yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] xarlis:
Hi guys, I want to buy a android gps for my mercedes w211 e class

I have seen these two models:

RK 3066 dual core Chip

ttp://es.aliexpress.com/item/Capacitive-Android-4-4-Pixels-1024-600-Car-Head-Unit-DVD-For-Mercedes-Benz-E-G/32246237065.html

RK 3188 cuadcore Chip

ttp://es.aliexpress.com/item/4-Quad-Core-1-6GHz-CPU-Android-4-4-Car-DVD-Player-Radio-GPS-for-Mercedes/32329043282.html

1-What do you recommend?

2-root can be made?

3-They are compatible with the different rom of this post xda ?

excuse my English

thanks
[MTCB Android Head Units Q&A] elkabong007:
Right price will be between $30-$40 see this device for comparison manufactured with RK3188 2 gb ram 8gb rom with Dual WiFi 802.11/b/g/n 150Mbps priced at $39 but it has wifi chipset that is not needed in our SOM http://www.aliexpress.com/item/MK809-IV-Quad-Core-TV-Box-Stick-Media-Player-Google-Android-4-2-2-RK3188-2GB/1687357882.html
[MTCB Android Head Units Q&A] dark alex:
1 -> quadcore when available is faster so recommended

2 -> No. 4.4-roms are not rootable as stated about 50 billion times yet - you can only install a prerooted rom

3 -> Seems like it is one of these but to be sure ask your seller for a screenshot of the About Tablet screen and compare MCU-Version-Code (JY, KLD, KGL, ES etc)
[MTCB Android Head Units Q&A] tt40:
I would try different MCU. I had some button problems with the latest MCU and hat to go back a few releases.
[MTCB Android Head Units Q&A] Johi10:
Hi,

How Can I create an update.img file from my working Image?

Thanks alot.
[MTCB Android Head Units Q&A] MayfairDROID:
You can not. You need to download the factory image from the manufacture, or use the rooted images located in the file repository on the first page.
[MTCB Android Head Units Q&A] devin2:
hi

I made a big mistake:

my MCU was a KYD and I update with a KGL4 MCU ... NO GOOD and I can't to flash may KYD MCU beacause when I reboot on Rcovery ( with a quick reboot software ) I can select "update MCU or update.img" with my power/vol button but I cant' select this option with the power button beacause it is not recognised

I have'nt a micro-usb on my HU then I cant' connect to my PC

A Idea for help me ?

thx
[MTCB Android Head Units Q&A] Juanli:
it does not stop the engine by removing the key

I passed from the first day with the new radio. I turn the key to stop the engine, but not to, then when I open a door, you can change something to stop the engine with the key?

I have to open the door and remove the key to stop the engine in that order, otherwise it is something connected out there and the next day gives engine failure
[MTCB Android Head Units Q&A] Juanli:
I'm sorry, have I start the engine, turn the key and pull it out of contact, the engine should have gone out, I have turned on the radio and it works canbus because the steering wheel controls function, I open the door and the engine shuts down and the radio
[MTCB Android Head Units Q&A] i.draskovic:
Try to use USB keyboard or wireless keyboard with usb receiver. Than you just have to press enter :)
[MTCB Android Head Units Q&A] MasterPrenium:
Hello guys,

It's a long time I've logged in ... I have a lot of new pages to read but I got one quick question.

One of my customer is having wifi issue with his KGL-8405. It's running MCU 2.47 & Coudu last KGL version.

I know there were issue with wifi on old software releases but it seems on his unit the issue remains. I cannot reproduce this problem on any of my tests units (I have 5).

Does anyone know how to fix it ? Is it an hardware issue ?

Thanks
[MTCB Android Head Units Q&A] i.draskovic:
Please Help if you can :(

My device does not boot anymore. When I turn it on it is automatically in recovery mode because it can not mount external sd. Message is shown in attached picture "E:failed to mount /mnt/external_sd (No such device)".

I have try to update with correct MCU and to flash device with another ROM but problem is the same.

Power taster does not work. Volume up and down works. When I use usb keyboard I can select options and when I press Reboot Now, everything works ok and all what I have installed on device remains.

Question is: How can I set boot loader that runs normally without to enter in recovery mode, because I have to use usb keyboard to select Reboot Now?

