yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] ptclabs:
download the app bluetooth phonebook on your phone and try again.

get a decent microphone like a parrot. Disconnect or put a little piece of tape over stock microphone.
[MTCB Android Head Units Q&A] typos1:
No, its an AN21-U, theres a thread for it on XDA.
[MTCB Android Head Units Q&A] wosi:
mounting screw short

Just a note on something I noticed.

With a KGL unit when there are mounting brackets attached to the side of the unit there is a possibility that a screw will short out the contacts on the bluetooth card.

It was stopping my bluetooth, wifi, gps from working and I would imagine it could be responsible for random issues.

Bottom screw, right hand side when looking from front.
[MTCB Android Head Units Q&A] dnts:
That explains why my BT board was bent to the left (further from the side of the chassis) when I opened the unit. They must have "acknowledged" the problem in their "design" and updated their "production flow". I though they had BT reception problems when the board is straight up so they bent it...
[MTCB Android Head Units Q&A] dmandn:
Anyone tried or seen anything on these ones? hXXp://www [dot] ebay [dot] com [dot] au/itm/8-Android-4-2-Car-Radio-GPS-NAV-Suppot-OBD2-DVR-SUB-IPOD-F-Tiguan-Rabbit-Jetta/171376589434?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140106155344%26meid%3D444651c7ef9940b7ad4698d87637bb57%26pid%3D100005%26prg%3D20140106155344%26rk%3D1%26rkt%3D6%26sd%3D151253140210&rt=nc

[IMG="Front of Radio"]http://i.ebayimg.com/00/s/MTEzOVgxNjAw/z/YfUAAOSw9NxTtSor/$_57.JPG[/IMG]

[IMG="back of radio"]http://i.ebayimg.com/00/s/MTEwN1g3OTk=/z/tkoAAOSwh6xTtRj7/$_57.JPG[/IMG]

I understand you do not want links on this forum but I cannot find a brand or model or anything to determine what the unit is. (If there is a more suiting way to do this please let me know, it is not my intention to advertise). Also, is this a Klyde?

Mainly looking for something with better audio than the stock volkswagen unit (that shouldn't be hard), with gps capabilities, working with wheel controls and canbus, external mic support for the original volkswagen hands free. Any recommendations? (yes I would prefer android, and a good screen. I can wait if need be for better models).

...Guess it also helps to mention it is for a 2013 Volkswagen Jetta ed7 bought in Australia.
[MTCB Android Head Units Q&A] edding7:
hehe ok!.. i was with tapatalk through android and i didn't see this button.

Some donation done it!. That's a little small contribution for your effort!

Please go on with this amazing work :)

---------- Post added at 05:13 PM ---------- Previous post was at 05:03 PM ----------

Nir. You are the man!

I know something about electronics and i was searching time to inspect what the hell is going on inside to have this bad signal.

You save me a lot of time, thank you very much!! I will use your guide to make my own modifications. That's a shame they didn't take care about mic level signal even to have a not usable unit :( .. for me, it worth it to pay 30$ more to have a usable free hand

:)
[MTCB Android Head Units Q&A] Skitals:
Just an update, I'm returning my Klyde unit to Tmart. The radio reception was little improvement over the GS.

I would avoid Tmart like they plague. They are completely incompetent. Besides missing parts from my order (GPS antenna and remote control, which are in their photos and listed in included items), three times now they have sent me an email claiming to have a return shipping label attached, and when I kindly inform them there is no attachment they follow up saying their are missing information and need my phone number for the shipping form. I provide my phone number, they send another email with a missing return label attachment, and now they are telling me my own phone number is wrong. WTF is wrong with these people. DO NOT SHOP AT TMART.
[MTCB Android Head Units Q&A] Baldrick99:
I'm sorry, but I think you've seen the last of that.

Garth Brooke's is driving around with it in his car right now as we speak.......:laugh:
[MTCB Android Head Units Q&A] donaldta:
Yes, you would probably still need to unlock the bootloader in order to boot into custom ROMs. Most OEM bootloaders will only boot the ROMs that it is signed by its platform key. But, that's just one part of the problem. The other is that unlike an Android Tablet or Smartphone, these Android Head Units are a hybrid design.

