yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units General] talroot:
I've got a new problem as of a month or so ago. My last posts were of the head unit losing data (radio presets, clock format, iGo preferences, etc) after rebooting the unit. This latest issue I have now renders iGo useless. Out of the blue, iGo has stopped working. When I launch the app it looks like it'll start but then gives an error:

Out of memory.

Requested: 1634035812

Cache: 0

The error results in an unresponsive black screen to exit out by hitting the home button. I have emailed their "support" and currently awaiting response. Things I've tried: uninstalling, reinstalling igo.apk, clearing cache, factory reset, wipe data. Installing Malaysk's rom and attempting to reinstall the app yields same issue.

It seems something is wrong or corrupt on the external microsd where igo resides, but I don't know what it is. I found a blog googling the issue but this seems to be caused be something different.

If anyone has ideas, please chime in. I'll post resolution if I get one. I'm hoping they send me the "decrypted" link to download iGo again and reload the maps, but we'll see.
[MTCB Android Head Units General] popeye70:
You can find that link in carjoying website blog messages: https://www.carjoying.com/Joying-blog/13.html
[MTCB Android Head Units General] talroot:
Oh nice, I was looking at another blog that had links that required a passcode to download. They sent me the same links in the blog last night so I'm downloading now and will reinstall.

On a side note, I must say Malaysk's rom is working much better for me this go around. It didn't require any reprogramming within the rom itself for steering wheel controls, which is what i was having issues with before. It also boots a couple seconds faster than Joying's stock rom. I'm liking it along with different radio skins and clock screensaver.

EDIT: ok they provided me with the links to reinstall iGo and maps for Canada/US. Still doesn't explain what happened or why it stopped working, but it works again now.
[MTCB Android Head Units General] jtskir222:
satellite radio?

can satellite radio work with this unit?
[MTCB Android Head Units General] derici84:
hello friends

i have rk3066 hu and i have problem with rear cam . When the hu booting rear cam is not working but after booting( the device on ) cam is working

is there any solition ?

Thanks
[MTCB Android Head Units General] thegametb:
Is this unit USB OTG complaint? Thinking about using a waterproof endoscope as a front camera.
[MTCB Android Head Units General] nixfu:
So, I have ordered the 5.1.1 "upgrade" hardware kit from carjoying for my JY-UQ124. It appears that the main thing is to swap out the front panel/touch screen board based on the instructions (attached).

I will post pics and more info when I receive the kit and perform the upgrade.

It is interesting that they do not seem to be replacing the mainboard/processor etc.. but only the touch screen. That must be the main thing that was incompatible with these units and Android 5.1.1.

I am also wondering if this will actually convert it to a MTCD-type device or not.
[MTCB Android Head Units General] TT_Vert:
That's a complete 180 from the core/motherboard upgrade they were selling as an upgrade for the last month.

Dave
[MTCB Android Head Units General] thegametb:
Weird. I thought there would have been more to this than just replacing the touch screen. I regret getting my unit installed just a few weeks ago lol

---------- Post added at 05:31 AM ---------- Previous post was at 05:28 AM ----------

Not sure with external equipment, but it should if they have a Google Play app.
[MTCB Android Head Units General] llaugerm:
I would imagine when you do this your reverse lights would come on, is that the case?
[MTCB Android Head Units General] TT_Vert:
depends on the circuit design. If the reverse lights are on the same switched hot circuit the reverse signal is on then yes.
[MTCB Android Head Units General] llaugerm:
I recently bought this unit and I installed yesterday and I can't find how to get the offline GPS software that came with it? Is the GPS Card inserted already in the unit?
[MTCB Android Head Units General] tone944:
I've been following this forum topic for a while now, looking for answers to all the problems with the Joying RK3188 1024x600 unit.

Firstly, a big thank-you to Malay, I updated to the Malay firmware and it's MUCH better than the joying software. Joying website says that installing the Malay firmware will break the unit, this is NOT true, It works better than theirs!

I've had numerous emails to joying seeking assistance, but all they do is send standard responses that don't specifically relate to the issues. I've had to explain every issue multiple times, until I've now given up with them. I recommend that people seek a different supplier for these units as Joying are just too frustrating for customer support.

I do think the concept of these units is excellent and it they can be made to work properly will be fantastic, so I'm looking for solutions.