If there's any help, please send me step by step, because I'm new with this.
[MTCB Android Head Units Q&A] MayfairDROID:
I am not an expert, but which sd slot did you put the MCU image in? You need to put the image on the SD card and then insert it into the GPS slot. it will not work in the regular SD card slot. Have you tried this? It looks to me that it is not seeing the SDcard in the GPS slot. Shane.
[MTCB Android Head Units Q&A] i.draskovic:
I have insert card in sd card slot, and I can update MCU and Firmware. It is not problem. Only problem that i have is to skip always to entering in recovery mode. When system is on, i can see system partition and nand drive (internal flash). That means that all works ok. But afrer restart I'm in recovery mode.
[MTCB Android Head Units Q&A] djtriso:
Rk3066 replace to rk3188

anyone know if you can replace the RK3066 dual core by rk3188 quadcore

link:

http://es.aliexpress.com/item/Optio...-CPU-RK3188-1-6GHz-Cortex-A9/32323855732.html

My car radio is kgl rockchip rk3066 dualcore and I want to replace it to rk3188 quad core
[MTCB Android Head Units Q&A] MayfairDROID:
I would do a search before asking this question....There are bout 200 posts on this exact topic. I'll give you a hint...that item posted will not work, but others will.
[MTCB Android Head Units Q&A] obekende:
Hi

Humm.. I think is only the chip not the board, for the price..... :eek:
[MTCB Android Head Units Q&A] djtriso:
YES RK3188 Quad Core
[MTCB Android Head Units Q&A] yeah88:
I have used the v4.3 image for 800x480 KLD i really liked it..however i faced a huge issue, i couldnt install any apk from external micro sd (specifically the iGO app of the GPS card) with the error app not installed. After some digging i found out that it might be something with the permissions. Now i am back to an older version of KGL. Any help will be appreciated cz i liked this rom a lot, Thank you for the great work.
[MTCB Android Head Units Q&A] _andreas_:
Hi, I have the same problem with my KLD device and MCU 2.51.

( KLD Device / mcu + Tuner TDA7706)

The last working MCU for me was 2.49. Here I had to select the correct tuner type in the factory settings and the only problem is the imprecise channel scan.

I just read that there is the V2.55 the following link, I will test this soon.

http://xdaforums.com/showpost.php?p=60976929&postcount=13120
[MTCB Android Head Units Q&A] Rog_82:
OK, to keep you updated with my progress... and yes, I am still having problems.

Updated the MCU to latest and this got the audio working, radio to tune etc etc.

BUT...

CD is still in the DVD drive, it will play, but I cannot eject.

Rolled back the MCU software, and later than 1.99 works with 4.4.4, 1.99 & earlier work with 4.2.2. Went all the way back to the 'original' KGL1 1.72 and 4.2.2 but still unable to eject the CD.

My facia buttons appear to work as follows -

FM = Home

BND = Radio

1 = Radio preset 1 (when in radio)

2 = Radio preset 2 (when in radio)

3 = Radio preset 3 (when in radio)

4 = Radio preset 4 (when in radio)

5 = Radio preset 5 (when in radio)

6 = Radio preset 6 (when in radio)

SRC = Nothing

NAV = Navigation

>|| = Play DVD

_^_ (EJECT) = Nothing or enter / exit DVD

MUT = Mute

AUX = AUX

<< = Back a track or radio scan backwards

>> = Forward a track or radio scan forwards

TV = TV

DVD = DVD mode

PHONE + = Bluetooth menu / answer call

PHONE - = Reject call

Pressing the volume button originally would send me to the equaliser page. Now it doesn't, but I can't remember at time of writing where it does send me (sorry!)

I have tried all the settings I can find, including the different keymaps without success.

Anyone any ideas?

I'm sorry it is several days between posts, but working long hours is it often hard to find the time to try things out. Please quote me in replies to help me see them as this thread does grow insanely fast!
[MTCB Android Head Units Q&A] edit:
Guys, I have a strange problem.

I have the prerooted KYD 4.4.4 rom that has built in the "Microntek HeadUnit Service" that I can't uninstall (it's not visible on installed programs and I did not manage with titanium backup also).

When I have Google Music playing, Waze running, and also latest version of the Viper4Android pressing the sound... at some point the volume goes nuts... it goes to -20 then -4 then +12.... at some point it changes my song on his own... has a mind of his own....

I suspect the Microntek HeadUnit Service is to blame but I can't upgrade it (it's version 2.02 and the latest is 2.15)

Any advice how to remove the Microntek HeadUnit Service and it;s service is welcome.... or any other sugestion is welcome.

