yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] mrniceguy1437:
sorry about the link, https://play.google.com/apps/testing/com.bitspice.automate works for me in chrome but maybe because I'm in the group already.

I got a dual core unit from ebay.
[MTCB Android Head Units Q&A] typos1:
Ok, still doesnt work for me on Firefox, I ll google it.

Just asked about dual or quad as weve had the first quadcore owner post on here today.
[MTCB Android Head Units Q&A] andr786:
i have inserted in both , it's definitely formatted as fat32 now. it's just not detecting it at all, the gps and sd slots don't seem very good as in the card just slides in and out but i can also feel the spring. if i insert upside down it just goes all the way in and don't want that! anyway sounds like my slots are mash up or whatever.

anyway i got this usb with a built in card reader, plugged it in with microsd and system just keep restarting. any more ideas? should it be possible through usb card reader?
[MTCB Android Head Units Q&A] typos1:
Nope, updates only work via GPS SD slot, I would contact your seller and ask for a replacement SD card board, its quite easy to change.
[MTCB Android Head Units Q&A] typos1:
Its the dual tuner/diversity DVB-T one and yes, its better than the single tuner type, has very poor onscreen menus though, the last thing I want when I m driving is a tv I dont wanna crash !

But I can get digital radio through it when I m driving which is good and occasionally watching tv when parked up is kinda cool. :)

I posted all the info I have apart from the dimensions which you can get without opening the unit by using the screw holes as a guide, but seeing as its you I ve measured it - its 3cm x 3cm :)

I cant give you anymore info cos I dont have anymore, the only writing is on the back of the fan and I ve posted a pic, I thought you said the info wasnt for you ? ! :)

And I also thought you had a fan as well, when did you get your unit ?
[MTCB Android Head Units Q&A] Petrows:
Headunit service update 2.11

Update introduses new "plugin" system for control music apps and prevent bugs with multiply players play.

1. New player control system. Ability to switch PcRadio app (root required).

2. Music player auto-run and start on "Phone" button. Thanks Jo De Boeck for pull request and help.

Downloads

+ Application page on Google Play

+ My website storage (+older versions archive)
[MTCB Android Head Units Q&A] typos1:
Nice work Petrows, there was a post from someone today with an RK3188 unit, the first we know of :)
[MTCB Android Head Units Q&A] clearchris:
How many times did you try it? It took me at least 5 times before it took. Your slots dont sound great either.

---------- Post added at 01:11 PM ---------- Previous post was at 01:03 PM ----------

Ah, thx! I dont actually have a front line in, so no loss there.
[MTCB Android Head Units Q&A] abdoahmed79:
I did my last update from front USB n it works
[MTCB Android Head Units Q&A] ga!nusha:
you first need to share the group link
[MTCB Android Head Units Q&A] mrniceguy1437:
Sorry guys, I kept trying to share from the app and that gave me trouble. The G+ group link is here, https://plus.google.com/communities/102908788212710276577 . Sorry again for the trouble but I think some of you really may like this app!
[MTCB Android Head Units Q&A] Enc0der:
Thanks for the info, I was waiting for this...

If the boot up time is the same as the dual-core, that's too bad :(

I guess I will soon get myself a dual core unit, unless JY will also release a similar quad-core version for their J-8813-7 at the same price... (they make the best VW 7" unit buttons-wise IMHO)
[MTCB Android Head Units Q&A] Enc0der:
Why would you want that...? I think "Phone" should be for BT...

Can we set a custom media player (poweramp...) to the "Media" button?
[MTCB Android Head Units Q&A] DJCannonball:
Indeed, i'm not opening my unit until my seller says I can.

I guess they won't answer over the weekend. So I have to wait.

If they want to fix it theirselves, I probably will have to wait another 9 weeks or so (back and forth to China) i'd be happy to place a fan myself. But want to keep warranty
[MTCB Android Head Units Q&A] Petrows:
This is a nice radio program to listen streams via internet. I did not use it by myself, but had a plenty of requests to add support of it. I had tested it and noticed that it is really nice :) Good choice for users want to listen radio and had less/low quality on-air radio in his region.

What is the problem: this app ignores standard android media events and switching algo uses direct inject command to start/switch service via am tool and root rights. Check out the file appcontrol/ControllerPcRadio.java for details.

