yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] ArbitraryNoise:
Multiple key codes, or "Key Bounce"

People who are having this problem are getting what is known as "key bounce" - doesn't matter if it's a button instead 8-). It is a physical problem, the key makes and breaks contact several times. It depends on the actual key or button used, thus sometimes a key repeats 2 times, sometimes 3 or possibly even more. [MENTION=260979]keysersoze[/MENTION]yFR knows that, and added the software option to ignore multiple key codes from the same key; it's software "debouncing", rather than a hardware solution. The solution to your problem is to install his software and turn on the key code filter.
[MTCB Android Head Units Q&A] ArbitraryNoise:
USB to OBDII cable or 4.4.2 BT & Torque woes

1) Your OBDII Bluetooth adapter has to have "OBD" in it's 'name', or Torque won't find it. Search this huge thread to find out if that's a Torque problem or a Kitkat one. 2) There is something called an OBDII to usb cable / adapter. Torque finds it immediately. It has the advantages of avoiding BT altogether and updating data much faster. There was an extensive discussion of this fairly early on in this Huifei thread, you can get more exact info and tips on where to buy such a thing by a good search. I am not going to find this for you. When you find the relevant posts, you can post a link or 2 to them. Internal links are not blocked in posts by new members like me and other newbies. I'm beginning to think people who find such links should also pm Pakidermo5000 to include such info on his first page initial post.
[MTCB Android Head Units Q&A] agentdr8:
I sent a broadcast intent via terminal. I don't recall off the top of my head which one, but it's something like am start -a com.android.settings.DeveloperSettings

The TP-Link MA180 device/product IDs show up in the usb_modeswitch.d directory for the older JB 4.2.2 roms. I haven't looked yet to see if the KK rom still utilizes usb_modeswitch for modems, but assuming it does, if the definition is already there, then you should be ok with just plugging it in before the headunit has power, and then power it on.
[MTCB Android Head Units Q&A] ArbitraryNoise:
Antenna signal amplification

You might want to search the thread for signal (antenna) amplifiers. I think I first saw a post about adding one and then posts about where in the wiring harness to connect to the power for the signal amp. In some cars, like mine, you must use the built-in signal amplifier or reception is crap. Edit: The connections from the HU to the signal amp are not always properly wired in. One way to tell is if you have a tiny 6" or 17cm antenna on the car, embedded antennas (in window glass) may also routinely be in need of amplification.
[MTCB Android Head Units Q&A] hititup:
How much better the 1024x600 screen look compare to the 800x460. Can u say if is like nite and day? I am just wondering what I give up.

I order a Ownice universal unit with 6.2" screen I was hoping to get it in 1024x600 but they don't sell the 6.2 " unit with 1024x600 screen but i still order cause it coming with Quad core, 2G ram and 16G memory. What u guys thinks?
[MTCB Android Head Units Q&A] webdude12:
Good News: I did manage to get TWRP installed. Just FYI, the 1024x600 is still an 800x600 display. But it still works

Bad News: ADB still would not see the unit. There is an error with the drivers on my laptop, even though it works with RK Tools in Bootloader mode.

Sad News: So I created a TWRP zip update file to load SU, BusyBox, the Root Daemon, and Superuser. As well as modify build.prop for a few things. (Fix Screen Resolution, make the unit look like a samsung 7" Tablet, change a few menu options, etc).

While the files were copied over and my build.prop works 100% like I wanted it to, I still do not have root. Superuser says the SU binary is not installed. I pulled the SU binary out of the update.zip system.img, so my guess is got corrupt. When I get some more time, I will try to extract them all again, and try one more time, as the TWRP zip file works great. :)
[MTCB Android Head Units Q&A] staneb:
I've fitted RCA connectors to the wires I cut in the harness.
[MTCB Android Head Units Q&A] ktibor69:
SW problem

The MCU upgrade isn't solving the problem.

I thing the chance of SW configuration is in the canbus.apk.

I downloaded canbus 2.03. Maybe it newer and repaired version. How can I replace canbus.apk in the HU?

---------- Post added at 09:39 AM ---------- Previous post was at 09:04 AM ----------

I would like to modify the skin of the radio. I like bigger RDS info, and smaler frequency. I like new field for Radio text info, anfd independent station name from RDS.

How and with what can I modify the origin radio app on my Windows PC. I'm beginner in the android programing.
[MTCB Android Head Units Q&A] ESTIMULO:
The one that worked for me with the correct buttons asignament was MTCB-KGL v2,09 (whithout numbers), the second better was MTCB-KGL4 v2,09.

