A] geezi:
What is SWC settings?

No im not talking about Car service etc

Thanks
[MTCB Android Head Units Q&A] comptechltd:
SWC = Steering Wheel Controls

---------- Post added at 11:26 PM ---------- Previous post was at 11:18 PM ----------

I have flashed several times. First make sure your downloaded .img file is good. Place it in the root of an sd card and put it in the gps sd card slot. If it doesn't pop up in a few seconds asking if you want to install update.img then press in the reset button for about 5 sconds with a pen and also hold the power button until it beeps the release the power button. Select the ommand to update.img using the volume control and then long press the power button to select it.

Now that I think about it there was 1 ROM that I had trouble with. I pressed the power button and could never get it to select. I think I wound up using a different ROM. I don't remember right now what I did.

Steve
[MTCB Android Head Units Q&A] devilsoft:
I think I know what app are you missing. I also missed that in [MENTION=853627]coudu[/MENTION] latest roms, and it's called "Control Settings". With this app, you can access car settings like Date/Time, BC1, BC2 data, etc.

I uploaded the apk to this post. Install this MTCControlSettings.apk as a normal app.

P.S. [MENTION=853627]coudu[/MENTION], please add this app to your releases, as we need this app a lot. It's the only way we can access the internal car settings.
[MTCB Android Head Units Q&A] RekoOo-77:
KLD

Dears,

I have unit for my car KLD I have issue with OBD and BT my MCU version:

MTCB-KLD-V2.20. There are new update ?!
[MTCB Android Head Units Q&A] devilsoft:
Try also the Viper4Android, and you will notice a HUGE difference in sound quality.

For anybody interested to use Viper4Android, follow this steps:

1. Install the apk from this post

2, Install viper fx drivers when prompted (Choose Super Audio Quality)

3. Restart device

4. Open Viper4Android from Launcher, go to menu, then click "Lock Effect Mode" and choose "Headset"

5. Go To Menu, click "UI Setting" and choose "Expert", to gain access to more options

6. Go to "Headset" tab, and click "Enable"

7. Enable and play with different options, according to your taste in sound :)

In PowerAmp, in order to enable Viper4Android, you need to uncheck "Direct Volume Control" from Settings -> Audio -> Advanced Tweaks

To start Viper FX from install-recovery.sh, use this command:

am startservice com.vipercn.viper4android_v2/.service.ViPER4AndroidService

Viper FX affects all the apps sounds (autio player, video player, bluetooth, youtube, etc), but not Radio, which is MCU controlled.

P.S.

More about Viper4Android, can be found here: http://xdaforums.com/showthread.php?t=2191223
[MTCB Android Head Units Q&A] pk313:
hi, i'm new here.....and sorry if my english is not so perfect..:)

...The.. Pure Android Car stereo are quite new for me, i read hundred and hundred ...here

i have installed on my Car (kia Sportage) a 4.2.2 KLD 2.20.....this:

i'm happy about that, good sound, good dvd player, good touchscreen, igo navi preinstalled is fantastic, bluetooth and wifi working perfectly with phone

...but some small things... and i hope i will have some help from xda...full on genius!!

1 Radio: .nice FM radio receiver signal , AF seems working (in italy driving on the mountains you need), RDS is working, but PTY show wrong type name... i.e for a music station (99%) have to show .. MUSIC but show RELIGION !!!!! so on the side on station name i see always RELIGION ..!! Something to do?

2 With my surprise no widget selectable, i was thinking that as android, lots of wiidget was present, i.e radio in homepage have only the default and i don't like, but i can't change

3 OBD BT interface immediatly reconized (as u can see on pics, ) but app's like torque(tried several other apps too) don't found.

If some of you found same problem and have try to solve... i hope can help me! http://cdn4.xda-developers.com/images/icons/icon7.gif
[MTCB Android Head Units Q&A] cpframe:
Thanks for the response Steve, i understand the flashing process. The instructions on the first page are very precise. I have already flashed Coudo's 4.4.4 rooted rom. The trouble I'm having is flashing a new rom. I'm not sure how to check the update img. to see if it's good, I've tried 3 different ones with no luck. Frustrating!. I'm going to try another one today and see what happens. Btw, i updated the mcu from 2.12 to 2.20 first, then flashed the rom. Even though the update img. I've tried have failed i was able to flash the mcu back to the 2.16 version. Thanks again for the input, any and all help is appreciated.
[MTCB Android Head Units Q&A] Krisjan89:
thank you thank you thank you

Just updated to the rom you recommended, the sound quality has improved signigficantly. Thank you so much!
[MTCB Android Head Units Q&A] starshy:
BMW E39 with KGL Erisin radio,

still have problem when radio was on and you cold start the car (radio), it freezes every time, sometimes on boot sometimes when booted already, then pressing reset button and it works properly (but then it does not autostart radio), when turning off radio app before shutdown, the boot works.

