yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] Adventr:
I've got a 4.2 JY double din that works great, except that I can't get Torque working. OBD adapter pairs, but it never asks me for the PIN number. I think the issue lies there.

Adapter works great with my cell phone.

Is there a trick to this?

Searched for torque issues on here, but didn't see the same problem.
[MTCB Android Head Units Q&A] corwest:
Ok so is there a better replacement for the bluetooth app that comes with the KLD units? I would love one that automatically connects and starts playing from my phone when I turn on the unit
[MTCB Android Head Units Q&A] nzdreamer55:
This was the bane of my HU as well. I was able to get a Bluetooth OBD to connect to Torque but as soon as I went to 4.4 it would not work. It would pair and I would not have to enter in a pin as well, but it seemed like the Bluetooth connection could not pass this off to the apps. They just would not talk to each other. Now I have a USB OBDII connector and decided to forget the Bluetooth all together. I could not find a solution to this. Hope this helps you decide to get a USB connector OBDII to plug into your radio or you could just mount your phone in your car and use Torque there and let the radio show you something else (videos maybe).
[MTCB Android Head Units Q&A] typos1:
Have you tried looking at the settings on the monitors ?

---------- Post added at 11:30 AM ---------- Previous post was at 11:27 AM ----------

Really ? Its deffo been mentioned before. 4.2 you say ? Not 4.4.2 ?

No, but you could try the KGL, JY and KYD firmware and see if you like the BT apps in them.
[MTCB Android Head Units Q&A] gmanor77:
Hi,

Had the same exact problem. It happened after installing xposed framework and XposedMTC.

I reflashed the os without the xposed module and now everything works as it should.
[MTCB Android Head Units Q&A] clearchris:
I had neither software installed. I'm considering putting heatsinks on the major chips and installing a fan.
[MTCB Android Head Units Q&A] clearchris:
I run tasker on my phone to perform actions on my phone once the phone detects a bluetooth connection to the car. The kld bt app will auto connect if you configure it to.
[MTCB Android Head Units Q&A] XXXXROCKETXXXXX:
I need help hopefully some can help

I bought a android head unit and the only way i can get it to boot up is to boot it into the recovery mode (by holding the power and rest button) ok so it says error and no comand after i try an choose any of the options. So i realized something that it was the firmware so what i am asking for is how the f*** do i start by finding the right stuff the mcu bord is mtc_rk_rev 0.3 i cant find out the the correct mcu. Img because i never got past the recovery screen so is there any other ways i can check besides trying all tbe different img's the head unit i have is unmarked but i think its a pumpkin brand

autopumpkin.com/new-products/pumpkin-plug-and-play-pure-android-4-4-kitkat-double-din-car-radio-dvd-player-7-inch-hd-gps-navigation-system-head-unit-support-obd2-bluetooth-3g-wifi-air-play-1080p.html

Model jy_c0236

Any help would be appreciated!
[MTCB Android Head Units Q&A] typos1:
Have noticed them getting hot or are you just theorising its an overheating problem ?

Google the model number and see if there a copy of the manual on the internet ?

---------- Post added at 05:58 PM ---------- Previous post was at 05:56 PM ----------

A good place to start is the first page where you can find loads of basic info about these units and a link to a pdf that tells you which type it is. Pumpkin is not a Brand they are just a re-seller, a clue may be the "JY" .
[MTCB Android Head Units Q&A] XXXXROCKETXXXXX:
So far i got it to reboot but once the boot image comes up it spins twice then shuts down
[MTCB Android Head Units Q&A] yeah88:
eventually did you experience more bass with a KLD 4.2 rom on a GS or with 4.4.4 KLD ROM.. I ve been using Coudous KGL ROM in my GS with 2.08 MCU it has improved a little in terms off bass but only a little. i was just wondering if trying a KLD ROM will provide more sound quality improvements. Thanks in advance
[MTCB Android Head Units Q&A] agentdr8:
Tasker, lux, twilight, XposedMTC.
[MTCB Android Head Units Q&A] tylerzipz:
Thanks typos1 will do, gonna prob just grab the 128gb USB flash and stick to it, guess it has to do with needing too much power
[MTCB Android Head Units Q&A] cabbottl188:
A little help KLD version FK2066.