Here's the 2 most frustrating issues, I'm hoping somebody can suggest some solutions:

1. Wifi keeps dropping out. I have a in-car 4G Wifi hotspot powered from the car. It is stable and works brilliantly with my chromebook. With the head unit it drops out randomly and seems to be getting worse as the head unit gets older. I've tried various settings, and various firmware with no improvement. Is there a way to modify the antenna or replace the WIFI chip? Or is the issue something else?

2. Bluetooth audio quality is absolute rubbish. Playing music through bluetooth has noticeable distortion. I've tested, it's not related to my phone, speaker or the unit's amplifier. All my troubleshooting points to the Bluetooth module being rubbish. Audio thought the microphone for making calls or voice searches is so bad it's unusable. I've tried the microphone modifications detailed in the discussion, but still get terrible interference. It's not phone transmitter interference, or car power interference, it's something else. Is there any better bluetooth module that can be easily fitted? I recall some discussion about a different bluetooth module in this forum, but I can't find it again. If modules are available, where can parts be sourced?

If there is no solution to these issues, can anyone recommend a supplier of a better quality Android head unit? (I'm ready to throw this one away!)

I'm hoping this will raise discussion that helps others too :)

Thanks in advance,

Tony
[MTCB Android Head Units General] CARRisma:
Have any JY owners tried the 20160223 firmware update from the carjoying website - https://www.carjoying.com/Joying-blog/12.html

Is it any good? Any problems?
[MTCB Android Head Units General] TT_Vert:
It will break the MTCD devices, not MTCB.
[MTCB Android Head Units General] chipyy94:
Hey, could somebody give me advice with which programs could i control subwoofer on my head unit? I have malaysk rom installed and i think that nothing helps. I have subwoofer connect to RL and RR (rear left and rear right). I already tried in Sound apk and in jetaudio , but i cant hear any changes. Tnx ;)
[MTCB Android Head Units General] SilverS4sAreFaster:
This is old but I noticed a lot of notifications on here quoting this so here is what happend, I did end up getting it to work!
[MTCB Android Head Units General] tone944:
I think I may have found a solution to the Wifi issue I've been having...

I'm still testing so this is just a theory, hoping it might help somebody else. I'm trying 2 different approaches:

1. I changed the 4g USB modem so that it's wi-fi channel is set to one channel instead of "auto". I think it may have been optimising which channel to use based on how "busy" the channel is, therefore changing channel as you drive through areas that have a lot of people on certain channels. My laptop seemed to cope with this setting. The joying unit is holding the wifi connection better so far, still not perfect, but much better than it was.

2. I could never get the 4g modem to work as "network" connected via the USB cable, then I stumbled across the fact that wi-fi needs to be switched off for the USB connection to work. internet connection when connected via USB is very reliable only the occasional drop-out when going through a 4g blackspot. I've even been streaming Spotify music with it and it sounds much better than any other music source I've tried with this unit.

Now to solving the microphone issues, I'm ready to give it one more try at getting the mod's to work. Can anybody recommend where to buy a good quality mic that is compatible?
[MTCB Android Head Units General] ktibor69:
Is there possible, that the RK3066 HU with Malaysk ROM recognizers the 64GB microSD card?
[MTCB Android Head Units General] CadillacMike:
is this in the US? what carrier and model is the hotspot?
[MTCB Android Head Units General] isw845:
How do you get network through USB? Is it through USB tethering?
[MTCB Android Head Units General] jbleasdale:
Just a quick note for any Joying owners on the 4.4 firmware - despite Joying claiming that a hardware upgrade is required to upgrade to 5.1.1, this is

not

true.

See this thread for instructions on how to upgrade: http://xdaforums.com/android-auto/m...lollipop-mtcb-units-tested-courtessy-t3389906

I upgraded my Joying HU from 4.4 to 5.1.1 successfully just now.
[MTCB Android Head Units General] etulio:
CAN BUS solder wires in MTCB

As the MTCB board is a generic one used also in the vehicle specific models that have a rear connector CAN Adapters, there should be an internal connector in PCB where CAN lines are accesible, and it should be possible to connect the vehicle CAN wires, and make use of the new functionality in VEHICLE.APK.

