yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] typos1:
I agree about the hardware menu button, it would be useful, but there is a software menu button that appears in the notification bar at the top when you are in an app, this has the same functions as menu (touch for menu, hold for running apps), but does not appear all the time.

Have you checked that your radio is set for the right area in factory settings ? Have you also tried changing the radio chip type in factory settings ? (There is TEF6621 and TDA7706)

As for the DVB-T, see my posts on te previous page. I have the dual tuner version and the signal is very good, but the quality of the picture is bad and the edges of the menu are blurred, I think its connected via composite video. I agree there is a delay when using the tiuchscree buttons with the DVB-T. Plus the menu is very old ! What is FBAS ?

For the launcher you would have to hack the apk and modify the xml file.

I have the latest KLD software, if anyone is interested, I ll try and upload it later.

---------- Post added at 11:41 AM ---------- Previous post was at 11:40 AM ----------

It may be different on the 4.4 units.
[MTCB Android Head Units Q&A] parazit26:
hi!

could you please give me a link to the post on 4pda with the solution? I could try to do it, because i can speak russian as well :)
[MTCB Android Head Units Q&A] uncleg:
There are no link to the solution yet :) It's in progress now. Anyway try to track 4pda thread "Обсуждение головных устройств на платформе RK3066 (Android 4.2.2)"
[MTCB Android Head Units Q&A] hititup:
Hello i got this email. is you HU 4.1 or 4.2 how will u know? pls see link to youtube video...

Dear mitchel taylor,

We met you at the Global Sources Electronic Fair in HK on October, on the fair we displayed the newest Ownice C200 series - the first Genuine Android 4.4.2 Car Multimedia Navigation with CPU Cortex A9 Quad Core.

For the new series, we are making the pre-production sample lot now - Only 100pcs available for first 11 car models. Here we warmly welcome your sample order. Attached please find the quote for placing your order, thanks.

And we also have a video show on Youtube to tell customer how to check out the real android version is used on car multimedia navigation, because some customer said they got modified version from others.

Video Link: http://youtu.be/FsqM6kt2tis
[MTCB Android Head Units Q&A] typos1:
Great ! I m reading that thread with Google translate, but it is often very hard to work out what they mean because its not a good translation, I understand some things, but others dont make sense, it is very frustrating because they have done lots of exciting things to their units, they have used information from this thread quite a lot, including our pdf.

I d like to get some information exchange going between the 2 threads, I ve tried to join but google translate goes to russian on the sign up page.

---------- Post added at 12:27 PM ---------- Previous post was at 12:20 PM ----------

Thats the Ownice units, mentioned a few pages back, they look good, but they dont seem to be using an MCU though, wonder how they are working radio, SWC, amp etc ?
[MTCB Android Head Units Q&A] lemm007:
it will be here , but later...The author of this site is the man who invented this solution
[MTCB Android Head Units Q&A] uncleg:
Sure, I know it :)
[MTCB Android Head Units Q&A] wokro:
Hi,

many thanks for your reply and the tips. I'll follow them up. Checked the Factory settings and the radio is set to TDA 7706 which should be the right one according to the info of the seller.

The FBAS signal a german term for "Farb-Bild-Austast-Synchron-Signal" and means the same as composite, sorry I was used to it in german.

What is the latest KLD release? My seller said last week it is 2.02 as I have on my unit, do you have already a newer one. Do you know about what are the changes/news?
[MTCB Android Head Units Q&A] Martin_5224:
I have the same problem with my KGL. XposedMTC cannot reproduce saved frequencies after HU reloaded. I tried a lot of variants to reach the result, but without success. So I'm very interested in an alternative solution. It would be nice, if you are so kind to describe your stpes by more detailed way.
[MTCB Android Head Units Q&A] typos1:
Ah, right, so we both agree, its composite ! Maybe there is a way to attach via HDMI ? Its just finding it.

No updates list the changes, you have to install it and see I m afraid, my unit is dismantled at the moment so I cannot test it, but I think it will be version 2.08. Its dated 30/10/2014.
[MTCB Android Head Units Q&A] Pavezer:
I saw this original thread some time ago and it was done already. I can't find the original thread anymore... :D I used Google translator and, as said, it's was really hard to understand the "translation" :). There were clear pictures of the process whatsoever.

