yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] SilverViper2k:
Subwoofer RCA

I purchased a powered/amplified sub and connected it to the sub out. However, I hear no sound. I have an JY unit and tried mcu 2.59 with and without dark Leo's version. I measured 14v at the sub's + and control wire so that doesn't seem to be the problem...

I did find some posts about connecting the sub to the rear RCAs, I'm not sure if they meant the output for the rear speakers or the RCA at the back of the unit in general :/

Can anyone confirm the sub out should function on the JY units?
[MTCB Android Head Units Q&A] kruuth:
I'm not sure if this is the place but is there a way to set google maps to assume I'm in a car? I don't like having the thing ask me to set it every single time that I try to drive somewhere.
[MTCB Android Head Units Q&A] agentdr8:
Probably only if you use it via Android Auto.
[MTCB Android Head Units Q&A] grahamwright1:
Rambo from Joying just posted a video on their YouTube channel showing this - https://www.youtube.com/watch?v=_psaihofQUM&feature=em-subs_digest

Seems to use the RL and RR RCA connections that are used to drive a rear headrest monitor, and the Sub RCA for low frequency output.
[MTCB Android Head Units Q&A] SPACSYSTEM:
Hello again everyone,

Someone can tell me how can I decompile the MCU or see their structure?

I ask because apparently the darkleo "manage and open" the configuration of the MCU.

Or am I wrong?

Is there any application to mirror screen between HU with Android 4.4.4 and Samsung Grand Duos?

Thanks for any help.
[MTCB Android Head Units Q&A] SilverViper2k:
Thanks for that! Any idea if that's really LFE? Because I will have to remove the head unit completely and I have really easy access to the speaker wires to which I can add high and low pass filters in place and get wire to the sub input, without totally removing the center console of my car apart again, as that's what it takes to get my unit out...

I also know that dark Leo set LFE to 0hz in his mod, any idea what the original value is?

And just to be extra sure, the non-darkleo version does not put any sound below the LFE cut off to the speakers, right?
[MTCB Android Head Units Q&A] Brendo:
I have Focus 2010 and Eonon GA5161 (dual core version of THIS one)

Everything works fine for me (as it did with my previous wince/android 2.3 model) - although not really tested the lights side of things

I need to take my hu out on the weekend to fix reverse camera, so will check my canbus version (I do know it is the Mondeo one) and wiring. All I did when installing was to hook it all up and everything worked straight out of the box

The hu only turns on when car is turned on (acc or higher)

I'd suggest flashing different mcu and altering settings in factory settings (I'm still using the default mcu that came with my hu)

Default rom partition is very small, use dsa or malaysk custom rom to make larger partition (I also remember dsa posting about how to alter partition sizes yourself)
[MTCB Android Head Units Q&A] agentdr8:
If you search the thread, [MENTION=3077590]darkleo2000[/MENTION] had posted info about the MCUs a while back. It requires some assembly knowledge.
[MTCB Android Head Units Q&A] hobbes_VT:
Prevent bluetooth app loading on startup

Hi all - I tried to search the forum for my issue, but it get's increasingly difficult to find answers to specific problems - I was not successful in finding anything related:

I have a RK3066 KLD unit with Malaysk's ROM and whenever I startup my unit and my phone connects via Bluetooth the phone app starts. I want to connect it "silent" (so that I can receive calls) but I don't want it to automatically jump to it when my phone connects. Is this only my configuration or do others have the same behavior (and just don't care switching back to the home screen).

Anyway, I'd like to know if there's anything I can do to prevent this from happening.

Thanks for any pointers,

Georg
[MTCB Android Head Units Q&A] fabianosan:
When we get an hui fei unit with Android 5.0 with Android AUTO will be awesome.

Because the Android AUTO makes all the Google Apps more intuitive on driving:

https://play.google.com/store/apps/details?id=com.google.android.projection.gearhead
[MTCB Android Head Units Q&A] nixfu:
Mine does the same thing.....always wondered how to keep it from automatically going to the bluetooth screen myself.

Anyone?
[MTCB Android Head Units Q&A] OneCheekyDevil:
The HU usually starts the last ACTIVE app you had when you shut down.

My unit always starts the RADIO app is it was the last running app when i switched off the car. And yes, mine does connect the bluetooth silently when it boots up.

Even if i made a call in the bluetooth app and then returned to the desktop before switching off the car, it would still boot up to the desktop the next time i start my car.
[MTCB Android Head Units Q&A] RichyE:
I have the latest version of Malaysk RK3188 800*480 rom and I don't have this problem.