Does anybody know where the CAN BUS wires can be soldered?
[MTCB Android Head Units General] Necron8:
Hi there people, so after days of searching around and reading countless posts on these units, I'm still undecided. I found that Pumpkin and Joying stereos still have problems with Wi-Fi, reception, audio quality and so on and so forth. I actually want a stereo that has a nice screen quality, great quality sound and DAB as well as an input to connect an HDMI device which transmits the sound from your car amplifiers etc. Apparently, these Chinese stereos are the only ones which have a resolution of 1024x600, other than that, branded stereos such as JVC, Pioneer and Kenwood still use a resolution of 800 x 480 approx.

So I gathered the following:

JVC KW-V51BTE - cons does not have DAB but I can hook up an android box device to the HDMI, don't know if hdmi transmits touch though - price of around 380eur

Pioneer AVH-X5800DAB - cons. does not have hdmi and have to use an svideo adapter to HDMI to hook up an android box - price of around 440eur

Joying or Pumpkin - cons. Software is slow and loading time is around 30sec max, sound is not the best, DAB needs adapter, no hdmi input, reception problems but already has android and tons of other cool features like gps etc - price inc. DAB around 350eur

My setup is an Audison SR4 - 4 channel amplifier together with 4 Hertz speakers and a Focal Subwoofer, so 3 pre-outs will all be used.

I think since I'm more of an audiophile, I will go with a branded unit although your suggestions would be great! Mostly I would like a great screen quality to watch some videos here and there which will match my current sound setup and ability to hook up external devices if it does not have android. Budget is limited to 450e so I can't go for really new models :/

Sorry for the long post. Any help?
[MTCB Android Head Units General] CoopZor:
So when you step in the car you have to enable wifi tethering in the phone so the car system can have internet? Is there no better way, something automatic?

Verstuurd vanaf mijn Nexus 6P met Tapatalk
[MTCB Android Head Units General] dcdttu:
I have used both Automate and Tasker to tell my Nexus to enable tethering when it connects to the head unit via Bluetooth. Works flawlessly. I prefer Automate to Tasker for this because designing flowcharts is much more fun, and Automate re-enables my WiFi when I exit the vehicle whereas Tasker doesn't and requires additional logic to do so.

You create a new flow in Automate that waits for you to be connected to the head unit's specific Bluetooth, then enable tethering. You add to that flow logic that turns off tethering if you disconnect from Bluetooth. Hope that helps.
[MTCB Android Head Units General] TT_Vert:
You can easily add an exit task for when that BT MAC disconnects. One press and two fields if I recall.

Dave
[MTCB Android Head Units General] CoopZor:
Your awesome, Thanx a lot.

I'm a little bit on the fence with this, I read on the Internet that the stereo is really sluggish, but then on YouTube it seems fast, can you tell me a little bit about your experience?

Verstuurd vanaf mijn Nexus 6P met Tapatalk
[MTCB Android Head Units General] dcdttu:
The stereo is what I would expect from a $250 head unit. It's a bit sluggish at boot as all the services load, but once you're in an app like Maps or Play Music, it's pretty good. I usually have iHeartRadio running with Maps and it keeps up just fine. The microphones don't really work well, so if you're wanting to use this device to make calls or activate Google Voice, I would not buy one. Also, as it's made in China where they don't have access to Google Play Services for testing, Play Services is a little Janky.

I use it for Google Play Music, Maps, Waze and iHeartRadio and it works great. I originally bought a Kenwood head unit for nearly $600 that has Android Auto but was ultimately disappointed in the screen quality, audio quality and price for what I got. With the caveats I mentioned, I prefer the Joying unit over the Kenwood. The only other option that I might consider is a 7-8" tablet that I could use as my entire infotainment system, which I might try in the future.

Hope that helps!
[MTCB Android Head Units General] CoopZor:
You sure did men! Thank u very much.

I think I'm ordering this one, looks sexy.

Android 5.1.1 2DIN Autoradio voor Ford Focus 2 Focus II 2004-2011 met 9 "screen Spiegel Link auto multimedia Stereo SAT nav

http://s.aliexpress.com/zE3IvIV7

(from AliExpress Android)

Verstuurd vanaf mijn Nexus 6P met Tapatalk
[MTCB Android Head Units General] arshish1612:
Hello,

I know this is a very old post however was hoping someone could help me. I have the MTCD_MX Nougat version. I am getting no voltage (0.01) on the preouts. I've gone to Factory setting and cha he the gains but that just increases the high level speaker outputs.

