yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] typos1:
I did say that the MCU on the HuiFei types units is more developed, but bits been out for much longer so thats to be expected.

I m following the Newsmy and the Ownnice thread as well and there have been some bugs but theyre sorted quickly by the manufacturer - both threads are regularly contributed to by the manufacturer which is very helpful, theyre able to get bug reports and feature request direct from XDA users. I dont know where you got the idea that either of those units are "unusable", nothing in what I ve read about them suggests that.

The HuiFei type units are not without bugs either.

---------- Post added at 11:01 AM ---------- Previous post was at 10:44 AM ----------

KYD ? I guess you mean KLD ? There are no Android images for Witson, forget them, they are just a re-seller. Look on the first page for links to Android firmware and MCU images.
[MTCB Android Head Units Q&A] TooBusy:
Sorry if you feel offended. That definitely wasn't my intention. I trust you that this solution works for you. And yes, I did search the thread before replying to your post, and spent quite some time on that. But no one has confirmed the same... yet. You can call it "distrust" if you like, but I call it "being cautious and not making assumptions".
[MTCB Android Head Units Q&A] s.tb:
I mean KYD:

MCU: MTCB-KYD-V2.08

Nov 04 2014

Model: S07

Android:4.2.2_05112014

Kernel: 3.0.36+

RK30SDK-ENG4.2.2
[MTCB Android Head Units Q&A] abezze:
Finally I got OBD BT working

The problem was the Torque version.

Version 1.6.8 is working, because it shows 2 device in device list.... one is working.

First I paired the bt by setting...

New versions are not working.

KLD 2.20 Android 4.4.4 stock Generic clone OBD2 BT adapter
[MTCB Android Head Units Q&A] ced60:
Hello,

Here is the inside of my car radio. Compared to the picture placed on tutorial, I do not see the difference. everything plugged the air.
[MTCB Android Head Units Q&A] typos1:
Interesting, "KLD" is usually the abbreviation for Klyde units, you may have discovered a new manufacturer, in which case you can still use any Android version you want, but no MCUs for "KYD" available yet.
[MTCB Android Head Units Q&A] devin2:
I Confirm..; Mine ( Witson 8" W2-A9240V ) is:

MCU:MTCB-KYD-V2.18

Dec 09 2014 19:07:31

Model S07

Android 4.4.4_12122014

Kernel 3.0.36+

Build rk3066-eng4.4.4 12122014 18:20:32

I use the update.img of Coudu :KLD_4.4.4_1024x600_150113_rooted_light_reparted_init.d_v4.2 and it's ok ( only the front cam is inverted right and left )

When I receive it it'seems to be with a JY launcher ????
[MTCB Android Head Units Q&A] TooBusy:
Some cameras have an option to reverse the picture by cutting a wire. See the attached picture.
[MTCB Android Head Units Q&A] devin2:
I'm not lucky !!! I haven't this option ( no cable white or green ) ....
[MTCB Android Head Units Q&A] ktibor69:
Unfortunately you have 2pcs reverse camera. If you haven't cable cutting adjusting (reverse/front), you have to order front camera.
[MTCB Android Head Units Q&A] Billkaza:
Has anyone found a place to buy cheap Klyde kd 7008 or Erisin ES9000a (these are the same KLD unit) for VW?

If yes where?

Best price i can find so far is 400$
[MTCB Android Head Units Q&A] typos1:
Have you tried the setting in factory settings that turns on and of mirror image on the reverse cam?
[MTCB Android Head Units Q&A] devin2:
Yes and it works but ONLY for thr revers cam (connected on the revers cam input )....

Don't work for the front cam connected on the normal video input and select by the MTCAVIN.apk

I try to renam MTCBackVew.apk as MTCAVIN.apk ( because I hope that the setting in the factory setting can inverse this input, but that don't work...
[MTCB Android Head Units Q&A] DRidilla:
I have a new problem with my unit. I've been tethering with my iPhone no problem, and out of the blue the wifi icon is orange and while the unit is connecting to my iPhone it is unable to connect to the internet. I wonder if it's maybe a dhcp release / renew issue. Is there a way to do that in terminal or any apps that will let me diagnose the wifi issue a little better?
[MTCB Android Head Units Q&A] Krisjan89:
Try doing a factory reset first ( see OP on how to) if that doesnt work, then you could try flashing a new firmware on it ( look in file depository )

Hope that solves the problem
[MTCB Android Head Units Q&A] BrownHP800:
Torque and JY Rom

Ok, wanted to try the JY Rom so I flashed it and everything is set up. I really like the look of the launcher.