Anyway we don't get working any door, air condition info, etc. Only buttons

I have a BMW E90 320 automatic

I tryed all of them

KGL, KGL1, KGL2, KGL3, KGL4, KGL5
[MTCB Android Head Units Q&A] ktibor69:
I didn't delete the original MTCMusic.apk with Total Commander app. I think the device isn't mounted as r/w.

How can I mount my device to r/w?
[MTCB Android Head Units Q&A] mrbubba999:
If you manage to modify it, post the result here as the radio app is poor
[MTCB Android Head Units Q&A] J0sh_FG:
Glad to hear that about the glare of the screen.

SWC support for 3rd party apps would be the key for this unit (my priority is to get rid of that horrible music player native app )

Regards
[MTCB Android Head Units Q&A] Hanker.yu:
System Update for Voice App Access

The Updated system is finished today, testing.:)
[MTCB Android Head Units Q&A] J0sh_FG:
Great news ! Keep us updated please :fingers-crossed:

Cheers
[MTCB Android Head Units Q&A] sk0815:
Navigon

Does anybody know if NAVIGON NAVIGATION is working on this device?
[MTCB Android Head Units Q&A] dark alex:
I will check this within next days...
[MTCB Android Head Units Q&A] 1-2-Hak:
Hi Hanker,

What changes are you able to make to the rom?

Can you modify MCU firmware and Android code?

Would love to work with you to make this software even better :)
[MTCB Android Head Units Q&A] 1-2-Hak:
Ok. Got link to new code. Will test later today
[MTCB Android Head Units Q&A] drt1394:
Updated firmware from Hanker fixes bluetooth microphone issue for me! One issue down. Hoping the MCU update fixes the issue with no button backlighting I was having (won't be able to test that until I get the unit in the car). Still rootable using that Chinese RootMaster tool.

I'm learning about XPosed framework. 1-2 Hak, have you ever used this? Looks pretty powerful and could be a great way to hook into some of the MCU code without having to **** with smali, resigning apps, etc. If I have time I'll write something to test with it.
[MTCB Android Head Units Q&A] genge:
Please if possible share new firmware link. Thanks
[MTCB Android Head Units Q&A] gardarik:
_http://goo.gl/ilcqoD_
[MTCB Android Head Units Q&A] 1-2-Hak:
The Xposed framework works well. I used it to test some of the MTCManager calls initially unti I started to decompile it.

---------- Post added at 02:31 PM ---------- Previous post was at 02:25 PM ----------

I have check the changes on the new update an a lot of Binaries are different - which is good.

It seems like a recompile has been done - like I have been doing and the result is similar boot times to my previous mods of around 15-18 secs. Which is great news. :)

The MCU update is much bigger than the previous one but dont know whats changed.

** A weird thing I am getting now is a crackle from the speaker. If I turn on the unit with out radio I can hear a crackle. Mainly from the right hand speaker.

It doesnt change with volume and if I start the radio it seems to disappear. kind of like its stuck off a station.

I flashed back the old mcu and had the same noise. Really weird as it definitly wasnt there before.

If anyone else notices this let me know.

Still have issue with brightness not dropping enough when the lights are switched on.
[MTCB Android Head Units Q&A] drt1394:
In other news, the newest Spotify update is nearly unusable on the low resolution display. The persistent menu-bars only leave room for about 1 to 1.5 song titles to display on the screen at a time. Makes me second guess my decision to go with the HuiFei vs that 1Ghz 4.1.1 unit with the 1024x600 display. Which honestly even those extra 200pixels may not make a big enough difference. Tried playing around with the DPI in App Settings XPosed module but I can't get it to have any effect on spotify. Anyone have any luck with that module in the past?
[MTCB Android Head Units Q&A] nexgen10:
What issue are you having? Have you wired the orange wire off the radio harness into the dimmer or illumination circuit? In my VW it was a grey wire with a blue stripe. I had to pin the orange wire into the harness, as it was hanging loose off the radio harness. If you want the buttons lit all the time, just splice orange into the 12v accy wire.

---------- Post added at 03:58 PM ---------- Previous post was at 03:56 PM ----------

I think we need to lay this at the feet of the app developers. They should include support for different resolutions. Alternatively, Google play music is an ok alternative to spotify and it works well with the unit.