Is there any setting to get audio going to the RCA preouts?
[MTCB Android Head Units General] noDaveu:
I am limited on data on my phone so I pull wifi from wherever I can. The greater the reach obviously the more choices I will have..
[MTCB Android Head Units General] Sacricide:
ive been wanting one with a volume knob, and large easy to press buttons. Capacitive button layout on the other popular head unit in the forum sounds like a headache while driving. glad i saw this, i almost bit the bullet last year on a different brand off ebay, since most look like they all come out the same factory, but it was like 350 after shipping.
[MTCB Android Head Units General] sirob1:
Quick question....does the radio or reverse camera function work while the Android unit is booting?
[MTCB Android Head Units General] jordanow:
reverse camera function should work but not the radio
[MTCB Android Head Units General] DWilks:
Definitely, the backup camera works while the unit is booting. I installed a switch in my dash to turn on the backup camera anytime I want to see to the rear. Very simple to do: Connect a wire to the Yellow (+) 12 Volt wire supplying the Head Unit. Connect the other end of this wire to a 'push on - push off' switch. On the other side of the push button switch, connect the (+) wire coming from the camera and also to the wire labeled "Back" (which is orange on my Joy Unit). When you push the button switch 'ON', (+) 12 Volts is connected to the 'Back' signal wire and also powers up the camera. As long as the switch is operated, the Head Unit will only display the camera showing the rear view(of course you could have the camera facing any direction you choose). I find it very useful to view, on multi lane highways , traffic on both left and right lanes to the rear instead of having to check left and right outside mirrors and the rear view mirror. While your unit is booting, check your 6 !!! I would post a schematic but don't have the required post:(
[MTCB Android Head Units General] mixmike6:
So your telling me your Bluetooth music quality is fine? You notice no significant difference when listening to a song streaming over Bluetooth ?

I'm at loss... I don't get why mine sounds like a song streaming over the Internet in 1995 ??????
[MTCB Android Head Units General] Telemachus:
Works amazingly well, mixmike.

Have you tried upgrading the firmware to the newest on Carjoying website?

I did that to update the MCU, and am now using Malaysk newest ROM.
[MTCB Android Head Units General] RabbidHampster:
I dont own one of these units yet but I would say it could be any number of things. Since I am no audiphile I usually setup a test track and compare my perceived sound quality. Stream it over bluetooth from your phone and see how it sounds then play directly off the head unit and compare. Stream it from bluetooth then compare to playing over aux (headphone jack) input into the head unit. Obviously use the same track while comparing and checking the volume levels on each device for every input method. Bluetooth generally never sounds as good to me but I don't notice after a while.

I don't remember being able to stream songs in '95. As far as I remember most songs had to be downloaded first. Geez, I cant even consider how bad it would have been streaming over my 56k modem.
[MTCB Android Head Units General] lostdude111:
Hi Guys,

Does the DVR allow for both front and rear cameras to be recorded or is it the front only?

thanks.
[MTCB Android Head Units General] TOMMYX2:
I have a Problem,i want to make the Mic Mod but i have damaged my Mic Output Cable.

the Original Cable has 2-wire cables but my Decon Mic Cabel has 3 Wires (Left-White, Right-Red and Ground-Gold)

it is possible to solder the cable with the 3 Wires to the Bluetooth Modulbecause the original has only two cable for Mic+ and SGND.

Please Help,thx!:confused::confused:
[MTCB Android Head Units General] Flemischguy:
Yes you can... Take a multi meter and take the sleeve as - min (last piece of the jack) and the pin is the + plus
[MTCB Android Head Units General] jordanow:
Does another microphone give better sound than the one sent with the Joying HU?
[MTCB Android Head Units General] TOMMYX2:
Yes,the Joying mic is bad!

---------- Post added at 10:37 PM ---------- Previous post was at 10:20 PM ----------

ok thx,i have it now:good:

Gold is -

Red is +

:)
[MTCB Android Head Units General] TOMMYX2:
I have a big Problem and i need some help!

i cut with a blade the trace but i hear from a Bluetooth call my voice from the Front Mic and i hear my with Echo.

I've been through the measured points with a multimeter until the bluetooth module to frontmic or connector on the motherboard and have at + no continuity but with -(SGND) I have always a passage.

