yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] lankyboy29:
programming steering wheel control

Can someone please comment on how to program the steering control from a axxess aswc-1 to the huifei units. I try to reset and get it to auto tune, it picks up vol+ for a sec then nothing. Any thoughts?
[MTCB Android Head Units Q&A] agentdr8:
Most likely you will need to use the female 3.5mm adapter with the brown and brown/white wires, and connect them to the key1/key2 wires on the headunit. Connect the ground (black) to vehicle ground, as well as to the ground for the key1/key2 wires (should be on the wiring diagram on top of the headunit). Then program the aswc-1 for your buttons and which functions you want to do what, and after that, then use the swc mapping app on the headunit to assign the proper functions to your buttons.

I don't have SWC on my current vehicle, but should be receiving a Metra RFASWC here shortly, which should be very similar to the ASWC-1. I'll post some info once I get it working.
[MTCB Android Head Units Q&A] galets:
Folks, whoever has this unit: does it have a backup battery, or an option to install one? I want to make sure the unit can stay powered on for a couple days, so that it can sync media (podcasts, etc) while parked near wifi.
[MTCB Android Head Units Q&A] parazit26:
Can you tell me how the radio reception is? Is everything working such as usb ports and gps?
[MTCB Android Head Units Q&A] Mystery Machine:
Ipod Connection?

Hi, I have just bought one of these units (KitKat 4.4 version) from Amazon in the UK, I haven't wired it in yet as it didn't come with an Ipod/Iphone cable? does this unit now ship without one or do you just use a normal cable plugged into a usb port?

sorry if this is not the right place for this but I can not find anywhere else to post this question...
[MTCB Android Head Units Q&A] parazit26:
can you post a link from the unit you bought?
[MTCB Android Head Units Q&A] Mystery Machine:
This is the one I bought... It says in one of the pictures that it should have an ipod lead in the package?

amazon.co.uk /dp/B00P7G82TS (wont let me post outside links) :(
[MTCB Android Head Units Q&A] peti007:
Black screen bug(?) + standby time idea

I have the same now. No Android Navigation System logo when boot, but the car logo shows, after booting the Android is ok, until I select reverse, screen goes black but touch is working. HU can't see USB flashdrive.

So I have to update MCU blind?

I have KLD 2.16 update. It was OK for about a week.

I have a similar idea. Our HUs can stay in standby for 30-40 secs. This would be awesome if lasts for 1-2 days, but than the cars battery will drain. On the S150 thread kaween installed a picoUPS between the car's battery and the head unit.

This could be the solution, but the standby time is controlled by the MCU so we need a modified one, what seems impossible for now. So this could be cool, but impossible.
[MTCB Android Head Units Q&A] rgrfish:
Has anyone seen this radio? What type of radio is it as compared to the posts here? Cannot post a link here since I am under 10 Posts, but you can search Amazon for it

amazon.com/Pupug-Android-Navigation-Vehicle-Mirroring/dp/B00NXMYNIM/ref=sr_1_5?s=electronics&ie=UTF8&qid=1420662065&sr=1-5&keywords=pupug+car+stereo

Pupug Android 4.2 Car Radio GPS Navigation Double Din In Dash Stereo Video Vehicle DVD Player PC Android Phone Screen Mirroring

Product Description

Capacitive Touchscreen Android 4.2 Car Radio GPS Navigation Double Din In Dash Stereo Video Vehicle DVD Player PC Supporting Android Phone Screen Mirroring

Operation System: Pure Android 4.2

CPU: Dual-Core Cortex A9 1.6GHz

Ram: DDR3 1G

iNand Memory: 8G

OSD Languages: English, French, German, Spanish, Italian, Russian, Polish, Arabic, Chinese, Japanese, etc..

