yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units General] cranbiz:
Ordered one of these thru Amazon direct from Joying on Tuesday. Not prime elegible and opted for the free shipping. The delivery time to the US was supposed to be between April 1-15. I needed to go out for a bit today and when I got back, there was a package on the porch from Joying. Yes, it's here. RH3188 7" screen. 1024x600.

Now waiting for the ISO harness, OBD module, BU camera and mounting kit. All of those were prime and not scheduled to be here until tomorrow. Guess I know what I'm doing this weekend.

Should I just go ahead and do the bluetooth mic mod or try it first?

How is Mal's latest rom? Stable? It's got a lot to like in it.
[MTCB Android Head Units General] voldemarz:
Hey, guys!

I recently bought CarJoying JY-UQ130. I have installed it, but haven't had much time to play around. One thing though that almost immediately popped up is limited 1 GB partition for apps. I got it all occupied after installing 10-15 apps. How are you getting around this?

Also if it fails to connect to my Vgate iCar OBD2 scanner. After some searching I found this XDA post claiming that OBD2 scanner name must be OBD. Can anyone verify this? Is it enough it the name contains "OBD"?
[MTCB Android Head Units General] gk66:
For the 1GB problem either root the unit and use link2sd to store apps on an external card or flash a custom rom with fuse support like Malaysk Roms that allows access to all internal storage for apps.
[MTCB Android Head Units General] SurferJon:
I'm having an Accessibility options issue. Apps like Autoinput and some voice recognition apps won't appear in the "Accessibility" settings page so I can enable them. Did I mess something up with my unit or is this default behavior?
[MTCB Android Head Units General] pa.ko:
Look inr SW threads. There are modded stock launchers with stock widgets moved to last page, so on home screen you can put anything you like.
[MTCB Android Head Units General] voldemarz:
I have the same issue with with LastPass password managed not appearing. It seems to be removed/disabled in the stock ROM for some reason.
[MTCB Android Head Units General] SurferJon:
Is the only solution to use a custom ROM? Anyone have any recommendations? I tried using one before but it slowed down the unit's startup.
[MTCB Android Head Units General] Core-Lokt:
You're not kidding about the frustration; I went through that with steering wheel controls. They kept repeating the same stuff. I never ended up getting the steering wheel controls to work. They won't help, anyway. They claim they can't find my order number (from Amazon), even though I gave them the purchase information. I've been using Malaysk ROMs since January and am quite happy.
[MTCB Android Head Units General] SurferJon:
The Malaysk ROM I used slowed down the unit's startup. I also didn't like its GUI, didn't look as professional to me as the stock ROM's. Is there only one version of the Malaysk ROM everyone uses or multiple ones with different options?
[MTCB Android Head Units General] Core-Lokt:
It seems about as speedy to boot as stock..maybe you had an exceptionally large amount of stuff starting on boot?

The latest version has JY, KGL, KLD and Next Launcher, so you can try them all. I am used to KGL, so I kept that. I couldn't deal with KLD appearance/function.

EDIT: Oh, yeah, the font is not Droid or whatever it was before. It's some serif font I'm not really liking-and it seems there's a number that also don't care for it.
[MTCB Android Head Units General] talroot:
I had to use a decoder box wired into my harness and the head unit because my truck uses canbus. I have most of the steering wheel controls functioning but there's oddities when binding the keys for some reason. Some of keys end up doing the same function even though they're mapped differently via the head unit. They also come unbound when binding other keys to different functions for no apparent reason at all. I do have my volume, seek, and source working correctly so I'm happy enough with that.

I tried Malaysk Rom last summer when I initially installed the head unit. I had even more issues with the bound keys and that rom for some reason so I flashed back to Joying stock. It seemed like there was something else that wasn't right with Malaysk and Joying head unit but I can't remember what that was. I knew going into this the steering wheel controls were going to be questionable but stuff like resetting clock formats and lost application data weren't expected. I wish they would be more accepting of some of these issues so we can figure them out together. I feel like their attitude is there's no way there's anything wrong with the device and it has to be user's ignorance or something the user has done to cause the problem.
[MTCB Android Head Units General] Core-Lokt:
I agree that they think their product is infallible and errors are the purchaser's fault. But they still are unable to help because they are basically just modding software and pirating apps; nobody there has troubleshooting skills. Rambo and Bella were the two that said they can't find my order and ignored my proof.

