yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] Oldpapa49:
http://www.autopumpkin.com/car-dvd-players/android-dvd-player/8-inch-android-car-dvd

????
[MTCB Android Head Units Q&A] typos1:
youve linked to a long list of several different devices, some are MTC some are not . . .
[MTCB Android Head Units Q&A] Oldpapa49:
Find yours unless you know exactly the mtc you have.

---------- Post added at 08:03 PM ---------- Previous post was at 08:01 PM ----------

Sorry typos1, did not read the post. Disregard my post.. tired.
[MTCB Android Head Units Q&A] Mannikkk:
Huh :eek: the Link should have directed u to the device which is shown in the attachment... :P
[MTCB Android Head Units Q&A] typos1:
Ok, that one is MTCB.
[MTCB Android Head Units Q&A] jaume2971:
sd card does not work

My sd card does not work, can i upgrade from usb? Same steps

thanks
[MTCB Android Head Units Q&A] webdude12:
Its all good. First time I have every had to use the AMX Buyer's protection. I must say Im very impressed with this process. I called them explained the situation. They said not a problem, especially with it within 30 days or receiving the item. They told me to box everything up, emailed me a call tag from UPS, and asked if I wanted UPS to pick it up or I could drop it off. With my work schedule, I elected to drop it off. They told me once I dropped it off, to go on my account and marked the item as shipped in the portal. I did that, 45 seconds later I got an email saying a credit for the whole purchase amount had been applied to my account.

Like I said I will considering ordering one from Keylo at a later date. I want there to be some track record proven that this is not an ongoing problem, and to see where the developers get on breaking the bootloader. I have on good knowledge that the bootloader has been unlocked on another unit, the guy that did it though is waiting for more testing and an easier software tool to apply it before releasing. Even this this unit has better features, the ability to do custom roms might way sway my decision on what to purchase.
[MTCB Android Head Units Q&A] pakidermo5000:
It is a pitty that you are not interested in it anymore. You got root so quickly..., I had a great expectation on unlocking the bootloader and getting full control on the unit. I am not really good at cracking bootloaders (never done it) but might try something if I knew how.

I am not an expert on Android, but I have some notions of programming and Linux. I am not afraid of doing harware mods either, if that is necessary to get a hot usb connection to the unit.

Could you give us some hints/links on how to do progress with the bootloader ?

cheers.
[MTCB Android Head Units Q&A] pakidermo5000:
Can this be a good starting point ??

https://gist.github.com/sarg/5028505
[MTCB Android Head Units Q&A] webdude12:
Its not that Im not interested in the radio anymore, I just cant do much without having a unit to test with. I have never cracked a bootloader myself, but I have played with encrypted software on other hardware before. The thing about encryption on "standard" hardware is, at sometime during the process, the code has to be un-encrypted to run.

To put it in simple terms, If I want to give you instructions, I can not come upto you and give you instructions in German, without either you knowning German, or providing a translator for you. Well the hardware does not know German, which means its translating itself before copying itself to ram to be run.

So somehow the ram has to be dumped at so the raw code can be reviewed and either look for a security hole or be able to be re-written and re-flashed to the unit. The link you posted, it looks like he is writing a way to dump the ram to hex code. This hex code then needs to be translated into Assembly language opcodes for the rockchip. This is what I was having trouble finding from just quick google searches.

Once you can dump our boot.img and opcodes can be found thats where the fun would be begin.
[MTCB Android Head Units Q&A] pakidermo5000:
Ok. Iam busy this weekend but next week i will try to get the boot.img using the method on the link. Are the files provided by keylo of any use in this sense?
[MTCB Android Head Units Q&A] webdude12:
Use the ones from the Wiki, I know they are valid, and no reason can use that to obtain the boot ram files.
[MTCB Android Head Units Q&A] kevinnku20:
Webdude and all,

One of the things I notice from your picture is that the black cloth tape did not seem to be applied to those connections. I have another Chinese unit that's windows CE which I am replacing with this one. The CE unit is pretty good quality and the manufacturer has an excellent track record and warranty but they do not sell android units. In that unit, they taped everything with the cloth electrical tape, and I'm wondering if it was to mitigate this sort of problem. When I get mine (at some point.. because they are backlogged) if it's not there, I was thinking to adding some of the cloth tape for reinforcement before installing it into the car. My guess is the adhesive failed on your connectors because they had a bad batch but used them anyway. Taping them down real good with tape that is rated for outdoor electrical use should prevent that from happening, even if the adhesive fails on the connector.