---------- Post added at 11:16 PM ---------- Previous post was at 11:08 PM ----------

User Jo De Boeck (who initially made this patch) commented that in his car there is a build-in bluetooth and this button is not used. His patch was approved in the app and feature is added to the main list. So, i think that the best plan - is made standard control for binding any key to run the music app. But it would be possible then this control will be implemented :)
[MTCB Android Head Units Q&A] typos1:
Really ? I dont think I ve tried it myself but its only sposed to be the GPS slot that does it, that may well help the person who mentioned it, I think his SD slots are broken.

Why get a dual core, quad core is better, even if the boot time is the same, 25-30 seconds really isnt that bad, I m sure you can live with it !

They clearly aint gona sell the quad core at the same price as the dual core though are they ? ! :)

Well theyve got all the info now as I edited my post, cant tell direction as its not in the car, the battery is out charging and not got my external power supply with me at the moment.. Yep its 2 wires, red n black.

I m sure Klyde would sell you one if you asked or you could try putting some copper grease in the bearing, that would probably quieten your existing one.

There is also a DVB-T card with just one pigtail as well, got one of them also but no good for moving signal.

They will most probably want to send you the parts rather than you send it back, I dont think a fan will help though - no one else has reported the issues you have. TBH I think you should send the unit back to the seller, DO NOT pay for it as it is faulty.
[MTCB Android Head Units Q&A] Petrows:
There is no magic in this =) The problem begins in the pcardio's manifest. It does not exporting services and does not listen any external intents and events. So, am just tool to call some some android api (command to start music player service with "some options" like start/stop/next, etc) that normally is not allowed - there is an security exception raised.

Run whole userspace-app as root is not possible in Android (in normal way), a i know.
[MTCB Android Head Units Q&A] Enc0der:
Because the performance of the dual-core is not bad at all (aside from the annoying 25 seconds boot time), the units are already well tested, and I love the buttons layout of the J-8813-7 (link) that has real buttons for all the needed apps: DVD/TV/RADIO/MEDIA/NAV.

It's actually the only unit I saw with this buttons layout, and right now I don't know about any quad-core plans for JY anyway....

That's what I thought as well, but the ebay link posted here for the quad-core unit shows a very similar price range to the existing dual-core units...
[MTCB Android Head Units Q&A] typos1:
The dual cores are ok, some people have said they are not good at playing music, running the sat nav, recording video and using the phone all at the same time, quad cores will multi task better and are generally more up to date, most mid to high end Android phones are now quad core at least.

The quad core units are EXACTLY the same as the dual core units apart from the SoM (the small approx 6cm x4cm board that sits on the motherboard of the JY units) which is an RK3188 one, even the software is the same, this is why we dont really need to start a new thread for them. I think if you wait then Joyous will indeed make a quadcore version of the unit you like.

If they dont you could probably just buy an RK3188 SoM and fit it yourself.

But I would just wait a few months and see.

The price is similar, but it IS more.
[MTCB Android Head Units Q&A] echudoba:
Actuality, the Quad Core RK3188 I got last week had a web site that had a make offer button on it. So I offered $20 less and got it for $10 less. Shipping was $20 and received it in 3 work days from China (DHL/EMS).

My biggest issue at this point is the occasional hang up of the spinning android emblem on boot up. Once in the last 4 days and a total of 7 since I got it. I'm hoping it is car related like a glitch from the starting of the car. I've been quick starting the car so I don't drop the power to the ACC Lead during boot or waiting 25 seconds and then starting the car. Now I will add not putting it into reverse during the boot process. Try each of these for a given time and see what happens.

Also waiting for new firmware from seller.
[MTCB Android Head Units Q&A] typos1:
The MCU is active before Android partly so you CAN put it in reverse and view the cam before android boots, the MCU is separate from Android so hard to work out whats going on here, I d guess its to do with your car rather than the fact that its the quad core one.

Incidentally Pumpkin have a couple of videos of the quadcores and one has a different launcher to the dual core one, without the widgets for radio etc, the other looks EXACTLY like the dual core ones, which do you have ?

Be interested to see if you get the exact same firmware as everyone else's dual core versions.
[MTCB Android Head Units Q&A] echudoba:
My original post #10582 gives the system about info.