My truck ('05 Dodge) was the last year before canbus. I even documented the install on a forum and sent Joying the link to see pictures and read in-depth commentary on issues. I even used an ASWC-1 and couldn't make things work (I won't list the steps). Even Metra and Crutchfield conceded I did everything right. I actually did get one button to map, and it didn't even work-and that was an accidental discovery.

Yeah, there's a few glitches with Malaysk ROMs. He probably puts too much stuff in there, anyway, just to make everyone happy. But at least people here are working to improve the pretty-decent-but-flawed product and help.
[MTCB Android Head Units General] SurferJon:
I just installed the Malaysk rom again and now I can't use the steering wheel keys to skip tracks in Playerpro, my go-to music app. The steering wheel keys worked perfectly when I originally used the rom and when I was using the stock rom. The settings are all correct too in the Headunit app. I don't know what to do. Oddly the steering wheel keys work with the default music app, just not my specific music app. I'm using the exact same version and settings I've used the entire time too.

I also consistently have an issue with Tasker not being able to set the brightness. Anyone else have this issue? What do you use to set the brightness?
[MTCB Android Head Units General] SurferJon:
Oh, looks like Jet Audio Plus was interfering. After uninstalling it, Playerpro works properly.

Some questions I have....

1. Is there a way to disable the visual "theme" Malayask has over his rom? I'm referring to the fonts, the light blue gradient windows/buttons, and the multi-colored loading bars. Is there a way to turn them off and use the default visual theme/fonts that came with the Joying unit? I feel like the theme he uses makes the unit look much more amateurish.

2. How do you guys set your screen brightness at specific times of day? I'm getting mixed results with Tasker.

3. What plugins do you use with that XPosed framework thing? So far the only one I'm using makes the volume bar look like an A/V volume bar.
[MTCB Android Head Units General] ssanmor:
Problem with radio lack of treble

Hello,

I have just recently purchased a RK3188 800x600 radio with DVD (the one with two knobs at the bottom) and installed it on my Saab 93 2007.

Everything works about fine, but I have a major issue with FM: it simply lacks any treble. In page 49 of this thread I have read that this is something that can be fixed by changing some resistors. I am good at SMD soldering, but can't find the image that describes which ones to change.

Can anyone point me to the right thread to solve this?

I also don't like that no contents can be played in the external monitor/s unless they are played from a DVD disk. Can I at least save some .avi or .mkv files in a disk and play them in my headrest monitors this way, is must it be a real DVD disk?

Thanks!
[MTCB Android Head Units General] themissionimpossible:
Only DVD with a real DVD structure, not data DVD containing video files.

About the hardware modifications see if this is what you're searching for:

http://xdaforums.com/android-auto/m.../mtc-sound-controlling-bd37xxx-sound-t3234660
[MTCB Android Head Units General] ssanmor:
Thanks for your reply.

That renders the external screen quite useless.

About the hw mod, no, that's not what I am looking for. It is about a couple of capacitors to be changed because it seems that the hardware is bad designed and there is a low pass filter that is designed to cutoff anything above 1kHz or so, but simply replacing those caps is enough to restore treble. I seem to have found something about that, but any feedback is welcome.

It is interesting to know about the external mic mod, too. Worths a try!
[MTCB Android Head Units General] popeye70:
Hi ssanmor, maybe you are looking for this?

http://xdaforums.com/android-auto/m...od-radio-frequencies-filter-fix-kgl4-t3279439
[MTCB Android Head Units General] ssanmor:
Yes, that's it. Thanks!

I will definitely give it a try, as FM quality is a major drawback of this unit for me.
[MTCB Android Head Units General] ssanmor:
Thanks, guys, you have been super-useful.

I tried the FM mod today and now I have recovered my FM treble!

I also took the opportunity to separate the external and internal mics and still have to test it, but what's for sure is that I haven't lose Android phone because I can still use Google Voice search or Shazam. Let's see how the Bluetooth mic works now.

Really useful stuff here....
[MTCB Android Head Units General] Telemachus:
I wonder if we input a video source, if the outputs will mirror it.