Granted, we should not have to do this; but having a background in professionally sourcing electronic components from China, I know they cut any corner they can. It does not surprise me that they asked you to glue it back down, that's typical. Many of these manufacturers have little to no quality control and there are zero consumer protections like there are in the states. You were smart to use your Amex for this which brings up another point for others to consider when buying something like this.

The group I bought from (I believe it is the same manufacturer that Kei Lo works for) was really pressuring me into paypal, or to wire transfer funds rather than using Alibaba's escrow service. If you are not using an AMEX, DO NOT DO THAT. Paypal only protects purchases that are not as described for E-bay purchases.Which means that even if they ship you a pair of dirty socks in place of the $500 radio you ordered, Paypal will not investigate a claim. Wire transfer is about the same as sending cash, and there is little recourse there as well. Likely you will get your item as described, but when/if problems come up like webdude's any other method of payment offers 0 protection. If you're like me and don't have access to Amex, Discover is your next best bet. I've also had really good luck with my Capital One card in these situations recently.

Sorry for hijacking the thread for that, but I thought it was important to point out.

Finally, Is there a way to update the original post with your experience, I had actually bought this unit before I got to page 19 when you started having problems. It probably wouldn't have stopped me from buying it anyway, but that sinking feeling in my gut after I saw your post before I saw the pictures was not fun :rolleyes:

Edit:

Never mind, I see that the first post was already updated with the black screen issue. My bad, I shot from the hip after a few days absence.
[MTCB Android Head Units Q&A] blankers:
Hi, there, and welcome to the thread.

We are happy for you to join in the discussion on these units. We are a friendly bunch and welcome any contribution you can make.

I have had my unit for 3 weeks now and am still very happy with it. I have not had chance to open it up yet and check this connector issue, but will do soon and will post the result.

I ,for one, have not heard of Discover...is it a type of credit card, or a service from someone ? Maybe you can tell us more.
[MTCB Android Head Units Q&A] webdude12:
I highly suggest you use a credit card like AMX, Discover, Capital One that gives you either buyer protection or extended warranty on your purchases. As far as the tape used, this is commonly called gaffer's tape. It's not cheap, but unlike some duct tape will not conduct electricity so therefore is safe to use on the circuit board
[MTCB Android Head Units Q&A] pakidermo5000:
Do not use the update file

DO NOT USE THE UPDATE FILE. IT IS FOR ANDROID 4.0, NOT 4.2.2

Hi, I just asked Keylo what was the file he/she sent me. After checking with the engineer, it turns out that the file is just a file to create an update SD card, but it is for the Android 4.0 unit, and not the 4.2.2. So, please do not use it.
[MTCB Android Head Units Q&A] ericpaulyoung:
My screen just went completely black... Keylo, what can I do now?

EPY
[MTCB Android Head Units Q&A] Cruze2012:
Chev Cruze Model 7047

Thanks to Keylo and everyone who has contributed so far. I purchase a system from LSQStar and recieved this model 7047. Apparently they did not ship the USA version. I'm still having issues with the Canbus support, but they were able to send me a firmware update to fix SWC. However, my factory message screens in the instrument cluster above the steering wheel still have Chinese translation and would like to get back the English translation. None of the vehicle chimes or factory audible work either, including the rear parking assist beeps. Are these feature supported in the canbus setup and what can I do to correct it? I was able to access the factory settings with the 126 password and canbus is set to GM(Raise). The Radio was set to Russian and changing it to America 2 allows the statons to set to exact frequencies. Otherwise frequencies were off by up to .04 for FM and .08 for AM.

Thanks
[MTCB Android Head Units Q&A] ericpaulyoung:
Green Point is shipping me a new TFT board. Their service has been very fast and professional. Also, Keylo from HuiFei offered to get me a replacement board for cost if it is needed. Great customer service from both companies so far.

EPY
[MTCB Android Head Units Q&A] jereid:
Shipment Prepared

I just got notice that my unit is being packed for shipment and I'll be receiving tracking info the next couple of days. Four days ahead of promised schedule. I'll post shipping updates if there is interest in the details.