HI Guys

There are many experts here, I'm a learner so need as much help as possible. I have the KLD version FK2066. I have a Peugeot 306SW, I mounted the unit pretty well and used the ISO wiring harness.

I have 4 problems - Any chance of help or point me to the right thread/page?

1 - Bluetooth is poor, even when devices are next to each other. I also tried to pair my OB2 Mini which says it pairs but the OBD apps never find it, the Bluetooth light remains dim in the finger drop down menu

2 - The back-light never comes on, even when I turn car lights on. No idea what to do/where to start on this one

3 - I installed the radio last night and this morning the car battery was flat - Will test again tomorrow but does anyone have any similar issues?

4 - How do you restart the device? When I hit power it says shutting down, screen goes black but when I press power back on again I'm right where I left off.

Thank you all - I appreciate you taking the time to read and hopefully offering me a little help.
[MTCB Android Head Units Q&A] clearchris:
I have mostly nothing to back it up, its a total guess.

I have heard reports of the wifi chip getting hot. Between increasing cooling and swapping out caps, thats the low hanging fruit. Although, depending on how the wifi works, installing a better antenna may reduce heat, the wifi chip may be pushing as much power as it it has into that tiny antenna. Further, my limited knowledge on antenna technology says that much of the energy may end up reflected back to the chip by the antenna.

After that, Im pretty fresh out of ideas and skill.
[MTCB Android Head Units Q&A] dannyw13:
Hi Typos

well on the mazda 6 there is a seperate display above the radio, they have built their system image to send a signal through the canbus adapter up to the screen, when i goto music apk it will display MUSIC on the mini screen, if i goto radio it will display FM 95.8 MHZ , i have decompiled the system img im not sure if the coding is in the apk itself or somewhere else in the image
[MTCB Android Head Units Q&A] myspac:
Rootable unit for Auti TT ?

Hello,

I m new on this thread; I would like to buy one of these great android car radio for my Audi TT.

I found some items 4.4.4 or 4.2 on aliexpresse and alibaba but I don't know which model to buy to be able to root it..

Some one can help me to find what I must ask to the seller to be sure that I ll be able to root it ? or some direct links to buy one ?

if I ask the type (HuiFei/KGL (KGL), Klyde (KLD), RoadMaster (RM), GS (GS), JY (JY), MD (Rhythm Audio) (MD)), is it enought or I must ask the firmware too ?

(I find nothing on this thread for Audi TT )

(one more question: is the display 1024x600 bright enought ?)

Thank you
[MTCB Android Head Units Q&A] corwest:
Your asking quite a few questions here.

First- all these headunits have interchangeable Android versions. Of which there are a few that are already rooted. You can simply put them on your device and skip the rooting yourself.

Second- These are all also resold under different brand names. You would just have to ask the seller who the manufacturer is of the head unit and find one that fits the TT.

Third - The display resolution has nothing to do with the display brightness. These all should be plenty bright enough for a car system.
[MTCB Android Head Units Q&A] myspac:
Thank you very much , everything is clear for me.
[MTCB Android Head Units Q&A] Ish Kabibble:
Big thanks to all who have contributed to customizing these units. I just purchased the KLD-V2.30 from PumpkinAuto on Amazon. Had no problem updating to V2.40 and installing Coudu's rooted 4.4.4.

Everything works like a charm, but I can't get music to play from a third-party app. I prefer Rocket Player's interface, but whenever I select a song to play on that app, it crashes back to the launcher. Music plays fine through the default app. Radio works fine too. Anyone else experience this? Any suggestions?
[MTCB Android Head Units Q&A] typos1:
Well go into recovery and try and flash another image.

No, it aint a power issue with the USB music problem, an HDD works fine it it has a double USB cable with one end connected to a USB power supply NOT on the head unit.

If you are new then you need to read the first page and read the thread or at the very least search the thread for answers to your questions.

Use the thread search box on the right there are many posts about BT problems, you have not posted what Android version you have.

Is the illumination wire connected ? (basic installation stuff that applies to any car stereo).

Did you install the power and acc wires correctly ?

Well I d bung a heat sink on the wifi chip for good measure as well as the cpu and see what happens :)

Yes, there are displays like that on lots of cars. Not sure what you mean by "built there image" but the MCU and Android interface with the CAN Bus system and all seems to be working as it should. If you want to try and change it then it will be somewhere in the one of the apks, just a question of finding out which one.