Think of it as an Android device that's internally attached to a car stereo. The low level I/O board with the MCU is technically a separate device. It boots up much quicker and can operate independently of the Android board inside. That's why you can sometimes hear music even before Android powers up. The biggest hurdle for making a custom ROM for these head units will be interacting with the MCU to control the low level functions.

While it is true that the stock multimedia apps act as remote controls for the MCU, it doesn't mean we can just install them on another ROM and expect them to work. The drivers to interact with them must be in place so that the Android board can communicate with the MCU for its I/O resources. To my knowledge none of the manufacturers have released the source code for those drivers. So until then, yes it is possible to put a different ROM on the device but there is no guarantees to be able to retain the full functionality.
[MTCB Android Head Units Q&A] webdude12:
That dirty %#*@^#&@! Hahah, Sad thing is I work in the country music industry, and if I even thought that was true, I would be knocking on his management's door right now. :)

A call to FedEx today returned no results. They still have not found the box, but did find out that we have to wait 5 business days before they will declair it lost. :-/

My point of contact did say that he asked the warehouse managers of both Nashville and Memphis to assign someone to go through the warehouse and search for it today. I have my doubts, but guess we will see.

Anyone else gotten theirs yet???
[MTCB Android Head Units Q&A] blankers:
Sorry for your loss. :(

But the good news is my unit arrived today. :D

I'm fitting it at the moment. I bought the one specifically for my Toyota rav4 and first impressions are very good. It fits exactly in the facia and the pre-wired connections fit the old radio connections, so it was just a case of plug and play. I have briefly tried it and I must say the fm radio is brilliant. I am picking up stations I didn't get on my stock radio.

It has built-in wifi and I tethered it to my phone. Browser and play store work well. The music app picked up my mp3's as soon as I inserted the 32g sd card. It didn't come with any satnav app so I installed tomtom and it works really well.

As far as I can see, everything on it works

My only criticism so far is that there is no hard button for 'home' or 'radio, so these have to be selected on the screen. There are 3 hard buttons which are not necessary ; setup, track right, and DVD., so I would have liked to see these changed...

I will do a video as soon as I can.

Anyone with any questions about the unit, feel free to ask......

Edit: Videos are up.

http://youtu.be/tuqVtx6JAdg

http://youtu.be/SMYQgJZ7GBo

There are 2 parts....
[MTCB Android Head Units Q&A] webdude12:
Great News - They found the radio. Bad News - Its in Little Rock, AK. Even Worst News - I wont have it till Thursday. :confused:

Apparently it got loaded onto a truck going to Little Rock, instead of Nashville, and they found it this morning. This afternoon (evening), it will get put on a truck going back to Memphis, then onto a truck going to Nashville. I live about 45 miles outside of Nashville, so by the time it gets to my local delivery driver, it will be Thursday morning. Which means it will come sometime Thursday Day. FedEx normally hits my house around 3pm, so I will have it up and running by Thursday night no problem. :)
[MTCB Android Head Units Q&A] blankers:
Great news !

I'm sure you will love it. I love mine !!
[MTCB Android Head Units Q&A] pakidermo5000:
Great !

Thanks for the videos. I have updated the first post. I see that the unit seems to work pretty well. I am just a bit disappointed that the boot up time is around 30s. Hopefully, it can be reduced, as it happened with the OUKU, to around 15s.

Regarding you comments about the "useless buttons" and need for a home button. Probably you can reprogram the buttons by entering on protected/engeneering mode. I really have no idea how to do it in this unit, but in others you enter through the bluetooth module by inputing a code. Probably, you can find this info on the manual, if you got any.

Some questions for you:

- is the unit staying on a kind of stand by mode when you turn off the car (for an hour or so before shutting down completely)? or jit ust shuts down completely every time you turn off the car?

- when you save radio stations, can you save them by name or just frequency ?

- what happens with sound when you use the gps and you are listening to music/radio ?

- have you tried other apps than the stock ones for music, fm, gps, etc?

- is the screen birght enough? can you dim it ?

- what is the time that the gps needs to position?

- when the unit boots up, is it playing the same than when it was shut down?

- Is there any sound coming out from the unit (probably it can only happen with the radio) before you see the main screen? or you have to turn radio on each time?

- what about bluetooth ? is the contacts list stored on the headunit? can you search contacts? How is the sound during a call? Have you tried A2DP?