1 problem. I can not get Torque to work with it. I have the OBDII Paired (Works on KLD Rom)

When I start Torque, it always says Bluetooth is not turned on, which it is. Even the little phone icon in Torque is dark. For some reason with the JY Rom it is not reading the bluetooth status.

I reflashed back to KLD rom and torque is back to working again.
[MTCB Android Head Units Q&A] RyanBRZ:
Is it possible to adjust functionality of the physical buttons/knobs? My channel changing knob is weird, turning it left brings me to the third or fourth track in the folder, turning it right brings me to the track after that... really weird. The knob is basically useless.
[MTCB Android Head Units Q&A] agentdr8:
IIRC, there's no way to replace the stock recovery in the update.img with TWRP. Besides, you wouldn't want TWRP pre-installed at all times; the update.img files provided by the mfgs (and by the devs here) only work with the stock recovery.

One thing that is confirmed is the wifi adapter in these headunits is wired through USB, and most likely draws the full 500ma. While I haven't confirmed myself yet, I'm guessing they only provide a single 5V rail to all USB ports, and the internal wifi adapter, and it's probably only rated at 500ma total. That can explain issues with wifi dropping out, 3G dongles not working right, USB keys/drives umounting/crashing at random times. They all point to a common denominator; lack of sufficient current on the 5V rail causes all sorts of weird behavior for usb-connected devices.
[MTCB Android Head Units Q&A] tripa3:
Hi All,

wondering if someone can help me, I purchased a 2 DIN Android DVD unit for my Mazda Cx7, I was going to install it this weekend and thought i would bring the android version to 4.4.4 Kitkat, from Jell Bean.

I believe my unit is the Klyde, MTCB-KLD-V2.20. I have since downloaded and updated it to KitKat 4.4.4, with the assistance of the excellent instructions in this thread.

At first glance everything looks good, although I have one issue, i seem to have lost the ability to output DVD Video and Audio to my External DVD Headrests from this unit.

The DVD plays fine to the Klyde screen not showing at all on the Video Outputs.

Any assistance here i would be eternally grateful

Cheers

Steve
[MTCB Android Head Units Q&A] haxigi:
everything looks fine. Well acctualy i dont know how to help you :(
[MTCB Android Head Units Q&A] jojo77max:
I have a problem with my radio WITSON W2-A7047 with Rockchip 3066 (KLD).

I upgraded with a firmware taken from the links of the home page.

is this boo_201412-17_v1.0.0

Since I installed this version by inserting the sdcard with a different firmware not I get more automatic the ability to install a new firmware. how do I? can you help me? thank you!

unfortunately I tried to get into recovery mode but I can not with the procedures outlined in the first post ever
[MTCB Android Head Units Q&A] typos1:
Go into factory settings and uncheck "wheel3" (a mis translation of "freewheel", cant understand what this setting is for or why anyone would want it.)

The only thing I have plugged into the USB is my 128gb USB stick and the music still cuts in and out every few seconds.
[MTCB Android Head Units Q&A] RyanBRZ:
wheel3 was already unchecked so that wasn't the issue. But, I tried changing "Keymap..." to "Option 1" which works! So happy I can finally change tracks/stations while navigation is on.
[MTCB Android Head Units Q&A] clearchris:
Is there a compelling reason to use a 3g dongle over a standalone cellular wifi hotspot? I think the dongles are 3g only, and with hotspots you can get 3g and LTE or wimax.

I'm leaning toward hooking up a hotspot and thowing it in the glove box.
[MTCB Android Head Units Q&A] Killer Turtle:
I actually use the Verizon Delphi Connect with 4G LTE in mine, and love it. It's only $5 a month vs $20 for a hot spot, and I can connect up to 5 devices.
[MTCB Android Head Units Q&A] blankers:
I just installed KLD 4.4.4 rom.

I get no rds displayed on the radio....only frequencies. I ticked the rds box in factory settings, checked it was set to Europe.....but nothing. Anybody ?
[MTCB Android Head Units Q&A] nzdreamer55:
Just did a clean install of this ROM to the following head unit

Pumpkin Android 4.4 Double Din 6.2 inch Capacitive HD Multi-touch Screen Car DVD Player Stereo In Dash GPS Navi Navigation Support

(worldwidewebdotamazondotcom/gp/product/B00NPM37U0/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1)

Paired with this Bluetooth OBD adapter

ScanTool 427201 OBDLink LX Bluetooth: OBD Adapter/Diagnostic Scanner for Android & Windows

(worldwidewebdotamazondotcom/gp/product/B00H9S71LW/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1)

And the adapter pairs within the BT settings, however no app seems to be able to "see" that the adapter is paired.