---------- Post added at 10:54 PM ---------- Previous post was at 10:49 PM ----------

Does it void warranty to open case to check the clip integrity?
[MTCB Android Head Units Q&A] Orisai:
Not as long as he's asked to do so by the manufacturer.
[MTCB Android Head Units Q&A] Zaphod-Beeblebrox:
I've been chasing various typs of GPS/multi-media in my vehicles for years (as I suspect most anyone who is reading this thread has). I've got an ouko 6.2" that I liked, but it has resistive screen, and of course those units are a tad slow. I took it out and current have an Asteroid Classic matched to a LG 8.3 tablet mounted on a RAM Mount. However, I want to go back to a complete in-dash unit.

I've been chasing down a few variations, and this one looks promising. Can anyone point me towards a universal 2-din preferably with a 1024*600 screen and NO DVD Player (I prefer the largest screen possible and haven't used a DVD in years). I also prefer an actual volume knob, but that's not a deal killer.

Thanks
[MTCB Android Head Units Q&A] Orisai:
What car do you have? Depending on your car's dashboard you could put an in-dash unit designed specifically for your car
[MTCB Android Head Units Q&A] Zaphod-Beeblebrox:
My vehicle takes standard 2-din radios. Doesn't need a specific built faceplate.
[MTCB Android Head Units Q&A] Orisai:
You need an universal one, then:

http://kaigele.en.alibaba.com/produ...r_gps_navigation_system_factory_supplier.html
[MTCB Android Head Units Q&A] sciallo:
Uhmm, careful, that is a Toyota version. Way wider than standard 2 din. Nice it has a 8 inch screen, but will NOT fit standard 2 din opening...

---------- Post added at 12:13 PM ---------- Previous post was at 12:00 PM ----------

Here is some universals:

http://www.alibaba.com/product-detail/HuiFei-Universal-2-Din-Android-4_1684831223.html

http://www.alibaba.com/product-detail/Huifei-DIY-illumination-100-Android-4_1738227019.html

http://www.alibaba.com/product-detail/HuiFei-Pure-Android-4-2-2_1735529610.html
[MTCB Android Head Units Q&A] Phillips84:
Reverse camera Issue

-didnt use the can bus

Had the car with auto electrician this morning and the LED light now power on when lights are turned on and the aerial is sorted. Turns out that the issue with the sound dropping was the radio continuously looking for a signal so that all sorted now as well

only one more problem to solve and its fully operational i have a honda stream 2007 RN6 and it has a factory fitted rear camera. The guy at the auto electricians was trying to tell me that i will need a connector for the camera block from old unit ? surely it can be just hard wired?

anyone faced the same issue with a honda?
[MTCB Android Head Units Q&A] typos1:
How did you solve the radio issue, with a booster ?

I would have thought you could hard wire it, but we really need more details, pics etc.

TBH if you fitted it yourself it would be much easier to help - no third person to have to communicate through.
[MTCB Android Head Units Q&A] parazit26:
does no one knows?
[MTCB Android Head Units Q&A] MJ DOOM:
Anybody know?
[MTCB Android Head Units Q&A] DWhite456:
I just got my unit and it ia KGL v1.77 8". The unit shipped fast and so far seems to be working. I have it just sitting in the bin in my VW.

I know this sounds basic but what are some of the 1st things I should do with this unit?

Do I need to upgrade to v1.86 if the wifi is a bit shotty? Is root needed if I want to sideload some APKs?
[MTCB Android Head Units Q&A] typos1:
Yes - the obd plug is much smaller and more easily hidden on a usb to obd lead than it is on a bulky bluetooth obd plug and it is very, very easy to hide a wire (behind the console or dashboard) from the obd port to the stereo.

Most cars of all types have their obd plugs in the places you mentioned and unless car manufacturers start putting the obd sockets in really stupid places like in the boot, or underneath the car, a usb to obd will always be the easiest, cheapest, fastest, most error free and most secure way to connect to obd.

Plus bluetooth is designed for portable devices, neither the car's obd system or the headunit are portable, so you are getting lots of disadvantages with absolutely no advantages, a bit like using wifi on your desktop - the desktop is not easily movable so why would you use slower, less secure wifi when lan is much faster and more secure ? !

Its also a sledgehammer to crack a nut - all the extra hardware, software and tech (including a radio receiver and transmitter) a bluetooth transmitter requires to work is total overkill when a simple wire gives better results, what a waste of money and technology !