System

External Memory Up to 32GB/SD Card

Features SD/USB Support, Touch Screen, Games, Subwoofer Output, WiFi, Steering Wheel Control, 3D Interface, RDS, iPod, GPS, Built-in Bluetooth

Digital TV or Analog TV: no

Display Ratio 16:9

Screen Size 6.2 inch Screen Resolution 800 x 480

OSD Languages Japanese, Chinese, Arabic, Polish, Russian, Italian, Spanish, German, French, English

Media Type AVI, DVD+R/RW, DVD-R/RW, PDF, TXT, JPG, WAV, MKV, WMV, DVD, Mp4, JPEG, WMA, Mp3, VCD, CD+R/RW, CD-R/RW, CD, MPEG4

Radio Response Bandwidth AM: 522 KHz-1620 KHz;FM: 87.5 MHz-108 MHz

GPS

GPS Card Slot SD Card

Support Map Kudo, Sygic, Garmin, TOMTOM, IGO, etc..

Voice Navigation Yes

Amplifier & Interface Amplifier Max Output Power / Channel Qty 45 Watts x 4

Remote Control Yes

Connector Type 1 x ANTENNA, 1 x IPOD, 1 x STEERING WHEEL CONTROL, 1 x REARCAMERA, 1 x A/V OUT, 1 x A/V IN, 1 x GPS ANTENNA, 1 x USB, 1 x SUBWOOFER, 1 x AUX-IN, 1 x POWER

General

Type 2 Din

Color Black

What is in the box: GPS antenna x 1, WiFi USB Adapter x1, iPod cable x 1, Cable set x 1, Remote controlx 1, User Manual x1
[MTCB Android Head Units Q&A] parazit26:
yes you are right. you should report it to amazon and talk to the seller. I have a Huifei HU and i can confirm that the ipod function doesn't work. I wonder if it works on other Headunits.
[MTCB Android Head Units Q&A] agentdr8:
Using the picoUPS in the fashion that [MENTION=4736782]kaween[/MENTION] demonstrates would negate any shutdown timer from the MCU, as the headunit wouldn't receive the ignition off signal any longer (if you wired both ACC and BATT to the picoUPS output). Basically the headunit would be always-on, as long as the SLA battery can provide at least ~12V or greater. Once it depleted below that amount, the headunit would then go into shutdown.
[MTCB Android Head Units Q&A] peti007:
Yes, he connected both BATT and ACC to the picoUPS, but in my idea just the BATT. So in standby the HU should be alive for a long time, but with factory MCU we can't adjust standby delay so it won't work.
[MTCB Android Head Units Q&A] parazit26:
Sorry if quote you in my post, but you seem to be one of the most experienced here with this Headunits. I bricked my HU while updating to 4.4.4. The screen stays black and the unit won't turn on. Do you maybe have an idea how to recover the unit from such an issue?
[MTCB Android Head Units Q&A] RyanBRZ:
If its a one time thing, just connect ign to battery + until your sync is done. Or if it will be recurring, put a toggle switch on a wire from batt + to your ign line.
[MTCB Android Head Units Q&A] agentdr8:
Well, to be fair, it's not really a standby/sleep mode, like hitting the power button on an Android device. The MCU keeps power to the headunit for a fixed amount of time to give the MTCManager time to kill off all background processes prior to cutting power. I'm sure it was designed to reduce the possibility of filesystem corruption due to a hard power loss.

Ideally we'd be able to trigger the normal sleep function of Android and then keeping the headunit powered for extended periods of time wouldn't have that big of an impact on the car's battery.

EDIT: I might be able to override the powershutdown() method and force the IPowerManager instance to call goToSleep() instead of shutdown(). Will play around with this.
[MTCB Android Head Units Q&A] agentdr8:
Put a known-good version MCU image for your unit on the GPS card. Try and get into recovery using power + reset button, and try and flash it. It's possible that the unit is booting, just without any visible output since the MCU is messed up. So you would want to turn the vol knob clockwise once (I think it was the 2nd option) to highlight flash update/mcu image from sdcard, and then long-press the vol knob to confirm. If you got the right menu options, it will flash it and reboot and hopefully your screen will work again.
[MTCB Android Head Units Q&A] croul:
Is possible to set screensaver??