Anyway, there is a design flaw in the audio circuit; high pass and low pass filter circuit component values are badly chosen and changing these values it makes the treble and bass response better (it makes sense). Anyway, SMD components are pita to change if you are not experienced with them, but it's possible. I'm intrigued to try this whenever there's more info - I have done some things with smd's before.
[MTCB Android Head Units Q&A] agentdr8:
Should be able to do this. When I have some free time, I'm going to start working on adding hardware key remapping.

Have either of you tried wiping data for XposedMTC and then reset your preferences? I know at one point in time, there was an issue with a release that changed the file permission on the prefs file, and it made it so the radio presets weren't getting saved. Also, can you try enabling debug and then send/post the error.log when the presets fail to restore?

---------- Post added at 10:12 AM ---------- Previous post was at 10:04 AM ----------

Flashed the 2.08 GS MCU (via recovery) that [MENTION=6124617]marco.lav[/MENTION] sent me. Works fine, but I haven't noticed any difference, other than the version change in the About screen.

I've uploaded it to the FTP repository: http://huifei.fs-fileserver.de/content/firmware/GS-4.2.2-v2.08-MCU_Only/
[MTCB Android Head Units Q&A] dnts:
Before I dive deep into any explanations - you need to know this requires knowledge in modifying system files, understanding some coding (at least) and working with HEX numbers. If you think you are up to it, let me know and I will write down some guide.

Nir
[MTCB Android Head Units Q&A] Martin_5224:
Hello!

Yes, of course. I even reinstalled XposedMTC (1.28) several times. Each time I activated it in Xposed Framework (2.6.1), reloaded HU, after that switched the option ('set users frequencies) on, reloaded HU again, made learning of frequencies (I set my frequencies in recevier after reloading), got message 'frequencies saved', but after next reloading HU I had no mu frequencies in recivier. I don't know where Xposed MTC saves the frequencies in, but I checked permissions in the file \data\data\com.microntek.radio\shared\

com.microntek.radio_preferences.xml, they were rw-r-r (644) (I'm not sure, maybe the file is created by recevier, not XposedMTC), I also switched debugging option in XposedMTC, and looked at log in Xposed Installer, though I cannot understand how to analyse it. Tomorrow I'll copy the information and post it.
[MTCB Android Head Units Q&A] ESTIMULO:
Yes! It is, and throught this menu i just activated canbus and now i have 4 buttons working in my wheel (volume up/down, mute and mode) but it can not learn more.

Thanks!

I am very happy with this model, the sound is good and the screen is so good also.
[MTCB Android Head Units Q&A] agentdr8:
The radio presets should get saved to /data/data/com.dr8.xposedmtc/shared_prefs/com.dr8.xposedmtc_preferences.xml if it's working right.
[MTCB Android Head Units Q&A] Martin_5224:
Thank you!

I'll check /data/data/com.dr8.xposedmtc/shared_prefs/com.dr8.xposedmtc_preferences.xml tomorrow and post the result together with the log file content.
[MTCB Android Head Units Q&A] typos1:
What unit have you got ? and what unit did you see it done to on 4pda.ru ? Wondering whether its just for KGLs ?

I saw something on there that mentioned also connecting Android directly to the amp IC for dirct control of it.

Can you pm me the details for uploading ? - I ll upload the KLD update that I got today.

---------- Post added at 08:23 PM ---------- Previous post was at 08:20 PM ----------

I still think it would be much easier than doing all this to install titanium backup, back everything up and then try a later version, this problem was deffo sorted in later versions by the Chinese.
[MTCB Android Head Units Q&A] michaelke94:
Boot Loop

Hello Guys,

I have this Android 4.1.1 VW Car DVD GPS Navifor VOLKSWAGEN

aliexpress.com/snapshot/6072993258.html

But now it doesn't start up anymore, its stuck in the boot loop.

I currently have the following files:

-KGL(140514) with update.img and mcu.img

-Android 4.1-2.7.29 with 8e3513e2-ea4a-11e2-8a0f-000c29ba27c0 AND 8d8d1b1a-ea4a-11e2-a661-000c29ba27c0

how can I fix this?

I suppose I can just fix it by the new firmware?

What are the Key combinations for installing the firmware/MCU (like Power button+Reset button,...)

Thanks!

~Michael
[MTCB Android Head Units Q&A] agentdr8:
Send a PM to [MENTION=2067704]dark alex[/MENTION] for FTP access.