---------- Post added at 04:00 PM ---------- Previous post was at 03:58 PM ----------

Where did you get the code from? Can you provide the code or a compiled version to flash? I still have 3 units sitting in boxes for testing and sale that I can use to test against.
[MTCB Android Head Units Q&A] kwalsh24:
Has anyone ordered one of these units lately? Has the wiring issue been resolved that nexgen10 mentioned ? Any crazy battery drain issues with the units?

As I'm torn between this unit, or one similar which has onboard diagnostics via a obdII dongle

http://www.aliexpress.com/item/Capa...iguan-Golf-5-6-Car-DVD-Player/1781061262.html

Edit, after reading the entire posting.... Seems as tho the whole onboard diagnostic thing isnt just a one off for that unit linked, just a selling ploy haha
[MTCB Android Head Units Q&A] J0sh_FG:
Could you post a pic of how that spotify new interface looks on your screen?

Thanks mate
[MTCB Android Head Units Q&A] Dareksa:
I bought this unit lately and it seems that this problem has been fixed.

You can connect OBD diagnostics to this unit via bluetooth.
[MTCB Android Head Units Q&A] booroondook:
You can resolve this problem by decreasing of the screen density.

Open your /system/build.prop file, find "ro.sf.lcd_density=240" in it and change "240" to "180". Then save the file and reboot the device.

Note: you must have a root access for file editing.
[MTCB Android Head Units Q&A] webdude12:
As a developer myself, I can tell you I have never, and never will write extra code for an 800 x 480 device. These devices are so little in the mix, and even those that have them are not in my target audience (Grandmothers, lower income, etc).

I am in talks with one of the companies that is working on 1280 x 720 screen and they seem to be open to the idea of giving us an unlocked bootloader and root on shipping. They seem to understand what I try to explain to HuiFei and Keylo in the beginning. They are out to sell hardware, and if they can provide a unit that the "Hacking Community Loves" then this should (and will) translate into more overall sales.

The bad new is, these units are still in development and they are telling me late July before I can even get a demo unit. :(
[MTCB Android Head Units Q&A] kwalsh24:
Hmmmm not so sure if I can wait that long for a good radio again in my car lol. Sigh.
[MTCB Android Head Units Q&A] drt1394:
I messed around with the LCD density parameter at one point and it seemed to wreak havoc on the launcher interface. Interesting that the LCD_Density default is set so high. Looks like they are basically trying to force phone UI mode. Not really sure why that is.

FYI, here is some good reading on how the LCD Density parameter is used in case anyone is interested (I had to read up on it a bit to understand where it is actually used) http://developer.android.com/guide/practices/screens_support.html#DeclaringTabletLayouts

---------- Post added at 08:03 PM ---------- Previous post was at 07:59 PM ----------

Are you speaking of LSQ star that you mentioned earlier? Are they the actual manufacturer of the units? It was unclear when I was looking on their alibaba page when you first brought them up.

The annoying thing here is that it sounds like the UI software is what is holding HuiFei back on their HiRes version. I'm sure we could collectively whip something up with for them for free with just access to some hardware specs and/or the MCU code in no time. Oh well.

UPDATE-- just looked up LSQ star and it looks like they are the manufacturer, but their model for BMW e46 (my vehicle) is not even an android device. Yuck. Are you looking at their generic models? Or a different supplier entirely and I'm way off base haha.
[MTCB Android Head Units Q&A] kavo77:
OK so I see XposedMTC can make any BT OBD sensor connect if its name is OBD

I have a BT TPMS sensor named TPMS. the code is either 1234 or 0000 i cant remember. but would it be possible to make XposeMTC force connect to it? at the moment the KGL wont connect as it wont prompt for the pin.
[MTCB Android Head Units Q&A] ktibor69:
Of chourse, but before I need help.
[MTCB Android Head Units Q&A] coudu:
I think resolution is 1024x600 but the scaling factor is wrong. I'll post a new image that will fit the whole screen.

adb is not absolutly needed, it's good you have bootloder access to recover in case of big disaster.

did you make a backup with twrp before flashing your zip (would be better to have original files)? I so can you give us the backup of boot kernel and system (maybe recovery if you backed it up before flashing twrp) :fingers-crossed:

I thought there was a builtin superuser/rooting menu in twrp...

edit:no root menu but there is a superuser folder in rootfs so you can use the builtin file manager to copy files to system
[MTCB Android Head Units Q&A] typos1:
You need a ground loop isolator.

---------- Post added at 10:58 AM ---------- Previous post was at 10:53 AM ----------

You can get 2 types, one for connecting to RCAs and one that has a built in high/low converter. Google "mazda bose adapter"

The high/low converter works best, the sound was a bit muffled using the RCAs on mine and I ve heard other people say this too.