What can i do?

Sorry for my bad english:cowboy:

Thx
[MTCB Android Head Units General] Telemachus:
If you hear your voice from the front mic, with no mic attached, then you either didn't cut the trace all the way, or you cut the wrong trace.

SGND has continuity with GND. Don't worry about that.

I never got mine hum-free, but it work's fine.

If the people calling you hear themselves echo, you just need to turn the volume down.
[MTCB Android Head Units General] TOMMYX2:
ok thx

I'm 100% sure,i have made the cut on the board from the top and because it did not work well i have cutted the Trace on the bottom!

What i dont`t understand is:

Why is still the front Mic working because at + is no passage.

Maybe there by the software or codec the problem or is there still a different passage?
[MTCB Android Head Units General] Telemachus:
Did you remove the external mic jack?
[MTCB Android Head Units General] cetrespeo:
Please notice that bluetooth unit profile doesn't comply with Bluetooth PAN protocol, so nowadays it is not possible to link the car unit to internet through mobile phone internet connection. Hope they solve it soon.

Meanwhile, does anyone know how to enable this profile with some tool or software?
[MTCB Android Head Units General] TOMMYX2:
you mean the white plastic Connector for the external Mic? (see Atachment)

i hear my voice only on my Frontspeaker,nothing on Rear. and both Mics the Front and the External a working on the Bluetooth Call.

The other Problem is:

I hear the voice only from the RNS speakers but my opposite does not hear my Voice on his phone:crying:
[MTCB Android Head Units General] Telemachus:
I didn't have that white connector, mine was soldered straight to the board. You can leave it alone. The other person CANNOT hear you at all? Is the mic attached to the bluetooth card? I attached to Mic +, GND. Then the shield is attached to SGND.
[MTCB Android Head Units General] TOMMYX2:
Yes i soldered + to Mic+ and - to SGND on the Bluetooth Card.

What did you mean with "Then the shield is attached to SGND" ?

Gnd and Sgnd (Shield),thats the same and i have only 2 wires from my external mic.
[MTCB Android Head Units General] Telemachus:
With that mic hooked up, and the traces cut, your callers should hear nothing when the mic is unplugged. Should hear you (although crappy sound) when the mic is plugged in.

Other than that, not sure what's going on.

The bluetooth really is the major shortcoming of this unit. My buddy got a Yinou unit and the sound quality is crystal clear right out of the box.

He also paid $80 more than I did, so I'm not complaining much.
[MTCB Android Head Units General] TOMMYX2:
ok thx,i give up ad bought a seperate Bluetooth speakerphone:crying:

i bought now a http://www.parrot.com/usa/products/minikit-neo2-hd/

The China Rns Bullsh.. makes me crazy
[MTCB Android Head Units General] Telemachus:
You are honestly not missing much. The bluetooth audio quality on this particular joying unit is pretty bad. The Yinou ones seem much better.
[MTCB Android Head Units General] unni_kmr:
I am a bit confused now. So, did the bluetooth audio quality become bad for you after some time? Also, is the bluetooth music streaming quality bad or call quality?
[MTCB Android Head Units General] Telemachus:
Let me clarify:

1) Bluetooth audio quality streaming music from my phone, or from phone calls, to the head unit = excellent. Works like a charm.

2) Bluetooth audio quality that the PEOPLE ON THE OTHER SIDE OF THE PHONE hear, not so good. It is better since doing the mic mod detailed in this thread, but the road noise and echo that the caller on the other end hears is not good. It honestly doesn't bother me much, since I don't have to hear it, but they constantly are asking me if my window is down. This could potentially be from:

A) Needing a better microphone

B) Needing a better microphone jack

C) Needing a better head unit

Either way, I don't hear it and I don't talk to people that much while driving, so not a big deal to me.

If number 1 above is your problem, try updating your MCU or trying a new rom. There might also be some volume settings to play with in Factory Settings code "126". If none of that works, contact joying for a replacement.
[MTCB Android Head Units General] mixmike6:
If it was just the call quality that was bad I wouldnt mind as much but the audio quality is just unbearable and that was the main reason why I bought the unit to begin with.

I contacted joying and they say its due to my speakers and car doors...... but when listening to music any other way its fine so that makes no sense.