It only jumps to my bluetooth app when it was the last program I used before I turned it off, but it does that with all the apps and that is normal..

[MENTION=1357686]Billkaza[/MENTION] I updated to MCu KLD2 v 2.77 now and I agree that the radio is worse.

It doesn't even find radio channels anymore when I use the scan feature.

When I manually to the station it works.

Also it changed my Factory Settings Password (MCU Settings): 126 isn't working anymore

Update: after a couple of reboots the MCU 2.77 is working and password also again...
[MTCB Android Head Units Q&A] weapons777:
Thanks for your help [MENTION=6041319]dsa8310[/MENTION], I have Busybox installed. The command works from a Terminal window both with and without busybox in front. However it still doesn't do anything at reboot when added to install-recovery.sh.
[MTCB Android Head Units Q&A] pants001:
I have my sleep time set to 10 mins, which is fine for ducking into the service station etc.

However no matter what the HU is doing prior, on wake it always wants to start radio, as well as the prior app.

So i now have radio playing, and also JetAudio for example.

Is there a setting / fix for this?
[MTCB Android Head Units Q&A] Billkaza:
Propably there is something inside MCU that has to do with Radio signal..Does someone knows how to tweak the MCU radio signal part in order to raise it and be as good as possible?
[MTCB Android Head Units Q&A] RichyE:
[MENTION=6481864]pants001[/MENTION] You didn't set the apps to autostart with the startup builder?
[MTCB Android Head Units Q&A] pants001:
Hmmm maybe not, would this sort my issue?
[MTCB Android Head Units Q&A] Billkaza:
Something else that has never worked to me with malaysk roms is the auto dimming using GPS time.. When i set it to manual it works but no to auto..

Is it something else that i have to adjust in order to work with GPS time.
[MTCB Android Head Units Q&A] ktibor69:
I use my active sub via rear out - RCA at the back of the HU. I recommend to use the v2.59 MCU with dark Leo's version, because the low pass filter is off in this MCU.
[MTCB Android Head Units Q&A] jordanow:
Thank you guys for your answers and experiences of these kind of HU on ford focus.

There is something interesting is that the first time I tried to install the HU I plugged the canbus decoder (it didn´t work), then without the canbus and acc wire plugged it worked then tried again with the canbus and then the HU worked for a while (longer than in the video) and the steering wheel controls were working normally (without changing the canbus setting).

I updated with the last mcu and then I didn´t succeed to get this happen again. I will try to flash older mcu to check.

JY guys tell me that my car does not need canbus decoder and to get the steering wheel controls working I should connect the key 2 wire with the red white wire.

eL_gUaNcHe, you said that you needed to bring the car in a professional, do you know exactly what did this person do to make it work?

I will try all of this later today, let´s see how it goes. I will let you know.
[MTCB Android Head Units Q&A] ktibor69:
I have a problem.

Yesterday I would like to buy the Wavesink Plus DAB+ FM-RDS app .

But the googleplay doesn't allow to buy this app, because my HU not compatible to this app.

Tumke32, how can you buy the app. Can you send me the apk, that I can try today afternoon?

I'm using now trial version which doesn't include DAB+ feature. I have also Wavesink Plus v1.22 patched, I saw this app has weaker reciption, like last trial version in FM mode.
[MTCB Android Head Units Q&A] harpocar:
Hello.

It's possible that in the radio or music app show the station name (RDS) or the tag id3 of the mp3 sound in the original dashboard LCD of the car?
[MTCB Android Head Units Q&A] Malaysk:
Other watches. Replace in System/app
[MTCB Android Head Units Q&A] Babss:
Canbus settings

Hi!

Maybe you could help me.

I bought a HU (KLD2 type for bmw e46).

I get a wiring with canbus box. I attached everything. I can use the steering wheel buttons, but I cannot remapping. when i tried to mapping the volume buttons, the volume adjusted up and down but in the HU not sense in the SWC menu. From the canbus box came out a white cable that connected to the blue cable.from the HU I tried to connect to white to white, but after some buttons not working (prev, next)

In the factory setting menu the canbus option NO. this is the only way to try to make it work. when I set other options (BMW union or something else) the wheel control not working.

Could somebody help me to find out how it works?

Sorry my begginer english..

Thanks

Balazs
[MTCB Android Head Units Q&A] SPACSYSTEM:
Ok thanks @agentdr8.