---------- Post added at 11:00 AM ---------- Previous post was at 10:58 AM ----------

Read the thread !! Its a known problewm and is being worked on !

About the BT problem :

I ve spoken to Klyde and they say they need to supply me with software for BT OBD, I explained that it worked with 4.2 and asked more about it, but not heard back yet.

---------- Post added at 11:04 AM ---------- Previous post was at 11:00 AM ----------

If Tom Tom doesnt work, it is not true to say you havent got a "viable navigation app for your HU" - there are many other nav apps, Tom Tom is NOT the only one !

---------- Post added at 11:10 AM ---------- Previous post was at 11:04 AM ----------

You need to decompile the xml file in the app, do a thread search to find out how to.

---------- Post added at 11:12 AM ---------- Previous post was at 11:10 AM ----------

I assume your unit is 4.2 - there is a problem with BT for non phone devices in 4.4, as has been mentioned many times.
[MTCB Android Head Units Q&A] webdude12:
TWRP works fine, just wanted to let you know it wasnt filling the screen.

You are correct ADB is not absolutely needed, but it would be nice to have when you are really use to using it to push files, etc.

I have not made a backup yet, because what I did first was install twrp, see it worked. Then flashed back the original recovery and did a system restore to see if that worked. It did. So I knew I had a way to go back to 100% stock.

I will try to the SU in the rootfs, see if Superuser like that any better then the ones I pushed.
[MTCB Android Head Units Q&A] zaphod2:
I've played around on the radio app today. as you can see is the frequency of small, but how do I get the name send larger I can not find out. which is overlaid.
[MTCB Android Head Units Q&A] dadino:
do you think that all this apk, will work on my HU from zhinavi? is androd 4.2
[MTCB Android Head Units Q&A] typos1:
Yes it will.
[MTCB Android Head Units Q&A] agentdr8:
It can override the requirement that your device have 'OBD' in its name. It will actually bypass the pairing/PIN screen and just pair with the device. I tried this with my V1C Bluetooth adapter and it paired just fine, but YaV1 couldn't control it for some reason. Not sure if the BT stack includes all the profiles like Serial, HID, OBEX, etc.
[MTCB Android Head Units Q&A] ktibor69:
Which type and version android firmware is your DVD player?
[MTCB Android Head Units Q&A] safak:
I have KGL 7061 on my Captiva.

Downgrading back to 4.2.2 did not solve obd2 bt connection...

Can someone suggest a working combination of MCU-Kernel-Firmware ?
[MTCB Android Head Units Q&A] dadino:
http://www.zhinavi.com/Hyundai/Hyundai-IX35-Android-gps-dvd-N.html

i have this unit with some issue the first is long time switch on, ten minutes of black sreen before switch on, radio is bad i need to store the name of the radio and not the frequency, also the 3gconnect doesn't work, do you have any suggestion for me?

many thanks

davide
[MTCB Android Head Units Q&A] typos1:
Have you amde sure the device is named "OBD" ?

---------- Post added at 04:59 PM ---------- Previous post was at 04:57 PM ----------

Youre looking on the wrong thread, you dont ahve the unit in this thread, scrap what I said about the car service app and go to the WD8801 thread.
[MTCB Android Head Units Q&A] ktibor69:
I would like to modify the MTCRadio for 4.2.2.
[MTCB Android Head Units Q&A] wokro:
Hi everyone,

after playing around for some weeks I'm still in trouble with some really annoying things.

First is the issue with my GPS signal. There are days it is working great but then suddenly I get no Position I can see in the GPS status of Android and iGO a lot of satellite signals but very fast changing (one second there is 1 or 2 the other second 12 signals) but most of the time there is no fix (in iGO the signal bars keep red). First I thought it is a problem of the position of the antenna. I changed the position but only for some days it seems to work. I changed also from 4.2.2 to 4.4.2 but the same behaviour in both version.

Please let me know where you have positioned your antenna, mine is under the windscreen hidden in the plastic Tachometer housing. It should have free visibility to the sky.

Shall I go for a new active antenna?

Has anyone a similar problem? can it be the GPS receiver itself?

My second issue is iGO (basarsoft 9.6.29). It was really perfect (if GPS was there) up to the point I changed to KK. Then the screen started flickering everytime e.g. the voice comes up or if there is a bigger change in the map etc. Anyone else with that issue?