Sometimes Radio turns on and plays music, but screen is frozen, sometimes screen fills slowly with white pixels, sometimes it's just black screen, but after 1 or 2 resets it always work, maybe also cold soldering somewhere?

Tested with stock 1.77 KGL1 MCU,Android 4.2.2 and 2.22 MCU KGL5, Android 4.4.4

I think that has something to do with the radio, is there any other mtc radio app?

Will try 1.86 MCU today.
[MTCB Android Head Units Q&A] typos1:
Or the built in Music app which is also MCU controlled.
[MTCB Android Head Units Q&A] devilsoft:
The build in Music app works excelent with Viper FX! You just need to disable the "Animated Graphs" by pressing the button from middle-right. If that graphs are displaying, then Music APP uses MCU directly, so just disable that with the button,
[MTCB Android Head Units Q&A] typos1:
I afraid they all get the programme type wrong, you could decompile the radio apk and try and change it. Good to hear youre in Italy and AF works, several people have said it doesnt work in Italy.

---------- Post added at 11:41 AM ---------- Previous post was at 11:38 AM ----------

The built in Music app is controlled by the MCU (its called MTCMusic.apk !!), what makes you think it isnt ?
[MTCB Android Head Units Q&A] RaZi3L_:
hi!, What are those applications that allow remap physical buttons?
[MTCB Android Head Units Q&A] typos1:
Try installing from recovery.

---------- Post added at 11:45 AM ---------- Previous post was at 11:43 AM ----------

Bootloop has happened very very rarely, do a thread search if you want to find out how the very few people who had this problem got out of it, otherwise just go ahead and intsall the update.
[MTCB Android Head Units Q&A] devilsoft:
Because I have Viper FX working with MTC Music really well, if you press that button. Like I said, pressing that button, the app process the sound with android instead of going straight to MCU sound process.

I can make a video if you wish, but you can also test a little and you will see that i'm not wrong.
[MTCB Android Head Units Q&A] typos1:
It is not missing, ALL units have it, but CAN Bus needs to be selected in factory settings and then it will appear, but not ALL CAN Bus vehicle settings will make it appear - for instance a quick test sees the app showing up if CAN Bus is set to VW simple, but not if set to Honda Civic/CRV simple.

---------- Post added at 11:55 AM ---------- Previous post was at 11:52 AM ----------

Physical buttons ? There are no apps for that, there are some settings in factory settings for button/key layout, try them, if thats no help, then do a thread search, it has been mentioned i the past but I cant remember when or how to do it.
[MTCB Android Head Units Q&A] devilsoft:
Well, I saw that the app was fizically missing from the rom. At least is missing on coudui rom 4.4.4 from january (and maybe from december too, but didn't test that). In Malaysk ROM 4.4.4 is present.

Both roms were configured to have the correct CANBus. I extracted the apk from Malayks rom, and then installed on coudu, and worked.
[MTCB Android Head Units Q&A] typos1:
You have no actual evidence apart from your ears ?

I would like you to be right, but I dont think you are - its an MCU app and I cant see how turning off what is simply a display option would make the sound get processed by Android, for this you have to do a hardware mod on the motherboard, see the thread on 4pda.ru for details.

Like I say I want you to be right, got an other evidence ?
[MTCB Android Head Units Q&A] devilsoft:
OK, i will try to make a video (hope I will get the right result to prove I'm right). I was playign with this HU's from 4.2.2 to 4.4.4 and all ROMS acts the same. In my opinion, that graphs are displayed by communicating directly with MCU, so it must switch somehow between MCU and Android sound processor. But it's just my guess on this. The difference is 100% obvious, and I will show you in the next video.
[MTCB Android Head Units Q&A] tonettothebest:
I try to search but i havnt find anything about it.