Hope it is not too much :)

Thanks a lot !
[MTCB Android Head Units Q&A] blankers:
As you know I only got this today so I can't answer all the questions.....but what I can...

The unit shuts down if you switch the car off completely. It will stay on and boot up using the first click of the key in the ignition, so you don't have to have the engine running to test..

The radio stations save by frequency, although they show the station name on the screen once selected. I had already noticed that the 4.1.1 unit saves by name, so I might use their radio app instead.

Music with gps. That's configurable, default is to lower the music and play the gps sound, then back to music.

The screen is bright enough. I didn't notice if there was an auto setting for night time.

Gps gets position straight away. It must get position as soon as you boot.

If radio was running, it starts again. If music was running, it resumes when you boot.

Radio sound comes on before android has booted.

Bluetooth stores your contacts, sound seems ok. Haven't tried A2DP yet.

Will be able to answer more in a few days, after more testing

p.s The manual that comes with it is crap....tells you nothing...and is in Chinglish.....
[MTCB Android Head Units Q&A] webdude12:
Does it have USB debugging?

Have you tried any of the "Self" Root APKs??

I can not wait til Thursday to start playing. :)
[MTCB Android Head Units Q&A] blankers:
USB debugging is in the factory settings menu, which needs a password. I tried a few but couldn't get in, however when I tried z4root, it let me in and I set USB debugging on.

No luck rooting so far. I tried z4root framaroot....both failed.

Also noticed, there is a reset button and what looks like a headset jack under the left hand sd card cover.
[MTCB Android Head Units Q&A] webdude12:
Apparently there is a tool called: RKAndroidTool

That is made to work with RK3066 Chips. It supposedly allows us to root and install CWM Recovery (There is a generic RK3066 one). I will have to look more at this once I get my unit and have time to Play. :)
[MTCB Android Head Units Q&A] dave93cab:
Rk3066 is popular on the android sticks, people used to run finless ROM. There were a few different combinations of wifi/Bluetooth chips that came with the 3066 sticks. Maybe someone can post up the dmesg output after startup? Or do you need root and busybox for that?

Might not be too helpful sorry!
[MTCB Android Head Units Q&A] pakidermo5000:
Yes RK3066 is very popular, and it can even run a dual Android-Linux.

I am quite sure we will be able to get root access. My main concern is whether we will be able to modify the ROM to reduce the boot time.

Does any one have any idea about that ? [MENTION=5389783]donaldta[/MENTION] ?
[MTCB Android Head Units Q&A] webdude12:
Should be able to reduce boot time some by reviewing the init.d and seeing what all is called in it. Some it might be able to be moved to after startup. Also poorly designed boot animations can cause boot time to be longer then needed, I have seen upto 5 seconds added just for that.
[MTCB Android Head Units Q&A] pakidermo5000:
Ok. I hope you are right.

But I have been following another thread, the AN-21 U, and they have not been able to to create a new ROM because I think the boatloader is still locked, and also because of the drivers that control the MCU. I wonder if something similar can happen with the huifei.
[MTCB Android Head Units Q&A] webdude12:
The fact that we can flash custom recovery, makes me believe we will be able to do at least basic custom roms. Not sure we can modify kernels, etc, but should be able to tweak a few things in general configuration. My goals are to do this:

Provide a stripped down rom. Remove any BS software the vendor maybe putting on there.

Tweak Configuration Files as see fit

Replace some of the core android files with updates as see needed.

Move common programs out of the /system directory (i.e. YouTube, Gmail, etc). This will allows these to be un-installed from the Play store if wanted, and not have to worry about the upgrade process.

In time, if we can do Kernels, etc, it would be awesome, but if I can achieve the above, I will be a very happy customer. :D
[MTCB Android Head Units Q&A] gangsta101:
Has anyone in any of the threads managed to connect another battery (I'm thinking a very small deep cycle battery) with a battery isolator to any of these android units? This should stop the units having to reboot every time the car is started. Just a thought.
[MTCB Android Head Units Q&A] blankers:
I am retired, so I spent most of the day yesterday playing with my new toy !

Instead of starting the car each time, I just turned the key to the first position which powers the unit. I'm not sure exactly how long I did this for...but at 6.0pm I wanted to go out in the car and......wtf !! it wouldn't start..........had to jump start the car.........