Today I installed (finally successful) TOMTOM 1.4 on internal SD. There the screen is steady without any flickering. So I guess it's my sys.txt of iGO or some other configuration mismatch. I prefer iGO over TT because of features, so could someone send me a working sys.txt sample?

thanks in advance

Wolfgang

P/S.: I'm currently on condou's first rooted 4.4 version for Klyde 800x480 and 2.08 MCU.mg.
[MTCB Android Head Units Q&A] ktibor69:
Firmware upgrade

A tried make update my HU from JY-2.08 to KGL 2.09. It wasn't success.

I copy KGL 2.09. update.img and JY mcu.img to the GPS card.

I did restart. The Android asked to the upgrade. I saw yes. Restart the HU, end the showed the booting screen "Android 4.2.2..." and I hear the radio. I have waited for 15 min. And I push the reset. I got message: Fail update.

The HU works now the defult Android firmware.

What did I do wrong?:confused:
[MTCB Android Head Units Q&A] manufine:
update MTCB-KGL4-V2.01 to MTCB-KGL4-V2.09

Hello.

I try to update my HUEIFEI.

I currently have the MCU: MTCB-KGL4-V2.01

h**p://servimg.com/view/18970961/18

h**p://servimg.com/view/18970961/19

I tried versions 2.02, 2.03 and 2.09. But I have to update errors.

h**p://servimg.com/view/18970961/20

h**ps://drive.google.com/folderview?id=0BxmzvLRI7-eNUGJhQ3g2SnpvT1E&usp=sharing&tid=0BxmzvLRI7-eNeVA2SWkwM1pLZ28#list

can you help me?
[MTCB Android Head Units Q&A] typos1:
Just flash the update again.
[MTCB Android Head Units Q&A] mrbubba999:
My GPS is attached to a metal piece behind the glovebox, so far so good. Installed in the same place in my previous car and never had an issue
[MTCB Android Head Units Q&A] wokro:
So it looks like my unit or the antenna is faulty. I hope it's the antenna :o To send back the Radio is not an option.

thanks for your reply.
[MTCB Android Head Units Q&A] markastor:
I have an obdlink lx, and torque can't find it @ KK.
[MTCB Android Head Units Q&A] MasterPrenium:
Could it be possible to set the brightness depending on the fact that the headlights are ON or OFF ?
[MTCB Android Head Units Q&A] dieterlumpen:
Edit - already answered.
[MTCB Android Head Units Q&A] Steve-Austin:
Hello,

It works!

I must use sd and not sd2.

Thanks for all!!!
[MTCB Android Head Units Q&A] kavo77:
I am running 4.4 however my BT is fine (or the same as it was on 4.2). I can only connect to my phone and my OBD sensor.
[MTCB Android Head Units Q&A] eu232:
Mtcb kld v2.02 bmw e91

I bought a product I guess it's a Klyde one for my BMW e91 model. When I try to use Wi-Fi it doesn't work and it goes off,I mention that it doesn't show mac adress nor IP. Can anyone help?
[MTCB Android Head Units Q&A] ktibor69:
I'was not in Root. But with root the update is success:D
[MTCB Android Head Units Q&A] typos1:
There is no need to take that attitude, I was only pointing something out, I did not "take your words out of context" at all, I simply replied to something you said - in the past youve suggested that you couldnt use the GPS because Tom Tom did not work and I ve pointed out a few times before that there are many other nav options apart from Tom Tom.

A simple "I am sorry I didnt mean it like that, I was using a translator" or something would have sufficed. I did not call you a liar.

And I did not in any way insinuate that I was "#1", if you cannot post without an attitude, then do not post at all.

---------- Post added at 08:40 PM ---------- Previous post was at 08:39 PM ----------

Please the thread, this is a known problem and it is being worked on.

---------- Post added at 08:43 PM ---------- Previous post was at 08:40 PM ----------

Really ? Because so far no one apart from webdude12 (who's unit had KK from the factory) can connect to anything other than a phone on 4.4.

You may be able to help solve the problem for everyone else. I take it youve tried naming the TPMS "OBD" ?

---------- Post added at 08:44 PM ---------- Previous post was at 08:43 PM ----------

:)
[MTCB Android Head Units Q&A] dannyw13:
you mean these mate?

http://www.ebay.co.uk/itm/PLUGZ2GO-...mponents_Supplies_ET&var=&hash=item339279e810
[MTCB Android Head Units Q&A] kavo77:
Well to be honest I actually haven't used or tried to use the obd since update, it does connect though and show the icon in the status bar.

I updated to 4.4 using the modified 4.4 image off this forum.