The launcher is just like the duel cores. Back up camera will not work on most hangs. A couple times it reset and came out of the hang up on its own. Other times it took a hard reset. Pulling over and turning off the car for a minuet will do a restart. I been backing up during a boot time and seen some hesitations in the video. I'm just going to get more facts as I use only one of the start up options I mentioned above.
[MTCB Android Head Units Q&A] typos1:
Right, ok so the video of Pumpkin's I ve seen with the different launcher may have been a beta or just an app.

It should work with ANY of the start up options, so lets hope the firmware improves it, I spose there is a possibility its the way its installed, what car have you got ? No CAN Bus adapter ?

Dont follow your comment about system info.
[MTCB Android Head Units Q&A] Enc0der:
Is this the one?

http://www.aliexpress.com/item/Rockchip-RK3188-BGA-main-chip-CPU-Tablet-PC/32252255272.html

just a $10 chip?

Is it easily removable like a PC CPU? or is it connected directly to the main board?
[MTCB Android Head Units Q&A] pbiggane:
Witson A6913 KK 4.4 and Steering Wheel Controls (SWC)

Hello,

I recently purchased a Witson A6913 for my 2006 BMW 325xit (E91). The seller on Alibaba shipped the unit almost two weeks late and has refused support of any kind, except directing me to videos on youtube, they also sent the wrong camera for the rear and wouldn't send the correct one. The unit uses the same hardware as all of the other A9 units and came with KK 4.4.4.

The unit itself works fine, except I've lost steering wheel controls. It came with a canbus adapter labeled BMW 3.0, and I think it works. When I put the car in reverse it senses this and displays the rear camera. I've tried everything in factory settings, none of the canbus options (BMW UNION/BMW ELECTRONIC) allow the steering wheel keys to be recognized upon programming them under tab in settings. I had audio issues at first, but realized that one of the pins wasn't secured into the quadlock fakra connector. The unit came with a plug and play quadlock adapter.

-Should I try updating firmware? I've attached an image of my current firmware under "about machine"

-The car uses canbus, can I just bypass the quadlock and wire the car directly to the canbus adapter?

Any advice would be greatly appreciated. Thank you!

I'd stay away from this seller:

Witson electronics (I can't post link as I'm a new member)
[MTCB Android Head Units Q&A] typos1:
Your unit is not a Witson, Witson are just re-sellers, yours is a new manufacturer of these units - "MX", I m pretty up on these units and I ve not heard of that make before.

I wouldnt bypass the quadlock, I d try a factory reset first and see if that helps.
[MTCB Android Head Units Q&A] clearchris:
What you found is a BGA, ball grid array, chip. Thats not doable without some advanced level equipment. That said, at least for the kld units, there is a rockchip assembly that plugs in via an adapter that looks similar to a laptop old style minipci slot. I dont know if those are available.
[MTCB Android Head Units Q&A] alsolh:
Dears,

i have the AN-1101 u model from roadmaster, i checked in antutu it says it has exynos CPU, can i use your 4.4.4 roms on this device?

http://www.roadmaster1.com/product1.asp?nid=755
[MTCB Android Head Units Q&A] ESTIMULO:
Have you information about climate when you change the temperature or open doors in your screen?
[MTCB Android Head Units Q&A] ESTIMULO:
Thank you very much, have you learned how to remap hardware buttons in ours HU?
[MTCB Android Head Units Q&A] Petrows:
Headunit service beta 2.12

* Fixed pause button control

+ Added PowerAmp direct control (no "stock" player should be appears while media switch)

Downloads 2.12

+ Application page on Google Play

+ My website storage (+older versions archive)

Headunit service beta 2.13b1

* Rafactored root session handling.

Please, test this version for correct root rigts requesting and app crashes.

Download Headunit service v2.13b1
[MTCB Android Head Units Q&A] typos1:
Thats a CPU Enc0der, and its very hard to do, as clearchris says.

All units have a SoM mounted behind the screen or on the motherboard for JY versions, its a System on Module, basically the Android part, CPU, RAM etc, they swap this for an RK3188 one on the quad cores AFAIK. Radxa use a similar thing for their RK3188 and RK3288 Rock dev board, see pic below.