Are you buzz free after your mic mod? Mine is about 80% improved, but the first moments of a hands-free call is is still a swarm of bees.
[MTCB Android Head Units General] nixfu:
Hmm, that could be a grounding issue. Maybe try to double check your ground connection.
[MTCB Android Head Units General] skange01:
This has been VERY helpful! Thank you!

Have you used the iPhone/android phone mirroring feature advertised on the carjoying site? Curious how that works and if it allows access to all the apps installed on the phone. Also - still have not purchased this unit, but have narrowed my choices down to this one and the newsmey nu3001. Do you have any experiences or opinions between the two? Thanks again for your input and help!!!
[MTCB Android Head Units General] Telemachus:
Interestingly I noted that the SGND on the Bluetooth module had complete continuity with GND. I used the one furthest from the L and R. I would imagine those grounds are supposed to be separated somehow?
[MTCB Android Head Units General] nixfu:
I don't really have any buzzing going on, but the sound quality is pretty poor.

But it could be because I am just using that cheap external mic that came with it. I know some people have mentioned upgrading their microphone as well.
[MTCB Android Head Units General] Telemachus:
It baffles me that SGND is continuous with the regular GND. I am thinking of cutting the SGND post just to see if that accomplishes anything.

if I switch the phone that is connected via Bluetooth to speaker phone, and then back to blue tooth again, that is when the buzzing is loudest. It only lasts about 10 seconds, or goes away immediately if you talk into the microphone.

I'm stoked that the newest Joying FW has a version of google voice search that actually works. I used Titanium Pro to remove the one that comes in Malaysk ROM, and Aptoid to install the one that comes with the Joying FW. Seems to work well, although no "ok google" from the home screens.

Have you tried attaching it your car yet? The dimmer knob in my car does nothing to the radio nor button brightness.
[MTCB Android Head Units General] CPT_Tater:
Is there a way to utilize Bluetooth tethering by using a application like FoxFi yet? Would I be able to buy an external Bluetooth dongle and get it working? That's the ONLY think keeping me from pulling the trigger on an Android HU.
[MTCB Android Head Units General] TOMMYX2:
have you found a shielded wire with socket?

what have you done with the internal mic?

I would like make this fix too and i hope with good results with my Parrot Mic:

Parrot MKi9200 MKi9100 MKi9000 Dual Microphone with Mounting Brackets PI020106AA

[IMG="Parrot MKi9200 MKi9100 MKi9000 Dual Microphone with Mounting Brackets PI020106AA"]http://thumbs1.ebaystatic.com/d/l225/m/mBV1N1krN3ww7CLCsWiRvLA.jpg[/IMG]
[MTCB Android Head Units General] Telemachus:
what I ended up doing was unsoldering the external mic socket from the positive and negative points on the front of the PCB. After cutting the traces on the board to the Bluetooth module, I soldered the yellow wire to the mic+ . I connected the ground wire to the GND on Bluetooth module. Then I wrapped the entire cable with a super fine wire, and soldered that to SGND. I'm still using a microphone that came with the unit, and installed it in the car. So far, no complains from many calles.
[MTCB Android Head Units General] TOMMYX2:
Here is a video from the inner life :

https://www.youtube.com/watch?v=Eo8WcXhZWpY
[MTCB Android Head Units General] skange01:
Nice! Thanks!
[MTCB Android Head Units General] TOMMYX2:
ok great thx for your tutorial.

One question:

Can i use a better Cabel like thin one for the Mic Input?

Must the Cabel be Stereo or Mono 3,5mm?

http://www.ebay.com/itm/deleyCON-PREMIUM-HQ-Stereo-Audio-Klinken-Kabel-3-5mm-Stecker-zu-Buchse-1-5m-/400641421900
[MTCB Android Head Units General] Telemachus:
I continue to be impressed by the aftermarket support and tutorials that this company provides. Putting the screen under the unit while you attach the ribbon cables saves a huge headache!
[MTCB Android Head Units General] mixmike6:
I love this HU but can't figure out why the bluetooth music quality is so terrible :(

It has a weird static to it - Anybody else have this issue?

Also how can I change the dashboard? I really like the KLD type.
[MTCB Android Head Units General] Telemachus:
I just discovered the "bluetooth" app yesterday. Sounds quality from my phone is awesome.