These things draw a lot of juice...I don't think a small battery would be enough.

---------- Post added at 10:35 PM ---------- Previous post was at 10:25 PM ----------

We really need to root this unit..

I have already hit the first snag.The play store doesn't show all available apps. I searched for Poweramp, Navfree, GPS Test, to name but a few....and nothing.

I have an android phone and compared to it, I would say only 50% of the apps are showing.

It's obviously to do with what device id it sends to the Play Store. If we had root we could change this.

I have emailed my seller to see if he it can be rooted and also whether he will supply a backup of the firmware......will be interesting to see what he says...

p.s You can download the apps on a p.c and sideload them into the unit, so it's not the end of the world, but it would be nice to fix this...
[MTCB Android Head Units Q&A] gangsta101:
It figures. With such a large screen and its rated power output, it should need at least a 45AH Battery if you like to run stuff with the engines off. Also as long as you're not supplying music for an entire block party, that should be more than enough. The battery isolator should keep your "main" battery free to only start the engine, and reconnect the stereo battery to the alternator when the engine is running
[MTCB Android Head Units Q&A] blankers:
I have been talking to my seller, Keylo, and she tells me that they are the manufacturer of this unit and the other sellers are her customers.

I have asked her to join the forum and introduce herself.

This would be great for the community. I'm sure we would get better information and backup from her than anyone.

Hopefully she will do this......
[MTCB Android Head Units Q&A] 1-2-Hak:
Here is the original
[MTCB Android Head Units Q&A] feistl:
Hey guys,

Been following this thread for a while, decided to post :).

Do we have any updated ETA for when the 1024*600 screen will be available? (I did see posts mentioning July, but then some other posts showing some units already having this option?)

I am after a generic universal non-can version, which i would like to use with steering wheel controls (That work based on resistance changes). I'm guessing i will need something like the Axxess ASWC-1 mentioned earlier?

Other than that fast boot times would be nice (30 seconds is too long, ~15seconds is still too long but would be bearable).

Cheers
[MTCB Android Head Units Q&A] nexgen10:
Just a note on the mirrorcast features.

They are pretty much useless. Aircast aka mirrorcast aka DLNA works via ethernet communications, wifi or wired. So unless you're planning on driving around with a wireless access point in your car, it's really not feasible. Your phone in hotspot mode is natting the connection from the radio through to the internet, same with a hotspot, and they isolate the connections (protected wifi) so you cant communicate with any other guests on the node.

fwiw, I was able to get multiple mirrorlink (aircast) clients to work, including a free one from clockworld.

---------- Post added at 04:24 AM ---------- Previous post was at 04:22 AM ----------

I think there is a native interface. The radio has an app that maps SWC input to functions. There is an unused harness plugin on the back of the unit, so I assume thats the SWC connector.
[MTCB Android Head Units Q&A] DDQW:
Is the 32gig limit for real? I would love to use bigger usb sticks as storage. Has someone already tried?
[MTCB Android Head Units Q&A] nexgen10:
Yes the 32gb limit is real.

http://en.wikipedia.org/wiki/Secure_Digital#SDHC
[MTCB Android Head Units Q&A] _StormZ_:
Does anyone know what this Chinavasion unit is based on, as it's 1024*600.

http://www.chinavasion.com/china/wh...ve_Touch_Screen_GPS_Wi-Fi_3G_Bluetooth_2_DIN/

Also "OS Version: Android 4.0; CPU: Samsung SPC210; Processor Speed (max): 1GHz; RAM: 512MB".

$235. Worth it?
[MTCB Android Head Units Q&A] kidum:
tks tks tks tks tks tks
[MTCB Android Head Units Q&A] grendude:
rk3288 or rk3188 or rk3066 ?

Any info on newer rockchip?

When will these use the rk3288 or even the rk3188?

not just the now old rk3066.

Also, when can we get better screen resolution than 800x480?

Any news would be appreciated.
[MTCB Android Head Units Q&A] webdude12:
Having had this unit, I can honestly say the RK3066 is plenty powerful for this unit. I experienced no lag in the performance on apply application installed. And I installed some crap just too see performance.

As far as the resolution, I have all but given up hope. Anyone I asked affiliated with Keylo, etc my questions go 100% ignored. Im starting to think because they did not want us to have root or unlocked bootloader / recovery, and now that its been done, they have abandon helping any one from this forum in a technical aspect. Its sad.