It looks like you could just swap it out for an RK3188 one or even an RK3288 one, simply loaded with the same software for the dual core units (I ve been told the software is the same for both). I think I remember findinf a Radxa Rock2 one like in the picture for about $50. But note I say "looks", it may not be that simple. Be good to have an RK3288 one if it was though - 1.8Ghz, overclockable to 2.0Ghz, can get 4GbRAM versions.
[MTCB Android Head Units Q&A] typos1:
Not, obviously not if the cpu is different, didnt know Roadmaster were making units with Exynos CPUs now though.
[MTCB Android Head Units Q&A] pbiggane:
Hi, thanks for your reply. I did apply a factory reset, but I think the can bus adapter could possibly be defective, I'm going to attempt to contact Witson again, but they have been replying with generic responses. I also pulled the negative cable on the battery for about 30 minutes in an attempt to clear any settings of the canbus, oddly the head unit kept it's memory, so I assume their is some sort of bios/cmos battery in the HU. By A9 I was referring to the processor (1.6GHz, 1gb Ram, GPU, etc).

---------- Post added at 01:18 PM ---------- Previous post was at 01:14 PM ----------

Hi, there is actually no apps or tabs under settings for climate or door configuration, I assume the HU is capable of this because of the can bus adapter, but there are no software options preinstalled, maybe it's possible to install software from the repository to achieve this? I'm not sure if it's possible to pull the android firmware via adb, but if so, I could upload it so others have access to what appears to be the latest HU version of 4.4.4.
[MTCB Android Head Units Q&A] kjettern:
I just thought I'd give u a update about my wifi problem on my KGL 1024x600.. I had a problem with my wifi just suddenly dropping to 0 reception and not working even if my cellphone was tethering just 1 foot away. What I did was open my unit and check the soldering points. I also cleaned some solder spill from the board and moved the antenna a little bit more horisontal. I also came across a screw that was very close to a small chip close to the wifi. I decided to remove the screw, and put some insulation tape between the chip and the screw so nothing would shortcut. (see pic)

After doing this it works flawlessly. Don't know what did it, but I think my unit has a better chance of living a long life now :)
[MTCB Android Head Units Q&A] dark alex:
1) Check Settings, GPS, Select GPS App (iGo) and set the system to mix sound

2) try to open the realtime info. does it show something?
[MTCB Android Head Units Q&A] cat2115:
I use to have AN-21U unit but now is no good. Screen just plain white. I think it;s the motherboard. But anyway, in an AN-21U there's a setup in the unit for bluetooth phone speaker. Setup can be front, rear, or both. Is there any way HuFei unit can do that or hack. Currently, the incoming voice is going to my Subwoofer and I can't hear anything. I would like to go to front speaker. thanks

---------- Post added at 08:50 AM ---------- Previous post was at 08:43 AM ----------

I tried your MTCAutoLoud.apk and it's not working. Maybe I did it wrong?? I just install the apk. Then go to setup to put a check mark on "Loud" but after a car engine restart, the check mark did not stick.

http://xdaforums.com/showpost.php?p=53463910&postcount=963

Thanks.
[MTCB Android Head Units Q&A] avantissimo:
I too do not work :(
[MTCB Android Head Units Q&A] dark alex:
I'll check and repair as son as possible.
[MTCB Android Head Units Q&A] Mister-Z:
I've could root with the method of the wiki. Thanks.

I've installed Viper audio and I've used super quality audio driver. The audio quality has improved greatly, is recommended use it.

I have to find a way to stay active when the radio switch on.
[MTCB Android Head Units Q&A] pakidermo5000:
Try with tasker, in the first post there is how to.
[MTCB Android Head Units Q&A] pakidermo5000:
Glad to hear you could root it. I will try viper audio.

What do you mean by : I have to find a way to stay active when the radio switch on ?
[MTCB Android Head Units Q&A] J0sh_FG:
He means the Viper Audio app closes itself every time you switch off the radio. It doesn't initiate itself by default. He's using Tasker in order to achieve this.

Cheers
[MTCB Android Head Units Q&A] tcfuk1962:
1) Tried the two settings (switched and mix) and with GPS monitor on and off, makes no difference

2) Could you tell me where the RealTime info is, please or how to access it.
[MTCB Android Head Units Q&A] cat2115:
Do I need to use Terminal to enter those command or it's in some where Tasker? Sorry I don't understand.