---------- Post added at 12:48 AM ---------- Previous post was at 12:44 AM ----------

The make and type of car is not relevant, they are all the same units (apart from screen size) with different front panels to suit different cars. Read the first page and all your questions will be answered. The sellers do not know much about all the uinits and they certainly will not know anything about rooting. There is a wealth of info in this thread, but you will have to read the thread and use the thread search to find it.

---------- Post added at 12:50 AM ---------- Previous post was at 12:48 AM ----------

Or he could just read the first page and the pdf that explains how to identify which unit is which ? :)

---------- Post added at 12:53 AM ---------- Previous post was at 12:50 AM ----------

Hello. "V2.30" is the MCU version, not the model number.

Someone has mentioned Rocket player before, use the thread search function to fin the posts. Also read the first page, there is a list of of useful applications one one which will help you with 3rd party music players.
[MTCB Android Head Units Q&A] Ish Kabibble:
Hi typos1,

Thanks for the quick response. I did a search of this thread and the only other post that mentions rocket player went unanswered (http://xdaforums.com/showthread.php?p=55832075&highlight=rocket+player#post55832075).

I've also read through the first post a number of times but can't seem to find anything that will point me in the right direction. I did find a suggestion that some crashes are related to read/write permissions, but the crash still occurs when all directories have those privileges. Any other suggestions?

And I believe the model number is "S07"
[MTCB Android Head Units Q&A] corwest:
I was mainly talking about how some resellers will make custom harnesses to match the factory ones and make the HU to look like a factory option one. Don't worry I did read the first page and know how similar they all are :)
[MTCB Android Head Units Q&A] typos1:
Ah right, OK sorry, so many people ask questions that have been answered already cos they dont bother to search. I m afraid I cant help, I dont use Rocket Player, dont know why it doesnt work, lots of mucic players do. Under "ModdedApps" on the first page, Car Service and MicronTek Head Unit Service are mentioned they enable SWC of 3rd part music players, so you must have missed that !

All of these units, whoever makes them, are called "S07".

---------- Post added at 01:24 AM ---------- Previous post was at 01:22 AM ----------

I was referring to him not reading the first page, not you. You told him to ask the seller to find out what type of unit they sell, he does not, all he has to do is read the first page and click on the link to the pdf that explains how to indentify units.

None of the sellers do anything that you mention, its ALL done at the factory (KGL, KLD, JY, GS etc), the sellers do nothing apart from sell them, even screen printing of the seller's name is done at the factory. :)
[MTCB Android Head Units Q&A] corwest:
That part I did not know. Thanks for the update though, so the resellers really don't do a single thing besides put them on a shelf to sell. Interesting
[MTCB Android Head Units Q&A] Ish Kabibble:
I tried both apps and neither had an impact on the crash. I installed PowerAmp for troubleshooting purposes and it worked just fine. I would stick with PowerAmp and call it a day, but the interface is not quite landscape friendly. I just emailed the Rocket Player devs. Hopefully they'll be able to assist. If I get any answers I'll be sure to report back. Otherwise, it's back to the Play Store to find another default music app. :crying:
[MTCB Android Head Units Q&A] doctorman:
Does anyone know what is the RADIO CHIP used in the JOYOUS units?

RDS support?

HD Radio support?
[MTCB Android Head Units Q&A] XXXXROCKETXXXXX:
Can't find system. Img no system img ignore.... Seems like a bigger problem than i thought :/
[MTCB Android Head Units Q&A] corwest:
Your download looks like its corrupt. Redownload the firmware and try again
[MTCB Android Head Units Q&A] XXXXROCKETXXXXX:
I spent all day downloading and installing most installed but keep getting the same mcu errors and then when i try to choose the last option in the recovery list the reboot from back up or something like that it says E: cant find system img. If i cant get the files from the guy i bought It from can anyone recommend a universal head unit that is known to work lol
[MTCB Android Head Units Q&A] corwest:
Then your backup is corrupt if you made one? You want to install clean from the "install from sdcard" option in recovery. Which ironically you need to put the sdcard in the GPS slot not the SD card slot.
[MTCB Android Head Units Q&A] XXXXROCKETXXXXX:
Couldn't have made a backup due to the unit first boot up was straight to the recovery page i have never seen past the spinning android boot image so im just thinking to cut my losses and actually invest in one everyone has so i know it could be fixed or rooted if i ever need be
[MTCB Android Head Units Q&A] Enc0der:
I agree with you about the interface of PowerAMP.