Bluetooth is great for using your phone with a car kit, or sending a file to a friend's smartphone, but in this situation I just dont get it.

I would have thought that as a developer you would understand exactly where I m coming from.

Still, it was only a suggestion and my opinion - each person can do as they want, several people have thanked me for pointing out usb to obd, people who are happy to use bluetooth for obd are not harmed by my suggestion. :)
[MTCB Android Head Units Q&A] parazit26:
just reinstalled my unit (v.1.86 - mcu.img/update.img) everything is working except of the extermal mic. It worked before with out a problem. Does it help if i unsolder the internal mic?
[MTCB Android Head Units Q&A] agentdr8:
That's the theory. I know some have been looking into doing this, but no one has reported back yet on its efficacy.
[MTCB Android Head Units Q&A] typos1:
Was just killing some time searching the internet to see if there were any custom firmware for RK3066 tablets and found this CM 10 based ROM.

Wonder how much work it would be to mod it for these units ?

http://xdaforums.com/showthread.php?t=2108704

Cant see that it would be that hard to do, but I m no developer and I m sure one would tell me it would take a lot of work !
[MTCB Android Head Units Q&A] agentdr8:
It would probably be easier if we had source for the KGLs. At the very least, kernel source. Plus to get all the MTC stuff working, which is required to communicate with the MCU, might be quite an undertaking.

I think if it were a CM11 build there might be more interest. Or if one of the rom chefs out there had one of these headunits to dev/test on.
[MTCB Android Head Units Q&A] Skitals:
I would love for you to link a usb obd interface that is less bulky and cheaper than this bluetooth unit: http://www.aliexpress.com/item/Supe...stic-Scanner-Tool-Switch-Works/648970351.html

Wired is always prefered when available, but in this case it isn't without its downsides. By all examples I've found, USB interfaces are actually bulkier. In my VW, the OBD port is right under my left knee, and any larger unit... or any unit that has the cord come straight out... would be visible without a right angle adapter (another expense).

A USB interface would also use up one of my two rear USB ports. Adding a powered USB hub to offset this would add even more expense and wiring.

A bluetooth unit can also serve many functions by being used and transported simply between multiple vehicles.

We all get that you love your USB interface. Not all of us have the same vehicle, uses, needs, or requirements as you.
[MTCB Android Head Units Q&A] parazit26:
yes i read that in some earlier posts but its a while ago now. just wonder, why it does not work anymore eventhough it work before with the same mcu and update file.

btw. do you use the set loud.apk or the mtcxposed to set Loud on booth? i have them both installed but i dont get the loud function on boot.
[MTCB Android Head Units Q&A] elcolombia17:
I installed viper4android and gave me a real advantage in sound eq, but is no compatible with poweramp, anybody have the same issue?

Enviado desde mi K1 turbo mediante Tapatalk
[MTCB Android Head Units Q&A] typos1:
Ah, forgot there was no source code, but was assuming all the comms between Android and the MCU would remain the same, that just the Android bits would be altered, CM11 would be good, but CM10 would surely be better than stock 4.2 ?

The hub does not have to be powered, a non powered one will do.

Many people on xda agree with me, check out the AN21-U thread, there are countless similar posts to mine.

You would have to move the headunit to another vehicle as well as the bluetooth obd, so it makes no sense to say that it can be used in other vehicles. As for "many" functions", there is only one function an obd connector has - to communicate with a car's on board diagnostics.

I was making a purely scientific arguement that usb was better, cheaper, faster and that adding complex technology to something that doesnt need it does not seem a good idea, but I added that was the way I see it and that people are free to do what they want. I also added a smiley to convey no malice was meant (as did Alex to his post which was the one I was replying to).

There really was no need to add sarcasm to your post and say that "I really love my usb interface", that is not constructive.
[MTCB Android Head Units Q&A] coyttl:
Uh,. what? Torque runs on Tablets and Phones just fine. Take the BT OBD with you, plug it in another car, and you're good to go!
[MTCB Android Head Units Q&A] typos1:
I know, but the same applies to a usb/obd lead.

Certainly if you use Torque on your phone or tablet I can see advantages in using bluetooth, it is in this particular scenario where the headunit and car obd port are fixed in one place - neither are removable (well not easily anyway).
[MTCB Android Head Units Q&A] agentdr8:
I use XposedMTC. If you go into Amplifier settings, it should have the checkbox marked after boot.
[MTCB Android Head Units Q&A] coyttl:
Neither my phone or tablet have a HOST USB port. Client, yes, but not host.