Thank you!
[MTCB Android Head Units Q&A] pants001:
It may not be one of your installed apps but can you go into settings/applications then select "All apps" tab and "Disable" from there?
[MTCB Android Head Units Q&A] edit:
Tried that, it does not work, you can disable the app but not the service and with just the app disabled you still can't upgrade... and I need it... uninstalling is the only way... but I don't know how to do it manually.... one missed file and I am in big trouble... I will not be able to install it.

I am working for over 2 days to customize the unit (set everything up nicely).... I don't want to reflash and start over.... noooooo!

L.E. - this is the error i get when i try to upgrade : "package file was not signed correctly. Uninstall the previous copy of the app and try again"
[MTCB Android Head Units Q&A] Alphas:
You may have brick it, look for the reset button, press and pray hold it till it enter recovery mode. :rolleyes:
[MTCB Android Head Units Q&A] pants001:
Did you try upgrading through Playstore or APK file?

Its currently called "RK3066 HeadUnit" on playstore, but you can get the APK files from this thread
[MTCB Android Head Units Q&A] Brendo:
Maybe the button or mechanism is broken?

---------- Post added at 01:34 PM ---------- Previous post was at 01:31 PM ----------

If you've disabled the option in the app, then regardless of if service is running, it won't make a difference...unless that's the version that kept resetting the settings when you open the app? (or was that the xposed one?)

Have you tried one of the apps from the playstore that stops services?
[MTCB Android Head Units Q&A] Juanli:
me and for work me, Now if I can have other problems like that switch off all to remove the ignition key
[MTCB Android Head Units Q&A] devin2:
I can change select on recovery meny with the power button BUT if I HOLD Power Button down = that do nothing like the power button is not recognised...
[MTCB Android Head Units Q&A] edit:
Tried through the Playstore... I will look for the APK from this thread and try it out... hope it works... I will post the results later so anyone will know what to do.... if it works that is...

---------- Post added at 05:22 AM ---------- Previous post was at 05:19 AM ----------

Thank you, I will try and see how it goes... iF it works I also need some info on how to remove/delete (the app and the service) in order to install an update.... arrrghhh
[MTCB Android Head Units Q&A] jugi:
Hello!

I upgraded this player to KGL-2.53 MCU image. from v2.09

http://www.erisinwholesale.com/spec...droid-42-car-dvd-gps-corolla-ex-rav4-332.html

and latest malaysk rom. 4.4 series

I noticed that the qualizer had changed, and i feel that the sound quality is not so good anymore / it is different, is this just some imagination

Any tips / comments?

Best, Jukka
[MTCB Android Head Units Q&A] abezze:
Yes I'm using the default launcher and the volume display override is enabled.

Here is my logcat, I got an exception at row 1256

FATAL EXCEPTION: main

Process: com.android.launcher

thanks a lot for your support, I'm a developer but new to android... can't understand whatever is the IntentReceiver

but looks like the exception is due to the zygote - XposedBridge
[MTCB Android Head Units Q&A] devin2:
Hi

It's ok with a USB Keyboard

thx

I restore the KYD MCU file

:good:
[MTCB Android Head Units Q&A] edit:
Thank you for the feedback.

The unit is gonna be installed later the afternoon so it will be a bit hard to use a terminal (other then the fact that I am no good with it or linux... I don't remember If I ever used one with android)

I have rootexplorer app installed and I will try to use it to delete the apk you mentioned. Deleting that 1 apk file should be enough or do I have to delete/disable the service separately (or other files of there are more)

Just want to make sure that there will be no files left behind that will prevent me from installing the updated version of the app.

The app is extremely useful for me and I was hoping that the current bug is long gone in the latest version.

I will try the volume control if I will fail miserably at removing the app but I was happy that the app has the speed volume control and I was planning to use it.

L.E. - It's strange that Titanium Backup failed to uninstall/delete the app... it used to be perfect for this kind of issue
[MTCB Android Head Units Q&A] typos1:
Indeed, that is one of the first things that came to mind, but DSA disagrees and he wont say what other reason he thinks they are doing it for. The approx $80 inc delivery that was paid by DSA seems to have been a wholesale price, the wholesale price of the complete headunit is about half of the price that re-sellers sell them for - mark up is approx 100% - using this same logic for the SoMs means that they would retail at $160 or thereabouts, about the same as Klyde are now charging, its strange that the factory is now charging the retail price. If it isnt greed and the "low stock" excuse is not the real reason, maybe its because they want to put people off upgrading as they would prefer to sell complete units ? I ve asked Klye but I ve got no answer, I ve also asked them about the RK3188 and 1024x600 problem but I ve got no answer about that either.