If you dont touch nothing for example 1 minut will apper big clock on the screen until Press something??

I got 4.4.4

Wysłane z mojego SM-N9005 przy użyciu Tapatalka
[MTCB Android Head Units Q&A] parazit26:
Are you satisfied with this HU? How is the radio reception. Does it have a connector for an external mic and did you try to hook up an ipod?

---------- Post added at 11:57 PM ---------- Previous post was at 11:56 PM ----------

Thank you sir but it doesn't work as well. So i guess the mcu is dead.
[MTCB Android Head Units Q&A] whbbrasilusa:
All working fantastic, just the audio is not 100% i will give note 8 of 10 not a big deal i'm really happy :D with mine love it
[MTCB Android Head Units Q&A] typos1:
Thats a Klyde and my Klyde came with an ipod lead.
[MTCB Android Head Units Q&A] comptechltd:
I am not so much wanting to put a UPS on mine as much as a delay. I have a diesel truck that mine is in. When I first start I have to turn the key on and wait for the glowplugs to heat up. Ususally the radio is about half booted then when I start it has to start from scratch as the radio goes dead during start.. That can't be good on it. What I want to do is put one of these in just to hold it on while starting. http://www.ebay.com/itm/251726751154?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Now my question is do I put this on the Yellow BATTERY line or on the red IGN line??

Steve
[MTCB Android Head Units Q&A] typos1:
Nothing wrong with the units in this thread, but if I didnt have one Id get the NU3001 or one of the Ownice units (also uses RK3188 processor), faster, twice as many cores, up to twice as much RAM, its a no brainer. I d have thought that KGL, KLD, RM, JY etc would have gotten some RK3188 units to market by now, considering that the RK3066 is 3 years old, but they dont seem to be bothered, I asked Klyde and they said it would take a lot of time an money and maybe later this year. I dont agree, I think its relatively simple to swap out the RK3066 tablet part and swap it for an RK3188 based tablet. The only thing with the newer stereos is that their MCUs arent as developed as much so support a lot less CAN Bus cars than the ones in this thread do.
[MTCB Android Head Units Q&A] agentdr8:
If by screensaver you mean the Dream service, then no. While you can get to the Dream settings screen, the service itself that is part of the SystemUI has been stripped out.

Ah. I ordered the same power-off delay module and am awaiting receipt of it. If it works how I imagine it will (hopefully), then you attach the red ACC line to the input side, and use the relay common pole to switch the yellow BATT wire to the red ACC wire of the radio harness. I posted a simple diagram here.
[MTCB Android Head Units Q&A] comptechltd:
I looked at your diagram. NICE. How does it work when wired like you have it?? I noticed there is only one wire running to the HU?

Steve
[MTCB Android Head Units Q&A] R4D3N:
Does somebody have a version of iGo Primo which works on 1024x600 units?

I tried ll the versions I had and I could find and none of them works. I get an resolution error...
[MTCB Android Head Units Q&A] agentdr8:
The board needs a 12V input (Vin) to both power itself and know when to start the delay (when there's an absence of Vin), so the switched ACC line provides this, as it's the one that loses 12V when cranking the engine. The module basically charges the capacitor and uses that, along with the timer circuit to hold the relay closed. The relay just connects (NO and COM) or disconnects (NC and COM) two poles when the coil is energized.

The headunit uses the red ACC wire to know when to initiate the shutdown process (when it goes below ~12V), so by providing 12V via the yellow BATT wire through the relay contacts, the headunit will see 12V at all times when the module is powered up (via the vehicle's ACC line), as well as when the relay is closed as part of the delayed off.