In either way, I don't care, I'm going wired. But when you post something uttely misleading (taking the head unit with you??) I had to say something.

---------- Post added at 06:07 PM ---------- Previous post was at 06:05 PM ----------

I use Viper with Poweramp on one of my older devices, which I use for Music playing now, and they work great together. However, I have to turn Direct Volume Control off.
[MTCB Android Head Units Q&A] typos1:
Youve totally missed the point there - both the obd port and the stereo are fixed - bluetooth is designed for portable devices, ie so you can move around and still have a connection, you are not going to take the headunit out and move around with it whilst communicating via obd !

You also missed what else I said:
[MTCB Android Head Units Q&A] Skitals:
Patiently waiting for a link to a better, cheaper, and less bulky USB interface than the BT interface I linked. I'm not arguing the merits of a wired interface... but the Bluetooth is under $7 shipped, smaller than any USB interface, and can easily be removed and used in multiple cars. I use mine all the time to read CEL codes in friends cars via my phone.
[MTCB Android Head Units Q&A] guimolle:
Hello, i have a Witson device Android 5.1 A5637 for my Peugeot 508 car.

But since i have change CanBus protocol in advanced setting by No Canbus my device don't restart (No picture on the screen) !

I have not physical button.

Maybe anyone can help me please ?
[MTCB Android Head Units Q&A] typos1:
We need to know what device you have first, go to settings/about device and tell us what it says - Witson are a seller only.
[MTCB Android Head Units Q&A] guimolle:
I made these pictures before the problem. Now when I start my car I only have a black screen !
[MTCB Android Head Units Q&A] typos1:
OK, a link to where you bought it then ?
[MTCB Android Head Units Q&A] guimolle:
hpics.li/903b832

hpics.li/a71efde

Copy these links to see the screenshot of my MCU and serial number

---------- Post added at 02:57 PM ---------- Previous post was at 02:56 PM ----------

It is this product.

witson.com/en/displayproduct.html?proID=102698507
[MTCB Android Head Units Q&A] typos1:
I just wanted to verify it was MTCB, it is.

You will have to search this thread for a solution from memory you have to short a pin on the MCU.

You could also search the forums to see if it has been separated out into a thread.
[MTCB Android Head Units Q&A] guimolle:
It MTCD unit.

You think I can find a solution in this thread ?

---------- Post added at 04:19 PM ---------- Previous post was at 03:33 PM ----------

Somebody can help me to identify the short pin on the MCU ?

Thanks
[MTCB Android Head Units Q&A] typos1:
Ah, well probably no, would be better to try the MTCD thread first. The MCU software is different on MTCD units, not sure about the actual MCU. If its the same MCU and you cant find a solution in the MTCD thread then whats in this thread MAY help.

Try the MTCD forum first, if they cannot help and you can find out whether the MCU is the same then search this thread for the info on what pins to short. But not now you need to try the MTCD forum first and identifying the pin will ONLY help if the MCU is the same. This thread is for MTCB/C units.
[MTCB Android Head Units Q&A] charlydj2010:
PDC does not work - BMW E90 KLD MCTB

Hi, I have a KLD head unit for BMW E90, originally only the rear PDC sounded, not the front. I changed the factory ROM for another and the PDC stopped working. After trying many ROMs and different MCUs, I can not get it to work. Everything in the factory settings is correct, CANBUS 24 BMW (union), radio TDA7066 ..., all correct, but I do not get it to work.

My HU is MTCB dual core.

My question is, is it the MCU that controls the PCD, the HU or the CANBUS box? Is there any solution?

I would appreciate any response. ;)
[MTCB Android Head Units Q&A] typos1:
Have you tried all the BMW CAN Bus options ? There is KLD9 v2.91 that is specifically fro E90 units (but works on others too), thing is it may not work with 4.4.4 only 5.1.1 which isnt available for dual core units, worth trying though.
[MTCB Android Head Units Q&A] charlydj2010:
Hi, thank you very much for your quick response. I have now tested with the MCU KLD9 v2.91 and the PDC does not work either. The radio is also lost. The radio problem happens to me when I use MCU KLD1, 2, 5 and 6. Only with the KLD MCU without numbers, the radio works fine. Any more ideas?

Many thanks