What sort of temps are you talking about ?

Yes, thats the way the latest MCU updates work I think I read that Malaysk has changed this in his ROM.

Yes, works fine.

Its linked to on the first page as Dark Alex says, everytime DSA roots an update I upload it to the fileserver. coudu isnt around much anyore, DSA's ROMare similar to cu=oudu's - he roots them and increases the app aprtition to 3Gb, plus a few minor mods. Malaysk makes a full custom ROM, links are in his signature.

You cant say that for certain - those TV sticks are very very common, much more common than these car stereos, it may be that the whole SoM for these units costs more to make because its more specialist.

From recovery you can update from either SD slot.
[MTCB Android Head Units Q&A] antvic:
Just two question. I have a unit with 800 x 480 resolution. And the question is: the resolution is an invariable feature of screen?

I mean, with this resolution I can not never update to another superior. Or should I change the display to update.

I don't know if I understood?

================================================================================================

Another question: How can I install ClockWorkRecovery to make a backup of my computer before upgrading to KitKat.

Where possible, this backup only can be the Android part, I guess. I don't think that it can be done from the MCU asked this because it is what I have done in all my Smartphone since I know Android and wonder in this forum talk little of it.

That would avoid the problems many people who updated their computers and then have a problem with. With this method they could return to retrieve a good copy. This has happened to me sometimes with my smartphones. Thanks again

Thanks to all who do this forum
[MTCB Android Head Units Q&A] echudoba:
DSA if I want to add xmtc service also I would replace "com.urbandroid.lux/.TwilightService" with my guess of "com.dr8.xposedmtc/.xmtc" .

This service is not starting out of sleep and I am not sure the name of it.

Now running Klyde rk3188 800x480 8Gb DSA pre-root rk3188.150522 mcu 2.55
[MTCB Android Head Units Q&A] matekhr:
I have a very strange problem with my unit. It's RK3066 Klyde, 800x480.

I first noticed my radio stations are erased, but HU can't find any stations.

Furthermore, wi-fi is off, and can't be turned on, and bluetooth can't find my phone, so both are not working.

USB stick connected to the back of HU is not recognized.

I can't enter recovery mode any more, it starts a regular reboot after three beeps are heard.

After pressing reset button, series of continuous beeps is heard, as long as I press my hardwired power button. Then reboot starts again.

Android part seems to work OK.

I put an update.img and mcu.img files to my gps card (this one works!), to start the update from android, update was OK (as always), but ends with continuous beeps.

Any help is very appreciated.
[MTCB Android Head Units Q&A] kumarai:
MCU KLD 2.55

The Management Board of instal sound processor registers 02,41,47,75

02-0x00

41-0x01

47-0x11

75-0x05

Remember! Everything you do, you do at your own risk!

changes concern the high, low and the depth of sound. sub without cutoff, clean mono output.

Maestro - darkleo

Tester - kumarai

product is provided as is. Please do not spam the issues will be on when the other models. No stamping. only accepts comments and suggestions.
[MTCB Android Head Units Q&A] typos1:
So, about 30deg C ? Thats not good, has it happened again ?

Retailers are simply not going to sell at the wholesale cost and only make money on shipping, with due respect this is a ridiculous idea, there would be masses of companies going bust and mass unemployment ! This is not the way the capitalist world works, the whole point of a retailer is to make money on the factory price. On sites like ebay and Amazon, making money from shipping costs is generally frowned upon, especially by buyers. You still did not answer my question, you would make an excellent politician - there are known for saying a lot, but not actually answering the question ! :) Personally, I think they are trying to put people off buying new SoMs.

Its perfectly understandable though, if the wholesale price has been discussed and paid on the forum that people are unhappy to see the retail price is much more.

In other news, I ve found this app : https://play.google.com/store/apps/details?id=com.sylkat.AParted&hl=en_GB

It says it can add swap space, I would assume that Android has swap space already, adding it may help improve the RAM performance if it has none, clearly it wont be as good as having 2Gb of RAM, but its better than nothing.

On the 2Gb RAM question, someone a few weeks back posted a link to Roadsense on Aliexpress that upgraded to 16Gb flash and 2Gb RAM, I ve checked this out and Raodsense sell the Ownice unit as well, this upgrade is for that, NOT HuiFei type units. So it seems all manufacturers of HuiFei type units have not had the foresight to think people would want 2Gb RAM as it doesnt appear to be available on any HuiFei type unit from anywhere. I have not tried it out yet and I guess it will have to work on the flash/imternal SD as an external SD wcard wont be fast enough AFAIK.