I think you should try jetaudio, I really like its landscape interface (unlike the portrait interface).
[MTCB Android Head Units Q&A] xrapidx:
Anyone have a decent input (keyboard) solution? I find the onscreen keyboard takes over the entire screen and you cant see anything... I keep using the volumn knob to minimize it so I can see whats on the screen when typing.
[MTCB Android Head Units Q&A] typos1:
The clue is in the name "sellers", lol :)

---------- Post added at 11:52 AM ---------- Previous post was at 11:49 AM ----------

All these units support RDS, all listings I ve seen for Joyous units state that. None support HD radio or DAB.

---------- Post added at 11:53 AM ---------- Previous post was at 11:52 AM ----------

Have you tried updating the MCU ?

If you cant get it to boot return it as faulty and get another one the same, this sort f thing is rare. Only choose another unit if the replacement does the same.

---------- Post added at 11:57 AM ---------- Previous post was at 11:53 AM ----------

There are loads of keyboard apps available on the Play store, you could try an external keyboard, there are some compact ones available. You could also try dragging the screen up so what you are typing appears above the keyboard, thats what I do.
[MTCB Android Head Units Q&A] nzdreamer55:
Hi everyone. I think I have an easy question for you that I am just a little too dim to figure out. When I turn on the radio on my headunit it plays music like expected, but then when I want to switch to an app (say google music) to play something I cannot get the radio to stop. Is there a way to stop the radio?

Thanks

-S
[MTCB Android Head Units Q&A] maan2304:
I have to press the volume-knob to exit and close the radio-app....
[MTCB Android Head Units Q&A] typos1:
Press "back".
[MTCB Android Head Units Q&A] RyanBRZ:
New issue with my unit.

I recently connected an amp for my mids\highs and no longer use the units built-in amp for sound output. Everything was running fine for a few days, now my lows sound like a connection is loose some where. If I blast the volume, it will come through but stutter a little bit. If I have the volume below half I get nothing at all. When at mid-volume it sounds like a connection is loose with bad stuttering. Highs work perfect and from what I can tell mids are ok.

My unit is a Klyde, I tried flashing multiple MCU's and different flavors of coudu's ROMs but nothing is fixing my issue. Can anyone recommend anything to address this?

I am using the sub line-out split with a Y-adapter. I also tried using the front\rear output into my sub amp and the same thing occurs. Its almost as if the unit is having a hard time with outputting low frequencies.
[MTCB Android Head Units Q&A] Ish Kabibble:
Great suggestion! That's a perfect replacement for Rocket Player. I really wanted gapless playback with album sort by year and this does the job perfectly. Now I just need to play around with Xposed Framework to get my OBD device to connect and I'll be good to go. Thanks again!
[MTCB Android Head Units Q&A] Enc0der:
quick question: Does Viper4Android also affect MCU apps like Radio/CD ?
[MTCB Android Head Units Q&A] encryptedslayer:
this radio is awesome yet so frustrating

alright guys, so I was toying around on my radio last night and I updated mcu and firmware. 4.4.4 v.2.12 wanted a clean start. installed some apps I had previously and while configuring torque its asking me to enable Bluetooth or connect a device. BEFORE I messed with anything torque worked flawlessly with my obd2 bt dongle. now im stumped. Its green for connected. I seriously hate the way the Bluetooth is on this device. I feel like its only 10% developed. you cant turn it off and on like on a normal tablet or phone and it never disconnects from anything but my phone properly. Ive seen a few posts about obd2 bt not working on 4.4.4 so I tried downgrading and still have the same results. is it the mcu? that's pretty much the only thing I haven't tried changing.
[MTCB Android Head Units Q&A] Siffion:
Have you checked to see if BT is on in the settings/factory settings. Code is 126
[MTCB Android Head Units Q&A] encryptedslayer:
yeah I made sure it was on 06 ill go back out and check but this is so frustrating ive searched through hundreds of posts and most are only related to when the firmware could only handle connecting to phones.
[MTCB Android Head Units Q&A] typos1:
Hmm, have youn tried changing the CAN Bus settings ? Some people have said different settings sound different. Mind you I m pretty certian your BRZ has CAN Bus so not sure that would help.