I know that is difficult to have bootloop but a flashmaniac like me always find a way to do something wrong. expecially with xposed control i'm afraid to use a wrong module and so have bootloop. So now you can understand....
[MTCB Android Head Units Q&A] typos1:
The graph is just a spectrum analyser display, it should not affect the sound, it will get info from the MCU for the display, certainly, but turning it off will not make the sound go via Android. I dont think a video would help either, I meant programming evidence ie code.

Like I say, I d like you to be right, but its an MTCapp and is controlled by the MCU, not android.

---------- Post added at 12:19 PM ---------- Previous post was at 12:18 PM ----------

I m afraid I cant because bootloop has happened so rarely.

I ve just searched "bootloop" in the thread search box and there are 2 pages of posts that come up going back to April, so I m confused how you have not found any mention of it.
[MTCB Android Head Units Q&A] pk313:
thanks, :)

BTW.. AF work just it's slow...means that start to look for other frequencies after approx 30 seconds signal is poor....

i will try to see if i'm eable to decopile Radio ApK if permitted

Somebody know if some simple App ..without root...permit to change the homepage..like add widget or additional controls?
[MTCB Android Head Units Q&A] devilsoft:
I uploaded the video here: https://www.youtube.com/watch?v=N-9buk63EZY

I hope you notice the difference in sound. I repeat the step several times (pressing that button from time to time)
[MTCB Android Head Units Q&A] typos1:
Widgets appear if you keep swiping right after apps, you have to be on the second page of the launchers screen before you press the apps button as the first has the built in weather and music/radio/bt music widgets (assuming you have the KLD launcher, the KGL and JY ones allow you to have widgets next to the built in widgets). Install another launcher if you dont like it.

---------- Post added at 12:50 PM ---------- Previous post was at 12:43 PM ----------

Well I can hear a change, but it actually sounds worse when you turn off the graphic display (although I appreciate that a Youtube video recorded on a phone is not he best way to detect sound quality changes - if you think it sounds better I m not going to disagree).

I cant see why the sound would change if you turned that display on or off, it doesnt on my unit, although I dont have Viper installed currently (I removed it).

Unfortunately your video doesnt prove that Viper is taking control of the audio, it just proves the sound changes if you turn the analyser off, hopefully someone else will chime in and say what it happening here.
[MTCB Android Head Units Q&A] Karanso:
:mad::mad:
[MTCB Android Head Units Q&A] devilsoft:
I just increased the LOW sound values to make a distinction. I have no other MusicFX installed besides Viper, so there is nothing which can change the sound. Like you see in the video, the sound profile remains in CUSTOM, which that is the FLAT profile, but having values lowered a little. The sound in car with Viper FX is amazing, really. Try to install it like I said in my tutorial post, and you will defenetly see what I'm talking about.

---------- Post added at 02:56 PM ---------- Previous post was at 02:53 PM ----------

That's weird :) The video has no restriction
[MTCB Android Head Units Q&A] typos1:
Yes, I have installed it in the past and it sounds good, but it did not affect the built in music app and as I ve found no other music apps that like apart from the built in one, I un-installed Viper as it did not affect it because its an MCU controlled app.

I cant say what is happening here, but nothing confirms that Viper is taking control.

As I ve said I want you to be right cos I use that app, but all the info that has been gathered in this thread over the past year says you are not.

I will re-install Viper and see if I can replicate what you are getting. Hopefully someone with more Android knowledge than me can say what is happening.

---------- Post added at 01:02 PM ---------- Previous post was at 01:01 PM ----------

It seems Youtube from his country is blocked from your country, there are ways round it, download it using download helper, get an add on for your browser that lets you view Youtube from any country, google it.
[MTCB Android Head Units Q&A] devilsoft:
I have android knowledge, as I'm an Android Developer, but have no time to check what's happening in decompiled MTCMusic app, but when I will have some time, I will come with an explanation for sure.

I have no reason why to lie, or just misleading anybody with Viper FX. I'm using it with success from the moment I got the HU, and what I say, it's from my own experience.

I'm really curious how Viper FX it's acting on your HU, so we can help other users with this. This is a very important feature of this HU, to be able to improve the sounde experience in our cars.
[MTCB Android Head Units Q&A] tonettothebest:
I didnt say that bootloop had no result in searching.... i'm just telling that i didnt find anything about my question: how to figure out bootloop