I've contacted with @darkleo2000 when I see your quote. Thanks.
[MTCB Android Head Units Q&A] R4D3N:
Unfortunately, it doesn't work. I followed your instructions but nothing changes. I still have the Android at startup.
[MTCB Android Head Units Q&A] veget83:
small guide to repair damaged touch screen &amp;amp;amp; Upgrade to rk 3188

last weekend i have replaced my touch screen display damaged, and upgrade my KGL dual core cpu to RK3188 quad core:

I order display replacement and slot CPU from my vendor (25+75$)

Tutorial

1. wait delivery from china ...

2. remove 4 screws behind the panel of unit

3 remove 4 screws to pull up the display,remove the little orange connection of toch screen, then remove 2 svcrews and tape to slot cpu.

4 pull up display and disassemble by removing scotch tape.

5 replace the new touch panel, be very careful don't touch the glass on the inside...

6 lock the display with new scotch tape, re connect little orange connection on the inside

7 assemble all...

for new cpu need to download new ROM with rk3188 firmware like this: http://xdaforums.com/showpost.php?p=60591423&postcount=12068

put on sd card and flash it...

no need to flash new MCU (is the same)

enjoy
[MTCB Android Head Units Q&A] leszekpap:
Be sure that you are pasting file in correct folder.. because there is mtc folder in main catalog, but you should paste this file to system/mtc/

Best regards

Leszek
[MTCB Android Head Units Q&A] fminformatica:
thanks to dsa8310.

I solved withh pppwidget2

:D
[MTCB Android Head Units Q&A] R4D3N:
I checked 3 times. The path is ok. There was already that file and I replaced it with the new one.
[MTCB Android Head Units Q&A] leszekpap:
For me its working. Did you change also permission for file (644) after pasting ? I did it - that first I removed original file in system/mtc/ and then pasting new one, then changing permissions.
[MTCB Android Head Units Q&A] ffwd4490:
Does anyone have a link to the Dark Leo v2.59 MCU? The first page link to google no longer works....
[MTCB Android Head Units Q&A] ktibor69:
Link to MCU:

http://xdaforums.com/showpost.php?p=61291848&postcount=14139
[MTCB Android Head Units Q&A] pk313:
Stupid remind. ..do you've select animation 2 from sliding menu on rh side of display. ..apply ...and reset?

Inviato dal mio SM-A500FU utilizzando Tapatalk
[MTCB Android Head Units Q&A] weapons777:
I'm on Malaysk's pre-rooted rom.
[MTCB Android Head Units Q&A] Laberkopf:
CAN Bus problems with Pumpkin HU in Opel Corsa D

So, today I just received mine. Branded by Pumpkin made for Opel.

Car is an Opel Corsa D 3 Door.

Stock rom, Android 4.4, Dual-Core

Problem is: CAN Bus doesn't work at all. Neither Steering Wheel Controls nor Turning on/off with the ignition.

The CAN Bus was set to 09 in Factory Settings.

Troubleshooting?
[MTCB Android Head Units Q&A] warr4768:
Thanks a lot Klyde for selling a non upgradable unit,was going to upgrade it to a rk3166 but when I dismantled it it is not upgradable . Now I've got a rk3166 som board costing £75 which is useless .:crying:
[MTCB Android Head Units Q&A] Babss:
Try to find the som board behind the LCD panel..
[MTCB Android Head Units Q&A] veget83:
Could be find a slot tipe DDR 3 (the same of PC ram memory ) near display

See my previous post...

Inviato dal mio HTC One M8 utilizzando Tapatalk
[MTCB Android Head Units Q&A] jamieb122:
Unless it is hidden by those cables (can't tell resolution is pretty low), the Rockchip board is hidden somewhere else. None of the ICs visible is a Rockchip SoC, which means it is somewhere else in the unit.
[MTCB Android Head Units Q&A] warr4768:
Do you reckon it's behind the lcd panel, haha that's the only place I didn't look. I'll have to look another day now. If someone could confirm this as I don't want to be taking the lcd screen too pieces if it's not there. But saying that it's got to be there.:good:
[MTCB Android Head Units Q&A] Billkaza:
As you dissasemble the unit and you look the board from back to front you can see the SOM attached on a socket on a board behind the LCD panel.. you dont have to do something more than that you already did.
[MTCB Android Head Units Q&A] butthead123:
Hi,

I am using Malaysk's custom rom for my 1024x600 hotaudio 2100 unit. After flashing the rom, I do not see the clock on the status bar anymore. Is there any way to get it back? I looked through the meus and I couldn't find a setting for it so I probably missed something. Thank you in advance
[MTCB Android Head Units Q&A] warr4768:
I have just messaged the supplier and he has confirmed it is behind the lcd panel. Why didn't I just asked him this morning I might still have a working DVDs player lol. Good job I don't use DVDs ,have to use it to keep my toast warm in the morning now.
[MTCB Android Head Units Q&A] Alphas:
Is the firmware in KLD quadcore folder.

