yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] parazit26:
Hi guys,

awesome thread! Read almost all of it and thinking now switching from Nexus 7 to one of this HuiFei units.

Does anyone know when the 1024x600 screens will be out?

Has anyone tried connecting an arduino to the car radio? That's the only way i can get the steering wheel control working in my car.

In this case i guess it should be working with no problems, because the unit can be rooted.

Can anyone answer my questions?

Thanks
[MTCB Android Head Units Q&A] Viper87227:
Can someone tell me if this is the same unit being discussed here: http://www.aliexpress.com/item/Pure...0-GPS-Car-DVD-Player-WIFI-Map/1876114793.html

Looks like it. Same specs best I can tell, but I'd prefer to be sure. If this doesn't look right, whats a better place to order from. I'd prefer the Hyundai Accent specific model, but if something doesn't look right I can get the universal. I've got a Parrot Asteroid Smart and it's such a piece of crap. I'm looking to replace it with something that (hopefully) works a little better.
[MTCB Android Head Units Q&A] MMouse:
yes I flashed 2 days ago, not sure if it worked before, but google voice search now uses my build in mic

Google voice search did not work before as I got an app error message
[MTCB Android Head Units Q&A] edding7:
Thank you very much for your answer. That's is a important point in the decission to get this unit.

Can you confirm that you don't loose the info that is displayed in the original screen of the car?. A seller from aliexpress said me that you can loose this, because the original screen in BMW is handled by the car. I don't beleived him, but i want to be sure.
[MTCB Android Head Units Q&A] xrapidx:
Is this the same unit/manufacturer, the model number is not in the wiki? http://www.aliexpress.com/item/Dual...Screen-Pure-Android-4-2-2-Car/1841952293.html

I'm interested in one for a Suzuki Jimny, but they don't seem to have a specific model.
[MTCB Android Head Units Q&A] typos1:
As they are all the same unit apart from the different face plates, why dont you buy from the factory and ask them to supply you a BMW unit but in a universal case ?

Or maybe buy a universal and then just update it with the BMW version's update ?

As says, Sengir youre not gonna loose the info from the screen in the dash ! Think about it, replacing the stereo isnt gonna do that is it ? ! Just like it wont stop the speedo or the rev counter working.

It is possible to hack the CAN Bus system (google can hack, and CAN opener) people have done it before. Shouldnt be that hard once you know the protocol, to make android communicate with the Bus. I know that Alfa Romeo dealers were trained to wire in universal Kenwood stereos to some model's CAN Bus systems so sat nav directions, caller's phone numbers, track title etc displays on the dash screen like they do with the factory fit stereos, just a question of knowing what signals to send the the Bus. Know of 2 people who have hacked into the dash display so their ipod's show the track listing on the dash display.

http://www.canopenr.com/

http://www.canb.us/

http://theksmith.com/technology/hack-vehicle-bus-cheap-easy-part-2/

http://hackaday.com/2013/04/28/odb-ii-hacking-using-an-android-tablet/

Links above should help you on that.
[MTCB Android Head Units Q&A] Dareksa:
I did not lose any information from the onboard computer becaus in my car is another screen for car computer . It works completely independently. I don't know how it looks in BMW.
[MTCB Android Head Units Q&A] typos1:
Its the same in every car - no-one is going to loose any info from their car because they changed the stereo !!
[MTCB Android Head Units Q&A] dark alex:
I flashed the update which shoul speeed things up and now I have a weird issue: When I open iGo my music stops. As soona s I switch to home screen or any other app it is running again but I will not hear iGo's instructions then... Anyone else haveing this?

Also there is no reverse-signal from my can box to the radio... (As well as my indash monitor is not supported unfortunately)

Anyone having that issue, too? Not related to the update btw!
[MTCB Android Head Units Q&A] pakidermo5000:
Maybe the settings for GPS were changed. Go to settings, GPS and there you can choose what the radio does when GPS command are issued (mix, stop other sound... etc).