The module is just a fancier (and a bit more feature-full) version of the circuit I posted here.
[MTCB Android Head Units Q&A] SteelH:
Have a klyde HU, kk 4.4, installed xposedmtc to try and get swc controls to work with pandora. I have tried getting forward/back to work, but when i press thise buttons, itbstarts the sh ck music app and doesnt do anything to pandora. Is the something im missing?
[MTCB Android Head Units Q&A] agentdr8:
XposedMTC has minimal influence over what the SWC buttons do. What you probably want is Car Service by [MENTION=5867075]KeiserSozeyFr[/MENTION] (not sure if it supports Pandora though).
[MTCB Android Head Units Q&A] comptechltd:
Sounds easy enough. Thanks a ton. Just ordered it so I'll let you know when it gets off the slow boat.....lol

Steve
[MTCB Android Head Units Q&A] idrak3:
Joyous type J 2812 stuck on boot

Hi Sorry if this has been discussion before.

i had unit Joyous type J 2812 in my car.. its only work for few month only.

the unit has been rooted using kinguser.

Now the stuff only stuck on boot screen

my question is how to reset to factory setting?
[MTCB Android Head Units Q&A] superlover911:
Sorry for slow reply, just got back from out of town. Yes I do have Can Bus. The one sent to me is for a Buick and I have a Chevy Silverado. Shouldn't make a differance though... Right?
[MTCB Android Head Units Q&A] joesnoe111:
Not sure if the issue have been fixed with the newer MCUs, but as far as I can recall there is a known issue with can bus and SWC. You can test by going to system settings and disabling the canbus then see if the SWC work or not.
[MTCB Android Head Units Q&A] parazit26:
what is wrong with your version?
[MTCB Android Head Units Q&A] idr3s:
Hi, i just installed [MENTION=853627]coudu[/MENTION] s 4.4.4 kgl fw. Its working out great for me although I have some problem with Play store. Apps like poweramp can not connect to it to verify prchase. Anyway to fix that.

Also thanks again to [MENTION=434511]agentdr8[/MENTION] for the obd fix in the xposed app.

My bt obd works!!
[MTCB Android Head Units Q&A] parazit26:
Thank you for the info. Do you know if the roms from this thread will also work on the NU3001 or Ownice? Also wondering if xposedmtc, carservice... will work too. You are right, a RK3188 unit would be better but if there is no community for this units, it will hard be to exchange or get help from each other. I really like this thread here because everyone is very helpful. Well for me the can bus features wouldn't be a big deal, because i have a self made can bus adapter and i need a universal unit anyway :)
[MTCB Android Head Units Q&A] agentdr8:
I remember having this issue in the past, but I don't recall exactly how it was fixed. Maybe [MENTION=853627]coudu[/MENTION] can offer some advice.
[MTCB Android Head Units Q&A] zaphod2:
they use the http://www.ebay.de/itm/301250847589?_trksid=p2060778.m2749.l2648&ssPageName=STRK%3AMEBIDX%3AIT

hereby the radio stays on 10 minutes longer and start does not go out.

I have it in my diesel
[MTCB Android Head Units Q&A] safak:
I guess this is a temporary situation.

There should be a reset hole on the right hand side of the the unit .Try to softreset the device with a pin...
[MTCB Android Head Units Q&A] R4D3N:
I get an error like this:

Error: user interface resolution is not supported or compatible skin can not be found.

exiting application.

I used a special version of iGo which is for 1024x600 resolution and one from a multiresolution kit and none of them works.
[MTCB Android Head Units Q&A] zorantoma:
Delite save folder in igo and try again.
[MTCB Android Head Units Q&A] Stevens^:
Hello there, found this thread while looking to mod my HU.

I've got a MTCB-GS-v1.85 a few months ago and very happy with it, specially at the price.

1 thing I wanted to do is increase the amount of space for text in the media player - I saw a mod already done. Another is to make a nice widget for said media player.