KLD 800x480 20150810 Factory

folder rooted or stock?
[MTCB Android Head Units Q&A] DWilks:
[MENTION=2364576]butthead123[/MENTION], it's probably there but a dark color

Try Settings\System\Setting the clock date and style\clock color
[MTCB Android Head Units Q&A] vdubskey:
Can any of the rom guru's with more expertise than me take a look at my parameter file and see if everything looks good. This is a HotAudio RK3188 unit 16GB/1GB.

I used Sergio Poverony's RKxx Firmware Tools to extract the update.img. I opened the parameter file with Doperst's Parameter Editor.

My userdata partition was originally 1044480 KB. I made my new userdata partition 2097152 KB.

This is the original parameter file:

FIRMWARE_VER:4.4.2
MACHINE_MODEL:rk3188
MACHINE_ID:007
MANUFACTURER:RK30SDK
MAGIC: 0x5041524B
ATAG: 0x60000800
MACHINE: 3066
CHECK_MASK: 0x80
KERNEL_IMG: 0x60408000
#RECOVER_KEY: 1,1,0,20,0
CMDLINE: init=/init initrd=0x62000000,0x00800000 mtdparts=rk29xxnand:0x00002000@0x00002000(misc),0x00006000@0x00004000(kernel),0x00006000@0x0000a000(boot),0x00010000@0x00010000(recovery),0x00020000@0x00020000(backup),0x00040000@0x00040000(cache),0x001FE000@0x00080000(userdata),0x00002000@0x0027E000(metadata),0x00002000@0x00280000(kpanic),0x00180000@0x00282000(system),0x00040000@0x00402000(oem),-@0x00442000(user)

This is the updated parameter file:

FIRMWARE_VER:4.4.2
MACHINE_MODEL:rk3188
MACHINE_ID:007
MANUFACTURER:RK30SDK
MAGIC: 0x5041524B
ATAG: 0x60000800
MACHINE: 3066
CHECK_MASK: 0x80
KERNEL_IMG: 0x60408000
#RECOVER_KEY: 1,1,0,20,0
CMDLINE: init=/init initrd=0x62000000,0x00800000 mtdparts=rk29xxnand:0x00002000@0x00002000(misc),0x00006000@0x00004000(kernel),0x00006000@0x0000A000(boot),0x00010000@0x00010000(recovery),0x00020000@0x00020000(backup),0x00040000@0x00040000(cache),0x00400000@0x00080000(userdata),0x00002000@0x00480000(metadata),0x00002000@0x00482000(kpanic),0x00180000@0x00484000(system),0x00040000@0x00604000(oem),-@0x00644000(user)

Also, is there any reason to not just increase the userdata partition to the max available space on the NAND FLASH? I chose 2GB as that is what Malaysk used for his custom rom's. It seems like a waste as I think only a few megabytes is actually being used by my apps on that partition. Im not exactly sure how android chooses what apps/app data are stored on the NAND FLASH area so figured I would ask before repacking.

Thanks.
[MTCB Android Head Units Q&A] Mat.:
Hi

MTCRadioBlue an attachment
[MTCB Android Head Units Q&A] Tumke32:
Try to buy it on your phone, then copy your apk file to your HU
[MTCB Android Head Units Q&A] kiokio1:
where to buy a new processor ??
[MTCB Android Head Units Q&A] agentdr8:
The majority of the rk3066 and rk3188 devices only had 8GB of NAND, which has to house all of the partitions. There are some custom roms here with 2, 2.5, and 3GB userdata partitions. But since yours has 16GB, you may want to increase it.

Android installs all apps by default to /data/app, which is your userdata partition. It also houses the application preferences and associated assets in /data/data.
[MTCB Android Head Units Q&A] eL_gUaNcHe:
Sorry , I did not see how he connected the wires.

No need for anything canbus , the unit works perfectly without having to connect .
[MTCB Android Head Units Q&A] warr4768:
Think I owe Klyde an apology , it was behind the lcd panel, just 4 screws and it was right in front off me. Could off not been any easier , didn't have to touch the main box at all this morning .
[MTCB Android Head Units Q&A] veget83:
Contact your vendor.... Anyone can do some problem...