And is this the one https://play.google.com/store/apps/details?id=net.dinglisch.android.taskerm
[MTCB Android Head Units Q&A] podge3:
Same here.
[MTCB Android Head Units Q&A] kvantum:
Hey, that's gotta be the same guts as the unit I bought! Still waiting for it to come in.

http://www.aliexpress.com/snapshot/6125852577.html

I was wondering earlier if it was a HuiFei clone. I guess this settles it. It's good to hear you were still able to root it.

Perhaps we can start a new thread once few more people get the same thing.
[MTCB Android Head Units Q&A] kwalsh24:
I agree with your last line, I dont believe my seller has a clue. He keeps saying I dont need a canbus adapter as my car doesnt have steering wheel controls, and insists that I plug in the bypass line even tho I told him numerous times that this will just cause battery drain as both the radio and my amp connected to it remain on.

The only other solution I found to try to bypass that red accessory line is a royal PITA to do, as it involves having to remove my steering wheel, to be able to take the screws out of the bezel that goes around the steering column to gain access to the power harness at the key.

So annoyed. So a heads up to all you VW owners, that there will be this glitch that you may or may not want to have to deal with. So far its been nothing but a headache for me. As I do need the power on at key to be enabled and not fluctuating on and off like it does.

I was sitting in a parking lot talking to the girlfriend with the key off but not pulled out after having the engine on, the radio randomly cam on and off 5 times for 30 seconds.

Im debating on removing the canbus and installing another one. However I feel its not right that I paid 500 for a radio and that its not fully functioning with the advertisement of it being compatible with my vehicle.
[MTCB Android Head Units Q&A] pakidermo5000:
You need to create a Task, and Create a Profile that calls the task. Follow this:

The profile describes the event that needs to happen, to call the Task (in this case, the task is set loud).

First create the task. It is in xml format in the attachemnts.

0- unzip file in the attachments.

Open Tasker

1- got to Tasks tab.

2- " long tap" Tasks --> a window will appear.

3- choose Import. and import SetLoud.tsk.xml

Now, you have to create the Profile

1- go to profile

2- create new profile

2.1- choose: Event -->System--> Device Boot

2.2 Go back. a window with names of Tasks will appear. Choose Set Loud.

Done.

Make sure the profile is "On".

Reboot the unit and check whether Loud is set after boot.

-- Update 21/06/2014 --

File updated.

Run the task alone in order to check whether it woks (press play button insde the task) . Or write the code in a shell terminal
[MTCB Android Head Units Q&A] pakidermo5000:
Hui Fei is the first 4.2.2. Many people is having problems with the CANBUS, not for complicated stuff, but just to power on the unit. So, you will not get any info of you car on the unit.
[MTCB Android Head Units Q&A] as_estsn:
Has anyone found a way to communicate with can bus?

I have one of the more recent Hui Fei android head units. I've rooted it and installed a full Debian build using Linux Deploy (excellent app btw)

I am trying to figure out how to communicate with the car's can bus. So far I have determined that all of the external buttons on the faceplate, and all of the can bus inputs from the steering wheel and the headlight go to /dev/ttyV2. However, I haven't been able to figure out what these messages actually are. Running "cat /dev/ttyV2" produces output that looks like ".�^.�]" when buttons are pressed. I've tried a number of configurations to try to get something readable out of this.

Does anyone have any suggestions, insights or information on this? So far I've found nothing in my searches.
[MTCB Android Head Units Q&A] KeiserSozeyFr:
Hello,

In fact, I was not able to know properly if music is playing or not, I can just detect when play state change.

So, when the unit boots up, I cannot know if what is the play state until this state changes.

When the service starts, I start playing the music and admit the current playing state is "playing".

The problem is : if music player already auto-play the music, my app send a play signal and it toggle the state to pause !

I attach a new version without auto-play feature. But, at start-up, I think the next button will not work as expected. It will toggle pause / play every time you will press it until the track will change (by pressing poweramp interface button or when current track will end).

In the gui of my app, you will be able to see the key codes of the pressed buttons (will be useful for developers).

I will work again on these issues when my head unit will be fixed.
[MTCB Android Head Units Q&A] KeiserSozeyFr:
All I can say , seeing the code of MicrontekService, is that the baud rate seems to be 38400

I think you have to get the ascii codes of the received frames and analyse what happens when you press buttons.

Good luck !