I'm on page 36 of 240 in this thread, learning about rooting, etc - iPhone user here :)

As soon as I catch up with the rest of the thread I hope I can contribute.
[MTCB Android Head Units Q&A] R4D3N:
Already tried that.
[MTCB Android Head Units Q&A] typos1:
There are threads for both the Ownice units and the NU3001 on XDA. Xposed should work on both if theyre rooted, dont think Car service will though.
[MTCB Android Head Units Q&A] xrapidx:
Does anyone know how to get a context menu to display on these head units, e.g. I'm trying to setup Torrque/autotalky doing the following:

D. Data Logging and Upload

1. Select what to log

-Select Log

-click menu at the buttom (note) <--- This is where I have a problem, my phone has a button which pops up a menu with log all, how do I do that on the headunit?

– add PID to log (Log All)
[MTCB Android Head Units Q&A] typos1:
A few weeks back someone posted a pic of a KLD unit that had Tx and RX connected to the adaptor.

CAN Bus seems strange on these units, for instance 2 way CAN Bus started working on some VWs after 4.4.2, but only with one of the oldest MCUs - 1.77, not with any of the newer MCU versions (on KGL versions, on "VW simple" I think - reported by posters in this thread).
[MTCB Android Head Units Q&A] grumetecap:
Wich one is the last KLD update.img from coudu?26th december?

http://huifei.fs-fileserver.de/content/firmware/coudu's_roms/4.4.4/800x480/
[MTCB Android Head Units Q&A] xrapidx:
There's a date and version number in the filename...
[MTCB Android Head Units Q&A] Karanso:
For me the best Rom from [MENTION=3590033]Malaysk[/MENTION] - 4pda

Android-4.4.4 1024X600

https://yadi.sk/d/d5NDRIzddi98B

Android-4.4.4 800X480

https://yadi.sk/d/bd7ON4pgdi5Fa

All works PEFEKT :good:

MCU 2.16 / KLD

Unit

http://www.ebay.de/itm/201168212392
[MTCB Android Head Units Q&A] parazit26:
Does anyone have this unit you? http://www.aliexpress.com/item/DHL-...in-Universal-Android-4-4-Car/32259300307.html
[MTCB Android Head Units Q&A] obekende:
[Q

Hi Karanso, thks for shared, i have Erisin ES9746A, KGL mcu 1.86, I'll test it on my radio :)

http://www.erisin.com/es9746a-7-and...gps-obd-bmw-3-e46-m3-rover-75-mg-zt_p494.html

B, Regards
[MTCB Android Head Units Q&A] Mystery Machine:
Managed to get into contact with the seller and they are sending me on ASAP :)
[MTCB Android Head Units Q&A] parazit26:
check the sys.txt file and compare this settings.

[rawdisplay]

driver=engine

;screen_xy="auto"

;driver="gdi"

;highres=1

;screen_xy="800_480:1196x670/720x1134" ;

;screen_xy="800_480:1196x720/720x1184:fullscreen" ;
[MTCB Android Head Units Q&A] MasterPrenium:
Hello Guys and [MENTION=853627]coudu[/MENTION],

I'm having an issue with coudu v4.2.1 KGL version (also with official KGL 4.4.4 release). My problem is with copilot, it's crashing (reformated, reinstall ect, same problem).

It was working great with coudu v3.1 (android 4.4.2).

Seems the problem is coming from 4.4.4... Here is my log, on pastebin : http://pastebin.com/Kgn4qH6n

There is a null pointer exception. I'm quite sure the problem is there. If someone is having any idea on how to fix it ... (Also some errors a little bit before... With buffer ect ...)
[MTCB Android Head Units Q&A] Karanso:
Yeah, Erisin too

P. S.

You can change the Resolution 1024x600 easy.

Resolution Changer works
[MTCB Android Head Units Q&A] :
Ran into a big problem today. I was listening to some music when the unit crashed. Now the screen is totally black all the time and the front lights are flashing. It let's me eject a CD, but nothing else. Don't know what's wrong. Unit has been disconnected, but no good.