I would junk the split RCA set up, install Viper4Android and use the 4 RCAs then get your amp to power the sub, that has a sub setting. Although I dont understand why youre using a Y (lol) from the sub out, I thought people who wanted sub control used a splitter off either the front or rear RCAs to get a sub connection.

---------- Post added at 10:25 PM ---------- Previous post was at 10:23 PM ----------

Only Music AFAIK - thread search to confirm (agentdr8 posted about it around Jan to March this year).
[MTCB Android Head Units Q&A] RyanBRZ:
I did set the canbus to none since my car doesn't use it, I'll try to set it to various to see if I can get my low volume lows back. I tried multiple but had no luck.

I'm using the sub out because the unit has it. Why wouldn't I use it (lol)? My unit has 1 single rca for sub, then a set for front/rear (total of 5 plugs). I got the Y splitter to get 2 plugs out of the single sub out since my amps input accepts 2 RCA's.
[MTCB Android Head Units Q&A] encryptedslayer:
still no luck messing around with the settings. anyone have any ideas? I don't even know where to start... -_-
[MTCB Android Head Units Q&A] typos1:
Why wouldnt you ? Because these units have no ability to adjust the levels of the sub, if they did then you could turn the sub lvel up to counter your problem.

Try disconnecting the sub lead and installing Viper4Android, then using the sub settings. Search the thread or google for a guide on all the settings. There were some relevant posts about it Jan to about Feb ish I think, including someone with a similar problem who sorted it with Viper. What amp set up have you got ?

---------- Post added at 12:44 AM ---------- Previous post was at 12:43 AM ----------

No quote or explanation in your post so no idea what you are talking about.
[MTCB Android Head Units Q&A] RyanBRZ:
And you think it's better to run the sub amp off of the front or rear channel? How does that help? Even with the sub amp gain way up high, it outputs nothing until I get to about 15 volume. At that point the bass comes in hard. Very strange. I tried using the front/rear lines in the sub amp but I get the same result.

I have a soundstream rub1.1000d for sub and soundstream rub4.500 for front/rear.

I tried viper but was confused by it, I need to take the time to read up on using it. I hope I can get this resolved or I might have to ditch it. The android auto units are now available by pioneer.
[MTCB Android Head Units Q&A] chaindrive2000:
video output not working

Installed the klyde 4.4.4 on a double din eonon stereo. wired a external 7" monitor and dvd output works fine but plaiyng movies off sdcard does not output video. Wondering if this is an issue with hardware or the rom. is the dvd hard wired to the video outputs?
[MTCB Android Head Units Q&A] Us-Marshal:
I had a similar issue with my subs. I have a 4 channel Alpine (PDX-F4) for my highs and a (vintage) Rockford punch amp running my subs. Originally I had the front & rear preamp outputs going to the Apline 4 channel and the sub output going to the Rockford. Even with the gains on the Rockford maxed out, the sub levels were too low. Ultimately I decided to split the rear preamp outputs and run them to the Apline rear input AND to my Rockford sub amp. The alpine amp has a high pass crossover that I set for 150hz. The Rockford did not have a low pass filter so I bought inline cross overs/filters to use on the inputs to my sub amp. For ref here are the filters I used.

http://www.parts-express.com/harrison-labs-fmod-inline-crossover-pair-150-hz-low-pass-rca--266-256

Ultimately this setup gives me sub levels that are consistent with the other signals and has really improved the overall sound.

Hope this hels.
[MTCB Android Head Units Q&A] RyanBRZ:
I wish. Even using the front or rear output, the sub doesn't move until my volume hits 15 and at that point it plays at level 15 (aka loud). Its like volume ~15 is an on/off switch for low output. It's really weird since it was working totally fine until last night. I've tried flashing multiple roms/mcus but nothing brings it back to life. So now at low/mid volume I only have highs, at high volume I have everything.

Right before I hit the point where bass comes in, it sounds almost as if a wire is loose or something. Bass hits inconsistently. Then I crank the volume up a little more and it plays loud and normal.
[MTCB Android Head Units Q&A] Us-Marshal:
I see. Is the result the same regardless of the media source (cd, DVDs, radio, MP3)? Are you using outboard amplifiers or internal amp?
[MTCB Android Head Units Q&A] RyanBRZ:
I've tried with MTCMusic, rocket, and MTCRadio. Using external amps only.