My vendor are shenzen industry ..

Inviato dal mio HTC One M8 utilizzando Tapatalk
[MTCB Android Head Units Q&A] kruuth:
I'm still experimenting with the external wireless....is it possible to swap the internal wireless so the system assumes wlan1 is wlan0?
[MTCB Android Head Units Q&A] vdubskey:
Sweet. I think I will bump it up as long as there are no conflicts. Just so I understand, its not possible (or not recommended?) to just put the entire remaining space of the 16GB, after allocating the boot, system, recovery, oem, etc partitions, into the userdata partition so all available space falls under the INTERNAL section of the Storage Settings in android? There still needs to be SOME space left of the NAND FLASH? I was just hoping just to have INTERNAL and then EXTERNAL SD 1 and 2 and then USB 1 and 2 in my Storage Settings.

Thanks again
[MTCB Android Head Units Q&A] Nero_PL:
Hi guys I think about to upgrade my unit to a RK3188.

I've got a ES9746A, did anyone already upgrade this unit and can tell me more about the upgrade?

THANKS!
[MTCB Android Head Units Q&A] jordanow:
I tried to use different mcu and canbus settings but it didn't change anything. After connected the key 2, the steering wheel control fully works. You can see this video to see what I did.

youtube.com/watch?v=QaJqWy9Tk24

I have a question about the startup of the HU. With the stock HU I was able to start it by turning the key in the position 1 but now I have to turn the key in position 3, is it normal/intended?
[MTCB Android Head Units Q&A] Tumke32:
Thanks for the link to the tutorial. I'm not a XML specialist so maybe you or someone else can anwser my question. I found the radio.xml file in the layout folder. In note++ i see the xml language.

How do people change to complete layout of (in this case) the radio app?? Is it just programming in XML or do they use a graphic program to change the positions of the buttons and add background pictures etc.

I know that xml is used for the structure of the information and html for example for the presentation. Is it possible to see (emulate) the app and change positions of buttons real time like a html editor like Dreamweaver does?
[MTCB Android Head Units Q&A] meirion:
Mat

IS it possible to have your great radio app in 800*480? Thanks

meirion
[MTCB Android Head Units Q&A] agentdr8:
I don't recall if the /data/media partition is separate on these headunits, but that's what /sdcard (Internal storage, not related to user apps) is usually a symlink to. It might be what's specified as the user partition in the parameters file, but you'd want to check /proc/partitions on the headunit first.

The xml files in this case specify the layout of all visible (and non-visible) elements in an app/activity. See this for more information on layouts. Using Android Studio, it would be possible to graphically re-arrange elements, but code can always alter that, so both the decompiled java source and the layout should be inspected and modified in tandem.
[MTCB Android Head Units Q&A] veget83:
I don't know your code...

You can see what kind of unit are...

all units are based on three main types with the same characteristics: kgl, kld and jy...

I have kgl and upgrade is very simple...

Think other unit can be the same...

Inviato dal mio HTC One M8 utilizzando Tapatalk
[MTCB Android Head Units Q&A] Nero_PL:
Its a KGL Unit.

What do I need for a Upgrade?

And have you some advices for me?
[MTCB Android Head Units Q&A] Quiksmage:
I have a question. I currently have a stock rooted 4.4.4 JY unit. Bluetooth works great using the microphone, but I found using voice search it barely ever recognizes my voice. I cannot use "OK google" nor can I train the device to recognize my voice for OK google on every screen. It simply says something along of the lines of "Can't use microphone, please restart device." Is this ROM related or hardware related? Are you guys able to use voice search and ok google on your units?

Another question. When trying to use Next radio it states that the app doesn't have permission to use the radio antenna? Is this also rom related? The default radio app works great. I just wanted to see if I had options.
[MTCB Android Head Units Q&A] dynamight4u:
Almost as bad as buying those silly amp controllers from Chinese sellers that don't enable your factory amp.. now I gotta buy a Metra interface
[MTCB Android Head Units Q&A] veget83:
I have made a little guide....

See this post:

http://xdaforums.com/showthread.php?p=62832292

in my case I also replaced the touch screen display damaged

Inviato dal mio HTC One M8 utilizzando Tapatalk
[MTCB Android Head Units Q&A] Nero_PL:
Do you realize a difference after the upgrade?

Do the radio boot faster or does it work smother?