Now that you mention it, I can't be certain I ever tried the module functionality on older MTCRadio versions. I think my testing was done against KGL 2.03. Are you saying that even newer versions of the Radio don't suffer from the preset reset issue, even after a hard reset while running?
[MTCB Android Head Units Q&A] spankaroo:
64GB SD Card not working

I'm unable to get a new 64GB SD working in my HU. KLD 2.02 Android 4.2.2.

I tried everything I've seen in this thread. Formatted to ExFAT, attempted reformatting in HU, no joy. It just says card is corrupted. When I put the SD in my 4.4.2 Tablet, it formats fine. After that format, back to the HU and it says it is corrupted.

Any hints how I can remove limitations or add Exfat support if my unit doesn't have it?
[MTCB Android Head Units Q&A] typos1:
OK, just thought it would be quicker to ask you.

I dont know, I ve just been following the thread since very early on and pretty certain radio stations were not stored at first but that this was fixed in a later update.

I think the modded radio apk at the beginning of the thread, that also has the station name and frequency swapped so that the station name is larger, has been modified to store stations as well, so in theory it can be done just by just modding the apk and it should work.

But if it was me I would have the most up to date version and only start downgrading to lower versions if I had problems. The poster has just read about some problems that older have had, he has not experienced them, he is just afraid that he may have them, I ve told him that there have been no reports of them lately.
[MTCB Android Head Units Q&A] agentdr8:
I don't believe the headunits can read ExFAT partitions. Try formatting to FAT32 using a utility such as this one here.
[MTCB Android Head Units Q&A] typos1:
Are you sure its a KGL ? I d guess it was an AN21-U, KGLs atarted with Androdi 4.2 AFAIK.

Try the AN21-U thread on XDA.

---------- Post added at 09:59 PM ---------- Previous post was at 09:54 PM ----------

You need to format it in FAT32, NOT exFAT, that is your problem.

Microsh*t wants to promote their newer exFAT files system so they limit how big you can format things in FAT32 format, no bigger than 32GB I think, I use Linux so I can format something as big as I like in FAT32.

So any formatting software that comes with Windows cannot format a 64Gb card in FAT32, you need to use different software to do that on Windows.
[MTCB Android Head Units Q&A] michaelke94:
I already Posted in that thread, but do you know a possible solution?

Thanks!

~Michael
[MTCB Android Head Units Q&A] Martin_5224:
Hello, Nir!

I suppose, your alternative way is unpack MTCRadio.apk, and to modify modules 'array-data' in 'RadioService.smali' fail for replacing preset frequencies with user ones, in principle, I know how to do the task, but had a hope to easier way. Thank you!
[MTCB Android Head Units Q&A] dnts:
Yup. That's what I did. 15 minutes of work and frustration is gone.. Don't forget to sign the package after you're done..

That was my 1st time doing this APK neurosurgery but it was quite easy and opens up the way for many other modifications. Maybe I can change the behavior of the front panel buttons - need to find which of the APKs handles them.
[MTCB Android Head Units Q&A] typos1:
Or he could save himself time and just update to the latest version (bangs head against wall) :eek:
[MTCB Android Head Units Q&A] Martin_5224:
I'm agree, it opens interesting possibilites for modyfying HU, but I can say, it takes much more, than 15 minutes for me, and sometimes I have a positive result, but more often - not. Maybe it depends on tools in use. I apply apktool, jdk-platform and Android SDK, all of them are not very comfortable to use, it would be nice to find applications with more friendly interface...
[MTCB Android Head Units Q&A] mrbubba999:
Just installed my new android unit, but for some reason the touch screen won't respond to anything.

I've emailed the seller, but not heard anything yet.

Any ideas? Tried the reset button on the front, powered off and on and the same

Uploaded a YouTube video of it

Android head unit faulty touch screen: http://youtu.be/SdSc58qcHlA
[MTCB Android Head Units Q&A] agentdr8:
Probably a loose ribbon cable. It would require taking the front panel off and verifying everything is connected properly.
[MTCB Android Head Units Q&A] mrbubba999:
I'll have to wait for them to come back to me then, don't want to void any warranty!
[MTCB Android Head Units Q&A] ArbitraryNoise:
Ownice C200 forum

Take a look at their own forum: http://xdaforums.com/android/general/winlink-ownice-android-head-unit-4-4-2-t2899282

They seem to be moving along a great pace. They have the source code and are working with it. On the other hand, the basic functions, like stereo balance and the front to back fader were rudimentary when I last looked.