Can anyone recommend another 4.4.4 ROM that will work with OBD BT? I would also consider a 4.4.2 that was not the ugly stock launcher and icons.

Thanks so much
[MTCB Android Head Units Q&A] agentdr8:
I believe all of the 4.4.2 roms suffer from the BT issue where Torque can't see any paired devices. Both [MENTION=853627]coudu[/MENTION] and [MENTION=3590033]Malaysk[/MENTION] latest 4.4.4 roms should work with Torque and most BT adapters.
[MTCB Android Head Units Q&A] koimr:
I don't have an answer for your BT issue but for the launcher you can always install a different one from the Play Store. If you choose one that has icon pack support then you can change the icons as well.

Nova Launcher is a good replacement.
[MTCB Android Head Units Q&A] nzdreamer55:
That is weird because I was able to get the stock 4.4.2 ROM to work. I just cannot get 4.4.4 to work. I posted that I tried coudu's latest and that it didn't work for me after a clean install.

BTW cool avatar

---------- Post added at 09:12 AM ---------- Previous post was at 09:00 AM ----------

Good point
[MTCB Android Head Units Q&A] RyanBRZ:
This is pretty much what I'm doing. I setup an acct with FreedomPop which is free 4G service on Sprints network. I pay $3.99 to upgrade it to 3G/4G just to ensure better coverage. They gave me 2 devices, a USB dongle and a wifi adapter. The USB dongle (Sierra 250U) does not get correctly recognized by the HU so I cant use it. The wifi adapter works but the problem I have is it is annoying to constantly have to turn it on and off, and keep it charged all the time. The time it charges while I'm driving versus the time it sits not charging does not keep the battery full--it eventually drains. Also, the unit will not power on while the charger is plugged in--very weird--so I have to get enough juice in it to power it on, disconnect charger, turn it on, then plug charger back in. I might take apart the unit and give it a permanent power-source from the battery using an adapter with voltage settings matching the units battery.

I wish my phone service (Verizon) allowed tethering without paying for it.
[MTCB Android Head Units Q&A] DRidilla:
Does anyone know if there's a way to get notifications to have a dark background in d [MENTION=3590033]Malaysk[/MENTION]'s rom?

For reference: http://i.imgur.com/y2Nruvb.png
[MTCB Android Head Units Q&A] gmanor77:
I am using the same rom as you mentioned, I had the same problem too.

It seems that the "android bluetooth" is turned off although the device bluetooth is on.

I downloaded 'torque lite' and within the settings of the app there is an option to use bluetooth (I can't remember exactly what I did), when I Changed it, the app showed a message 'turning bluetooth on'. After that all apps using odb bluetooth could see and communicate with the odb dongle.

Good luck.
[MTCB Android Head Units Q&A] blankers:
Can anyone help with this ? My wife,s gonna kill me if she can,t see the station names......
[MTCB Android Head Units Q&A] Killer Turtle:
If you have verizon, for $5 a month you can get teh Delphi Connect OBDII adpator and get 4G LTE. And Verizon does allow tethering without paying unless your still on the unlimited, but you could then get one of the wifi tether apps and use it.
[MTCB Android Head Units Q&A] typos1:
Some of the settings in there are weird, glad you got it sorted !

What about the radio IC type have you tried playing around with that ?

Just FYI, its not a Pumpkin head unit, they just sell them, it will probably be a Klyde or a Joyous unit.

---------- Post added at 09:26 PM ---------- Previous post was at 09:24 PM ----------

I like Nova and use it on my phone, but if you use launchers not from a HuiFei type unit then you loose the built in radio/music/BT music/ipod widgety thing unless you install the ugly KGL widgets.
[MTCB Android Head Units Q&A] RyanBRZ:
Wow I never heard of this. So it uses power source from obd2 port which is cool... So it'll be $100 for the unit, and $1 more than what I'm paying now a month for better, faster, and consistent connectivity. Definitely going to buy, as long it works with torque. Can anyone confirm?