Love the sound quality all around.
[MTCB Android Head Units General] dviperbigt:
what bluetooth app?
[MTCB Android Head Units General] Telemachus:
The one that is called "bluetooth."

:p

Maybe it is only on the Malaysk rom.
[MTCB Android Head Units General] noDaveu:
If you have a second - I have already installed my radio and not keep on taking it out just to look at the wifi connector. Will I need to completely remove the wifi cable and solder in a new one, or can I just slide the end of the cable into a RP-SMA jack, or is there some sort of special tools needed to properly attach an external antenna? Thanks.
[MTCB Android Head Units General] nixfu:
Well, I am amateur radio operator, so I have the tools to properly crimp and install a connector.

The 'alternative' is if you are good at soldering, is just purchase a small rp-sma extension cable cut it on the other end from the rp-sma jack to the correct length and solder the cut ends to the board where the existing cable is soldered to.
[MTCB Android Head Units General] Telemachus:
Where exactly are you gents trying to pull wifi from? My phone with hotspot is IN THE CAR with me, and the stock antenna works great.
[MTCB Android Head Units General] popeye70:
Have you changed only capacitors or also the resistors, like described in PDA forum guide?

Inviato dal mio GT-P7500 utilizzando Tapatalk
[MTCB Android Head Units General] ssanmor:
I only changed the capacitors. There was a RC filter with 6K2||10K and 33nF, with a cutoff frequency of approx. 1.25KHz. Now I have put 1.5nF that gives a cutoff frequency of 27KHz, so it lets the whole 15kHz audio bw pass to the amplifying stage without altering the pass-band original gain (that would happen if you alter the resistors).
[MTCB Android Head Units General] ssanmor:
Hi all.

I can confirm that the mods gave the desired result, now FM is as clean and crispy as it should be.

The Bluetooth external mic mod also improved quality. Very nice, useful tips here!

However, yesterday I had a problem with the unit, one of the times I started it, the knobs didn't respond (this has happened 2-3 times since I have it), but this time, the steering wheel controls didn't work either. Even the backup camera didn't trigger the screen. It seemed as if par of the user interface was frozen (tactile screen responded and the buttons at the sides also, though).

After powering off (manually), waiting some minutes and powering ON again, it worked fine.

I have read your suggestions related to vol. knob not responding, then checked my Factor Settings and Wheel3 parameter is disabled on mine, so don't know what else to check ¿?

All the times this has happened to me, I was tethering Internet with my iPhone. Maybe this is related?
[MTCB Android Head Units General] TT_Vert:
Guys, if you have a resistance matrix SWC setup in your car, can you connect that wire directly to key1 or key2 and then program? Or do you still need an adapter between the SWC and the HU? I'm getting conflicting info on this.

Thanks much

Dave
[MTCB Android Head Units General] Core-Lokt:
I'd like to know, also. In fact, I'll ask again-anybody with a 2002-2005 Ram pickup with functioning SWC, please detail what you did. I've got one wire to work with in the harness and Joying said it would work with either Key1 or Key2.

That said, I'll tell you my experience. Long story short, I couldn't get anything to either program or function. I did have an accidental discovery where I was able to save one function (VOL DN), but it wouldn't work. And I tried an ASWC-1; I think I wrote about it here, if not I detailed it on Ram Forum. No difference. Even re-programmed the ASWC-1 as per Metra instructions to Pioneer/Jensen and Metra OE. They confirmed I did it right. My truck is the last year before canbus, and Joying said an interface wasn't needed-and later they said they don't know what one is.

I've seen where some vehicles have two wires in their factory harness, but my truck has only one. And on some radios (Pumpkins, IIRC), there is an additional ground wire that goes with Keys 1&2 which is not on my JY-UQ128..maybe any Joying HU. Rambo with Joying kept blathering on about "you need to ground". Ground what? The HU is grounded through the ISO harness back into the factory harness adapter, and there is no additional ground like on the Pumpkin HUs. I even ran a ground jumper to Key2 while Key1 was connected to the harness. I finally gave up.
[MTCB Android Head Units General] TT_Vert:
Well that's not good. In this blog they are using a resistance matrix SWC connected right to the unit but the unit had 2 inputs and the ground so I don't know if that was part of the reason. My car only has 1 feed and the ground so I don't know how well this will work.