I pointed this out to Keylo in the past. I understand they want to protect their intellectual property, but in the end they are hardware makers. Look at the best selling phones. The ones that top that list are typically the ones that have custom roms for them. Sales come from that fact directly and indirectly. As a IT consultant in my real life, everyone is always asking me what phone to get. (i.e. parents, family, friends, etc). While I know most of them will never need to root and load a custom rom, and most I wouldnt let them do it cause they would cause more damage then good, I always recommend phones that have that ability. And no its not always the latest and greatest I recommend. But phones that are harder to gain access too, like the Sprint MotoX (has very little development), I will never recommend to someone even though I own one as test / development device.

At the end of the day, they are a hardware company. Granted they outsource these units as kit, but their goal is to sell hardware. They develop custom software to do that, but as soon one of these companies learn to embrace the community, they will quickly become the largest player in this market.

If I could find somewhere to get the kits, I would start building these units myself.

SIDE NOTE: I do not have one of these radios anymore to do this, but if someone is brave, maybe they could take high resolutions pictures of every board, and we could start tracking down PCB numbers, etc and find out who is supplying the kits to these manufactures. :)
[MTCB Android Head Units Q&A] nexgen10:
I took a bunch of pictures last night of the unit in various stages of dis-assembly. There's also the decompiled MTC apk in here as well.

https://drive.google.com/folderview?id=0B8CW6eBK4XYkZHFITE9icEx5NEU&usp=sharing
[MTCB Android Head Units Q&A] 1-2-Hak:
I agree - I have even asked that they resign my modded MTCManager.apk but they say they dont understand.

I am so close to get some good mods going but constantly get bootloops.

I have found that the framework-res.apk and the MTCManager.apk are all signed with the same key to run with shared userid as system

<manifest android:sharedUserId="android.uid.system" android:versionCode="17" android:versionName="4.2.2-root.20140410.172857" android:sharedUserLabel="@string/android_system_label" package="android" coreApp="true"

<manifest android:sharedUserId="android.uid.system" android:versionCode="17" android:versionName="4.2.2-root.20140410.170819" package="android.microntek.service"

The systemui.apk is signed by same key but doesnt run as the same shareduserid

<manifest android:versionCode="17" android:versionName="4.2.2-root.20140410.172833" package="com.android.systemui" coreApp="true"

This means that you should be able to make changes to these files and just resign both framework-res and MTCManager.apk (need to be same cert to be the same shareduserid) and you should be good to go.

What is happening is as soon as I change one of the files and resign it still bootloops.

Maybe the kernel is checking the signing? - havent heard of this. But I feel like I am so close.......just need some more developers input....

---------- Post added at 08:53 PM ---------- Previous post was at 07:56 PM ----------

Anyone here that can help me try via an xposed module?
[MTCB Android Head Units Q&A] grendude:
Thanks for getting back to me. My concern over the rk3066 is boot time.

From the videos I've watched and what I've read ~40 seconds is normal.

Having taken a look at some of the google drive photos, it looks like the rockchip cpu is clipped in much like laptop memory.

If that is the case, maybe we could upgrade it to the newer rk3188 or better yet the new rk3288.

(if we can find the manufacturer...)

Thoughts...

---------- Post added at 10:30 PM ---------- Previous post was at 10:02 PM ----------

Thanks for all the images.

Did you happen to get the full part # for the Rockchip board?

It looks something like

MTG RK3066 REV0.3

Did you remove the chip?

Is there anything written on the back side?

Do you have an image of the back side?

Thanks!
[MTCB Android Head Units Q&A] webdude12:
Here is another idea to find the source supplier. Most developers will include their domain name in the package name. Maybe we need to start breaking down the packages of the android and looking for domains, and see if we get lucky.
[MTCB Android Head Units Q&A] ChillyCat:
Was notified yesterday by Kaigele, that it's probably going to be [vaguely] weeks, before shipment can be processed. [canceled order]

Placed another order with sharingdigital.com. Model number: FOD-7303GDA -- Ford F150

By the model numbers being so closing similar, I'm assuming it's just another cloned Private Label brand.

The 4.2.2 GUI looks to be identical. Prices were a little lower too.....