As for tether apps , they are blocked and my phone is not unlockable or rootable. Moto X 2014.
[MTCB Android Head Units Q&A] pmbp:
I want this too :o
[MTCB Android Head Units Q&A] typos1:
I found out why V4A didnt work - Busybox wasnt installed on the ROM I had installed ! (Surprised V4A didnt have a toast saying that I needed to install BB as well). Certainly get an improvement in sound, but there are so many settings you could play around for hours with them !

When V4A was discussed before "headset" was the setting suggested - I ve tried them all and the one that would seem the most obvious for head units ("speaker") sounds awful, but "Bluetooth" sounded slightly better than "headset" I thought. What are the reasons behind headset being suggested ? I may email the devs and suggest a "head unit" mode, we might get even better sound if there was a setting specifically for head units.
[MTCB Android Head Units Q&A] Killer Turtle:
I will try it this weekend. I installed coudo's latest JY ROM so I'll check. I use my phone for it, and so haven't tried BOD@ BT with the HU yet. I also have USB BT device that works with android that I will see if it make sit work if built-in BT doesn't work.

---------- Post added at 06:27 PM ---------- Previous post was at 05:56 PM ----------

If this doesn't work, you could get one of these, http://www.newegg.com/Product/Product.aspx?Item=9SIA2C50V91538 and get a known working OBD2 reader and use both at once.
[MTCB Android Head Units Q&A] naeemahmeduk:
AUDI A4 KLYD Andriod 4.4.4

NEED URGENT HELP PLEASE...

i have updated my unit with latest MCU (v2.21) and latest android 4.4.4, however after update the rear speaker stopped working, and i believe its got something to do with the setting in "factory setting"

the canbus and radio setting have changed in application, also in other setting, the keymap and key touch have also changed.

my car is audi A4 and the unit was bought off eBay from pumpkin, does anyone know the setting for this please?

currently the rear speakers and the radio dose not work. before the update both worked perfectly.

i tried to downgrade the MCU and Android version to same version as original, but that didn't not solve the issue.

can anyone help please?
[MTCB Android Head Units Q&A] zorantoma:
go to factory settings(password 126) and set everything as it was setup before the update.restart unit,enjoy :)
[MTCB Android Head Units Q&A] psygnosi:
If anyone has unit mctb md-v1.83 update the system with jy latest version 4.4 kitkat for 800x480 and it works beautifully. Fixes SD card problem and bass output which was a problem with 4.2. Fyi.
[MTCB Android Head Units Q&A] kharnm:
Hi all,

I've bought an Android untit with the 1024x600 display.

I've a major problem, I've just installed Chrome, Waze, Sygic (maps not installed) and Poweramp (music on microSD) and I can't update my apps "insufficient space" ... but I've 2 x 32Go microSD card and more than 4/5Go on the internal memory.

For infomartion it's a BMW E39 version.

Thanks !
[MTCB Android Head Units Q&A] Xi23:
I have a problem. The device has gone black while driving. Now its not starting anymore. But i can go into recovery. I've tried to reflash the current versions but still won't start up.

Can anyone point me into the right direction to get this fixed?
[MTCB Android Head Units Q&A] clearchris:
Wow, that's really cool. I haven't heard of anything like that before.

That's interesting. I have looked into a few hotspots (all made by sierra) and they had the ability (configuration required) to come on when power is applied and turn off when power is off. It sounded like a perfect solution to me. If I go this route, I'll be sure the check the manual before purchasing.

Doesn't your unit at least have a sleep mode?

Thanks!
[MTCB Android Head Units Q&A] typos1:
Thats a common error with KK, either download an app like AppCacheCleaner, or update to one of the pre-rooted and re-parted 4.4.4 images on the first page, they have 2 or 3Gb for apps so you shouldnt have that problem with them.
[MTCB Android Head Units Q&A] ced60:
Is the MCU and the kernel are equivalent? If the kernel is different, is compatible between all radio GS KLD etc ...

If the kernel is compatible is it possible that this solves my radio problem?
[MTCB Android Head Units Q&A] koimr:
Tasker

Does anyone know the magic incantation to add to install-recovery.sh to have Tasker fire up sooner? :)
[MTCB Android Head Units Q&A] tolymatev:
I installed the stock JY kitkat on my device. When it first came on it was all Chinese, i figured out a way to get in the settings to change the language to English but not everything is english. When i pull my notification bar down some of the notification buttons are still Chinese. any fix to that?

thanks
[MTCB Android Head Units Q&A] zorantoma:
Restart the unit.
[MTCB Android Head Units Q&A] koimr:
Yup, try and restart first.