---------- Post added at 08:36 PM ---------- Previous post was at 08:25 PM ----------

Well, all the interesting happenings I mentioned are in the http://xdaforums.com/android/general/4-4-2-kitkat-head-unit-newsmy-carpad-t2865525 Newsmy carpad forum. They don't have a DVD player, or an underlying MCU. The Android box is (or is like) a TV media player and can be taken out of the car and played with in conjunction with a PC.

The Ownice unit does have an MCU and isn't out yet, hence the dead forum. Expect more info when the HUs may ship in December.
[MTCB Android Head Units Q&A] Pavezer:
I have Huifei KGL-7683G. I saw it somewhere in this thread (already mentioned RK3066 Platform thread):

hddp://4pda.ru/forum/index.php?showtopic=557670 (change d's from the beginning)

Thread is really hard to follow with the translations indeed. But there was someone who said that he has figured out the lo and hi pass components and changed/disabled them. There was also a link to youtube video, where the new sound was introduced. This lo/hi pass filtering thing is really basic/typical thing in audio circuits. Person who did this told that (as far as I understood) he had the schematics and was able to restrict the audio filtering block from the schematic and locate the components from the motherboard. Then there were pictures of the process (pictures of the locations of the components, new values and process etc + the link to youtube video). I just can't find them anymore and I don't know what was the unit.

I haven't really read and studied this enough to say that if the motherboards are identical within this part between the models or is this only for KLG's. Probably there are differencies between pcb layout...

And there are ideas of connecting Android directly to the amp IC for direct control of it. It's possible, not sure if it has been done already. It gives you possibility to control EQ frequencies better, and that way the whole sound image is better controlled, i think. ?
[MTCB Android Head Units Q&A] djwyldeone:
Bluetooth Settings Crash

I updated my GS to 2.02 and now when I go into the Bluetooth settings and try to change the Device Name or Code Settings crashes. Anyone know how to fix this? Any help would be greatly appreciated!

Troy
[MTCB Android Head Units Q&A] manicuspanicus:
I have a weird situation....... with the bluetooth and my phone. Im using a samsung galaxy s4 and i had it paired with the hui fei.

Everything was going well. This one time yesterday i didnt have my bt on and i decided to connect after the unit had booted. From that moment i have problems . Everytime my unit boots it connects to my phone but like in a call although im not in one. i cannot push back or go to the home screen and the only thing that i can do is turn off the bluetooth in my phone. I tried deleting the hui fei and pair it again, tried to find something in the bluetooth menu of the hui fei but nothing so far. Anyone knows something or experienced something like that? any help would be appreciated.... thanks.
[MTCB Android Head Units Q&A] mrbubba999:
Got the touch screen working and here is a screenshot of the unit details, anyone shed any light on the device?
[MTCB Android Head Units Q&A] Martin_5224:
Hello!

Today I've checked the file com.dr8.xposedmtc_preferences.xml, it's OK, all users frequencies are there. It means XposedMTC saves settings well. I've also copied error.log file. It contains several identical blocks, I'm placing one of them here:

11.11.2014 11:34:17 UTC

Loading Xposed v54 (for Zygote)...

Running ROM 'rk30sdk-eng 4.2.2 JDQ39 root.20140427.122405 test-keys' with fingerprint 'rk30sdk-eng4.2.2 20140514.19:44:15'

Loading modules from /data/app/de.robv.android.xposed.mods.appsettings-1.apk

Loading class de.robv.android.xposed.mods.appsettings.XposedMod

Loading modules from /data/app/com.dr8.xposedmtc-1.apk

Loading class com.dr8.xposedmtc.MTC

java.lang.NoSuchMethodError: com.microntek.radio.RadioService#resetRadioPreference()#exact

at de.robv.android.xposed.XposedHelpers.findMethodExact(XposedHelpers.java:179)

at de.robv.android.xposed.XposedHelpers.findAndHookMethod(XposedHelpers.java:129)

at de.robv.android.xposed.XposedHelpers.findAndHookMethod(XposedHelpers.java:136)

at com.dr8.xposedmtc.MTC.handleLoadPackage(MTC.java:955)

at de.robv.android.xposed.IXposedHookLoadPackage$Wrapper.handleLoadPackage(IXposedHookLoadPackage.java:20)

at de.robv.android.xposed.callbacks.XC_LoadPackage.call(XC_LoadPackage.java:34)

at de.robv.android.xposed.callbacks.XCallback.callAll(XCallback.java:70)

at de.robv.android.xposed.XposedBridge$1.beforeHookedMethod(XposedBridge.java:208)

at de.robv.android.xposed.XposedBridge.handleHookedMethod(XposedBridge.java:611)

at android.app.ActivityThread.handleBindApplication(Native Method)

at android.app.ActivityThread.access$1300(ActivityThread.java:141)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1294)

at android.os.Handler.dispatchMessage(Handler.java:99)

at android.os.Looper.loop(Looper.java:137)

at android.app.ActivityThread.main(ActivityThread.java:5041)

at java.lang.reflect.Method.invokeNative(Native Method)

at java.lang.reflect.Method.invoke(Method.java:511)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)

at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)

at dalvik.system.NativeStart.main(Native Method)