Dave
[MTCB Android Head Units General] Core-Lokt:
Yeah, I saw that video with the bare boards. I even ganged Keys 1&2 together and to pin 14 in my harness..no joy(ing).

What is your vehicle and have you searched on vehicle-specific forums? Me, I tried every Ram pickup or applicable Chrysler forum. If anyone has one of these HUs in a Mopar, they never say HOW they got SWC working.
[MTCB Android Head Units General] TT_Vert:
its a 2013 kia optima, i did search and not much info. i'll give it a go and report back as it "should" work.

Dave
[MTCB Android Head Units General] TheCleaner:
Since there doesn't seem to be a default setting for this in the Security settings...

Does anyone know of an app I can use to lock the unit completely for when I need to take my car in for service? I'll be leaving it there for a few days and don't really feel like removing the head unit completely.

I thought about a simple switch behind the dash for the red/ignition wire to disable it, but would rather not if a simple app will take care of it.

I'm concerned about the service center seeing things like Gmail, etc. It would be awesome to have a "valet mode" or just an unlock code when the unit starts up.
[MTCB Android Head Units General] Core-Lokt:
I don't think there's much you can do except configure your e-mail to require a password rather than simply push mail. I'm not aware of anything locking-down the HU, either, even on Malaysk's ROMs.
[MTCB Android Head Units General] TT_Vert:
Just notice something else about the bluetooth dialer. When in a call not only is is last name first without a comma the call icon blocks 3 letters of the last name. Is this typical of all the MTCbluetooth4.apk files?

Dave
[MTCB Android Head Units General] TT_Vert:
Anyone else also have a joying OL-7001? and had any success finding the key mapping of the power and back soft keys on the far left of the unit? I could log volume up/down and home but not the power or back keys. Any help would be appreciated. I'm trying to remap that power button to waze as I will never use the power button but w/o the keycode i'm dead in the water.

Thanks

Dave
[MTCB Android Head Units General] TheCleaner:
Two questions:

1. I've read here about upping the "system" audio to 13 for the pre-amps. But does anyone know what the other audio settings do? Are they really gain or something else? Their customer support wouldn't tell me.

2. Does anyone else have issues in the radio app where it will just randomly jump to odd channels or even to AM instead of FM? Mine seems to just jump around after the latest update at random times.

Honestly, I need to find a way to like this thing. So far the radio has sucked and the audio quality playing music on the SD card out of my speakers even using the pre-amp RCA jacks to my amp is pretty bad. I'm going to try and work out the bugs, but I'm tempted to send it back to Amazon if I can't get the thing to work as well as my stock HU, even with all the extras it provides.
[MTCB Android Head Units General] TT_Vert:
I've tried to play with them, primarily the BT # hoping it would adjust the initial phone volume via BT but it had no effect. I'd be nice if the dang settings were adjustable in real time.

Dave
[MTCB Android Head Units General] Core-Lokt:
No idea, but it seems you had some luck getting the SWC recognized. How did you wire it up? I would be happy just to get basic functions, let alone to map apps to the controls.
[MTCB Android Head Units General] TT_Vert:
I haven't actually but i did do a bit of research on them. This car does not have SWC. Another car does but it is getting a C200.

Dave
[MTCB Android Head Units General] robjg:
I feel that the sound quality from the internal amp has improved a little after rooting and installing the Viper4Android drivers. However, it seems to have broken the Easy Connect screen mirroring app.
[MTCB Android Head Units General] scanner718:
Notification volume

Does any one know how to adjust only the notification volume on the joying unit. When i go into settings and check volume it only lets me adjust the master volume.

thanks
[MTCB Android Head Units General] TT_Vert:
I don't think you can adjust volumes independently.

Dave
[MTCB Android Head Units General] scanner718:
Thanks, Wish it was possible
[MTCB Android Head Units General] TT_Vert:
I'm going to assume at some point it will be as it is on android phones/ etc. Just a system volume vs. ringtone, alarm, etc.

Dave
[MTCB Android Head Units General] Lugi01:
Hi all!

I have a problem with my HU. It wont pass the logo screen during boot up. I even tried rebooting the HU but nothing changes. What should I do next?
[MTCB Android Head Units General] Lugi01:
Ok, a hard reset was the solution. All apps gone. :(