If there is still Chinese afterwards then post a screenshot. It might be an app's notification or something.
[MTCB Android Head Units Q&A] naeemahmeduk:
hi, thanks for reply but i don't know the original setting. i have audi A4 pumpkin unit. dose anyone have the factory setting please?
[MTCB Android Head Units Q&A] typos1:
You dont have a Pumpkin unit, they just re-sell Klydes, KGLs and JY units, which do you have ? The best thing to do is to go into factory settings and play around with them to see if a different settings can bring the sound on the rear speakers back.
[MTCB Android Head Units Q&A] haxigi:
I have no experience in kernel side. I saw that mine device have still bad FM strengh. I need to try mcu 2.08 version. Near my house the signal is good, even rds enable but few meters away i can hear noise :/
[MTCB Android Head Units Q&A] agentdr8:
Whoever "made" the base android install for these headunits did some bizarre changes that limit/remove certain functionality, compared to normal devices. Not sure why, but I'm sure they thought it was a good idea at the time.

I'm wondering if it's possible to use a "standard" 4.4.4 build for a different rk3066 device and just cherry pick some of their changes to make it MCU-compatible, in the hopes of making a more complete OS.
[MTCB Android Head Units Q&A] gy_ro:
Power amplifier chip is replaced, and now I'm reporting back for the outcome. The normal audio level is back; but that's the only positive change. The other reported defects are still there, i.e. left front ch = ok, the other three are not (blobs). Moreover, if I use the low outputs which allow one to use a separate power amplifier, all channels do blob, regardless of how one selects the output (left/right/front/back) in the software. :crying:
[MTCB Android Head Units Q&A] BrownHP800:
JY 4.4.4.4 and Torque

Anyone running a JY KK rom have Torque running? I can not get torque to show my OBDII in the device list. It is paired with the HU and works using KLD rom, just not JY
[MTCB Android Head Units Q&A] koimr:
Once again [MENTION=6041319]dsa8310[/MENTION] you are my hero. :) I'll try these out tomorrow and see how it goes. Thank you sir!
[MTCB Android Head Units Q&A] elbaroark:
Wonderful Stereo

I just purchased the KD-C0223 Pumpkin Android 6.2" 4.4.4 KK headunit from Amazon and I love it. Flashed one of the 800x600 4.4.4 KK pre-rooted images and it flashed wonderfully. Love the increase the in the internal memory. Now to try and figure out how to get Link2SD to work with this unit.

This unit is the Klyde version MTCB-KLD-V2.22. And has anyone ever tried to use OBD Droidscan from the Playstore? I use that one as my main program on my phone and tablet and it has not failed me yet.

I have this installed in a 2006 Ford F150 Lariat 4x4 Extended Cab and works great.
[MTCB Android Head Units Q&A] comptechltd:
I have a c0223 but didn't think it was 800×600.

Steve
[MTCB Android Head Units Q&A] nzdreamer55:
So gave this launcher a try and it won't stay and the primary launcher and just reverts to the original launcher. I'm using the 4.2.2 OS.
[MTCB Android Head Units Q&A] devilsoft:
Yes, i forgot to say about BusyBox, because I supposed that everybody uses [MENTION=853627]coudu[/MENTION] or [MENTION=3590033]Malaysk[/MENTION] rooted roms, which has BusyBox installed by default.

The reason I use headset is, because Headset has more options to play with, and is also the first page, so I don't need to scroll to the other ones.

Tell me how it goes with the dev, if they implement a head unit mode...it can be a cool thing to have.
[MTCB Android Head Units Q&A] typos1:
I m using coudu's ROM and I didnt bother with BB because I thought it was installed, but it wasnt - I checked the list of what he does to his ROMs and it wasnt mentioned.
[MTCB Android Head Units Q&A] clearchris:
I saw you mentioned in the earlier thread that you suspected some capacitors of failing. Have you replaced them all and how old was your unit when it failed?

Given that these units bake in hot cars all day (and I assume they use cheap no name caps) I figured they would be good for two years max. Would be worth replacing them sooner if they fail and cause destruction.
[MTCB Android Head Units Q&A] typos1:
Why are you assuming theyre cheap ? STMicroElectronics who make some of the components including the MCU, supply the automotive industry the world over - its highly likely you have some of their components in you car already. I recently discovered their transistors in a Peugeot heater and their inductors inside a Harmon Kardon Mini amp, for instance.