[2014-11-11 14:35:02] XMTC: hooked radioservice

The whole of file is rather big, I don't know how to place it here, I could mail it (together with com.microntek.radio_preferences.xml and com.dr8.xposedmtc_preferences.xml) if necessary

It seems to me, 1.77 version has no fundamental differences from 2.03 from point of view of Radio recevier functioning.
[MTCB Android Head Units Q&A] azur89:
Klyde trouble....

Hi guys, I have a Klyde that only loads up to the point where the Android guy spins on the screen. And its been spinning like that for 2 weeks! I tried to put the firmware on the root of gps card to get back in order, but it does not update or anything. It only shows the 4.2.2 multimedia, then it goes to Android.....and nothing more. Nothing was done before on in. Nothing installed, nothing erased. I stoped the car one day, was fine, I start the car next day....and it wont boot up! Any help? Thank you!
[MTCB Android Head Units Q&A] agentdr8:
This is why the preset restoring isn't working. It can't find this method within your MTCRadio.apk. It's probably something that was added to a later version of the Radio, since I did testing against KGL 2.03.

If you don't want to flash a whole system update, you could try replacing the MTCRadio.apk in /system/app with a newer one.

---------- Post added at 10:39 AM ---------- Previous post was at 10:38 AM ----------

Try getting into recovery, and either do a factory reset from there, or flash an update.img from sdcard. Instructions are on the 1st post.
[MTCB Android Head Units Q&A] Martin_5224:
Hello! Thank you so much for your information. I'll try to replace MTCRadio.apk (1.77) with MTCRadio.apk (2.03), I'm not sure it will work, then I'll try the application from 1.86 or 1.92, something like that. If it doesn't work, I'll think about flashing...
[MTCB Android Head Units Q&A] azur89:
Easy to say...hard to do...I tried every combination...There is no reset button (not even the hard reset) , I tried de 2.03 version on the gps card..not working.....for 2 weeks I tried everything, including asking for help from my seller....no reply there......Thank anyway//// Just to make myself clear, I can`t go in recovery.
[MTCB Android Head Units Q&A] agentdr8:
Which model do you have? They should all have reset buttons; some are hidden behind covers or the removable faceplates.
[MTCB Android Head Units Q&A] azur89:
I had it out, I had it open...I looked all over....I will try again tomorrow....I dont have 10 post yet, so aliexpress.com/item/Wholesale-Dual-Core-Android-4-2-Capacitive-Touch-Screen-Special-Car-DVD-Player-For-Honda-CRV/1878305786.html if it works (the link).
[MTCB Android Head Units Q&A] agentdr8:
Hmm, you're right; don't see an obvious way to reset the unit. There's probably a reset pad on the front faceplate pcb though, even if it is covered by the plastic fascia.
[MTCB Android Head Units Q&A] Martin_5224:
The reason why XposedMTC cannot work the 1.77 version with, is clear. I unpacked MTCRadio.apk of 1.77 and 2.03 versions. In 1.77 the information about frequencies is in RadioActivity.smali, but in 2.03 - in RadioService.smali. But the structure of arrays (where frequencies are written) is the same. Is it possible to change the specified path in XposedMTC or to make an alternative path?
[MTCB Android Head Units Q&A] agentdr8:
Yep. I'll see if there's a manifest version difference, and adjust the method hook accordingly.
[MTCB Android Head Units Q&A] Martin_5224:
Wow, thank yu in advance! It would be wonderful!

Meanwhile, I'm trying to modify MTCRadio.apk to replace the default frequencies with my ones. Maybe you know which arrays are responsible FM1, FM2,FM3 groups for, there are a lot of arrays there, part of them should be responsible for various countries frequency ranges, and some of them - for FM(1,2,3). In default regime frequencies are the same in groups, so it's difficult to understand what and where....