Any advice? Can't access bootloader as screen is totally black. JY unit ?
[MTCB Android Head Units Q&A] agentdr8:
Hopefully it isn't a broken connector like the one [MENTION=517163]webdude12[/MENTION] encountered way back when this thread started. You could always contact the seller and try and get support that way. Or if you're feeling brave, you could just open it up and verify everything is connected where it should be.
[MTCB Android Head Units Q&A] :
I doubt that it's a broken connector, it seems like software corruption occurred when it crashed
[MTCB Android Head Units Q&A] typos1:
Youve no way of knowing unless you look.
[MTCB Android Head Units Q&A] renedis:
Can someone tell me what the APK is called for changing the bootlogo to your own car brand?

Thank you.
[MTCB Android Head Units Q&A] peti007:
I upgraded MCU to KLD 2.20 blindly. It updated, but not solved my problem.

Now when the HU booted up and radio starts, my phone starts playing music. Not over the head unit, the phone's own speaker. I will try a full upgrade with Android+MCU but I'm affraid this is a hardware error. :crying:
[MTCB Android Head Units Q&A] agentdr8:
I did find that it's only the BOOT_COMPLETED intent that seems to get consumed, most likely by the launcher, and no result is sent back, so it just sits blocking. I'm thinking the broadcast is of the ordered variety, and that's why it just waits for the launcher to finish its operations before sending a result so the Service Manager can move on to the next receiver.

What I did as a workaround for now is to add the android.net.wifi.WIFI_STATE_CHANGED intent filter (and associated permission), which seems to fire off immediately as soon as my headunit connects to my phone's hotspot (which is as soon as I get in the car per Tasker). Seems to work great now in both XposedMTC and Poweramp Toast.

IIRC, the Factory Settings activity is located within the Settings.apk.
[MTCB Android Head Units Q&A] renedis:
Thank you for the fast response. Can you tell me if that is the only thing that is modified in the settings.apk? If so, can I easily copy settings.apk (and logo folder in system.img) to an other Android system?
[MTCB Android Head Units Q&A] R4D3N:
I will try it just now. but with this settings:

screen_xy="1280_800:1024x536/600x949:fullscreen"

or

screen_xy="1024_768:1024x536/600x949:fullscreen"

I have the unit with 1024x600 screen.
[MTCB Android Head Units Q&A] lankyboy29:
Ok thanks. This is the way i have it hooked up. Only problem now is getting it programmed which I can't seem to do for the life of me

thanks though
[MTCB Android Head Units Q&A] agentdr8:
No, there's a lot of things changed/customized in Settings.apk done by the mfg, and it won't be usable on any other systems.

---------- Post added at 12:03 PM ---------- Previous post was at 11:59 AM ----------

Well, like I had said previously, leaving the receiver code in for BOOT_COMPLETED doesn't harm anything, regardless of if the intent gets delivered at a later time, or never. If the service that gets started from that receiver is already running, it won't start again. If nothing else, your app/service will be prepared to function as it normally should if this issue ever gets sorted out by the rom mfg.
[MTCB Android Head Units Q&A] renedis:
Thanks again for the fast reply. Too bad :( I hoped I could extract en recompile it in my NU3001 android H/U.
[MTCB Android Head Units Q&A] agentdr8:
It starts pretty much the same time as my last foreground app (PA in my case). So by the time music is playing, the services are running. Quick enough for my use-case.
[MTCB Android Head Units Q&A] typos1:
You want to try it on the NU3001 ?

I think you do, youd be better off taking it from the 1024x600 firmware to match the res on the NU3001, but I m sure the settings apk from the NU3001 has more entries than these units, so you might want to re-enable them, plus as agentdr8 says he doesnt think youd be able to use it an other systems, he probably doesnt realise that the unit you want to put it on is also Rockchip system, that may make a difference. You may be able to extract the bits you need and add it to the settings.apk from the NU3001 ? Also I m sure there are apps that let you change the boot animation.