Has anyone used an SSD on with their unit ? Due to the music cutting in and out problem with my 128Gb usb stick and the price of 128Gb SD cards I m thinking of trying an SSD, I can get one for less than half the price of a (real) 128Gb SD card. Theyre 3.3V wonder if I d get away with one USB connection instead of 2 as I do with my external HDD ?

TBH, the 800x480 resolution makes for a perfectly usable screen, the only problem I have with it is that I prefer the 2 panel settings list on the higer res screen (though I think this could be changed on the 800x480 one) and that the Torque dial widgets do not show up on the lower res screen with the standard launcher.

For such a low upgrade cost, its worth upgrading, at least at purchase time, no one has upgraded their screen after market AFAIK, although Im sure its possible.

Back up is not necessary, original firmware is freely available. Its also impossible - for backup you need root, to root you need a pre-rooted ROM. The MCU has nothing to do with Android, or backing up Android.

---------- Post added at 03:36 PM ---------- Previous post was at 03:34 PM ----------

So you propose a modification to improve the sound quality ?
[MTCB Android Head Units Q&A] ktibor69:
I 'm using the old Coudu's firmware. I would like to upgrade to brandnew dualcore JY (800x480) rooted firmware. Where can I find the DSA's rooted firmware, that similar to Coudu's firmware?

Thanks Coudu for the great jobs!
[MTCB Android Head Units Q&A] typos1:
On the fileserver linked to on the first page.
[MTCB Android Head Units Q&A] -=Gerner=-:
Hi Malaysk !

How are You? Does Your new HU is in transit ? :)

My question:

Could You implement Your all styling modification (like how to looks .... ++++ Upgraded Settings-GPS-GPS info. He became more informative / ++++ New Equalizer /etc....) into Your latest RK3188 Firmware ????

Another info for the future development....

Today I received my new OBDII WiFi modules (3pieces). WORKS FINE with all of my HUs (with your's latest RK3188 firmware) !!!!!! And also works well with my phone (android v4.2.2) .... Earier I did wrote, that all of my OBDII v2.1 BT modules, does not works well with my HUs. So, I think only v1.5 BT modules works, explain as other users said...

For All :

Does someone use a TPMS Bluetooth kit ???? It works well? What kind of Brand & type ???
[MTCB Android Head Units Q&A] coppertop2000:
I don't think I've seen a device with this capability before. They will normally support receiving audio, but not sending it.

That being said, I can't confirm that this unit doesn't have that functionality...I just know that in all the years of working in car audio, I haven't found a unit that support this.
[MTCB Android Head Units Q&A] agentdr8:
When you get around to installing it, just keep in mind it isn't a regular apk that you click on and go through the install process. It's a system app that you just copy to /system/app as root.

The new Google Maps however, can just be installed in the standard way.

---------- Post added at 08:45 AM ---------- Previous post was at 08:43 AM ----------

I prefer the look of the new version, as it seems less cluttered on-screen. I think I found the APK mirrored on AndroidPolice.
[MTCB Android Head Units Q&A] xrapidx:
Ok - New maps installed :) Will see tomorrow. Now to try calendar sync

Titanium backup seems to have worked - not sure if my apps are market linked.

---------- Post added at 04:05 PM ---------- Previous post was at 04:01 PM ----------

Can anyone confirm if the Speedstick referred to in the Wiki is the Huawei E3276 (LTE)?
[MTCB Android Head Units Q&A] gy_ro:
Me neither, it's a link at the site of the second link.

Ronny.
[MTCB Android Head Units Q&A] xrapidx:
Calendar working... I just ran the apk and it started working.
[MTCB Android Head Units Q&A] kwalsh24:
I don't think its the remote turn on causing the problem. As if I turn tthe radio on (not engine) let it power up, have audio playing then fire the engine, the radio mutes the sound, then sub makes a loud pop (about double the power off pop) then the radio plays music again. The amp remains on as it has a fan and I can hear the fan spinning
[MTCB Android Head Units Q&A] agentdr8:
What I was trying to get at was if you wire your amp turn-on to ACC instead of the headunit, it should cut power to the sub amp when you take the key out, thus not amplifying any noise left on the sub output when the radio shuts off/down. In reverse though, your amp would be powered by the time the headunit comes up, which I guess would produce the startup pop. You could always wire in an amp delayed start module to address that. I've had to use them in the past with traditional headunits and amp setups to avoid pops.