Not sure what you mean, what do you mean by reverse-signal ? Do you mean the can bus is not sending signal of reverse mode ? and the unit does not show the rear camera?
[MTCB Android Head Units Q&A] pakidermo5000:
This is weird. Android should be the same for all units, only MCU might vary. What unit do you have exactly, and where did you buy it ? There start to be a lot of sellers selling what appears to be "the same unit" but the fact that the CPU is the same, does not mean the rest of hardware is the same...

Well, you did the other way round. It is, install TWRP, make sure you can, then reflash old recovery and update.

Did you follow 1-2-Hak instructions to flash TWRP ?
[MTCB Android Head Units Q&A] pakidermo5000:
Mine worked before the update and after the update. But the sound quality of the recorder s*cks. There is always a pinch sound on the recordings, does not matter whether I use micro or the embedded micro of the unit. Has anyone had the same issues ? or your mic recordings are ok? I also tried different apps. Same result.
[MTCB Android Head Units Q&A] pakidermo5000:
Well this is not true. I lost some info on the dash of my car. Audi A3 2004.

I had a 1DIN radio, switched it for the HuiFei.

Before, the dash of my car showed the radio station that was playing at the top part of the screen, below it shows temperature, opening doors, etc. So, the part that used to show the radio stations, now is black, it gets no signal (I guess it is what they mean by 1-way canbus). The rest still works ok.
[MTCB Android Head Units Q&A] brownstein72:
aliexpress.com/item/New-come-Android-4-2-car-DVD-GPS-for-Honda-Civic-left-2006-2011-capacitive-touch/1814246865.html

^That is the one that I got. I did a nandroid backup to external SD then flashed the updated update.img and mcu.img, after which, my hardware buttons did not function correctly.

I tried to flash TWRP but am somewhat of a noob and was able to finally adb over wifi into the unit but when it came to doing the actual flash (with both files in /dev/) it seemed to hang for quite a while but didnt take (gave no warning).

The store got back to me and sent me their mcu.img (original that came with the unit was v1.73, the new one they sent seems to also be v1.77 like the one posted in this thread). I put the update.img from this thread and the new mcu.img that they sent me on to my GPS SD card and it prompted me to do the update. after updating, my hardware buttons were correct again.

The funny thing is that my boot time was 18 sec when I originally got the unit, but after stupidly flashing the the updates from here, my boot time is now 24 sec.

I only flashed the update because my wifi reception is ridiculously weak, I put my apple extreme router right next to my car in the garage and only got 1-2 bars, when I enable my wifi hotspot on my Note 2 (slimkat rom) I get one very weak bar and the phone has to sit on my dash directly above the head unit just to get that. The update did not fix this issue, the merchant mentioned that they may be able to send me a wifi dongle to hook up to the unit (how does that work if it has wifi built in?).

On another note, I cannot seem to get bluetooth tethering for internet to work (thinking the connection will be stronger and more reliable vs wifi hotspot), my phone pairs fine over bluetooth but cannot share internet over bluetooth. Also, USB tethering doesnt seem to work, at least I cant find the option to use the internet over USB from within the head unit (the phone is set up properly for both of these instances).

I am trying to get them to send me the original update.img and mcu.img that came with my unit as even the radio seemed to work better for whatever reason and the boot time was 18 sec. I can post those files here for others if you would like.

Here is a video with my settings screen and build numbers.

drive.google.com/file/d/0B8imRb1-_opTNUZCLVRYRWhHSDA/edit?usp=sharing

edit: If I can just get TWRP installed, I am hoping to flash that original backup I did to put everything back to stock. Will that work for both update.img and mcu.img?
[MTCB Android Head Units Q&A] marek2k:
On Aliexpress

Model Name: S-DVD7816GDA

Resolution: 1024X600

aliexpress.com/item/Sharing-Digital-7-inches-Detachable-android-4-2-car-dvd-player-gps-Dual-core-Powerful-A9/1713222631.html

I don't know if it's the same platform... :confused:
[MTCB Android Head Units Q&A] typos1:
I said : "No one is going to loose any info from their car", the info you lost came from the STERO, NOT the car, so you DID NOT loose any info from your car, you lost info from your headunit that was displayed in your car.

No one will loose the ability to see any info from their car's CAN Bus system's computer, mileage, speed av consumption shown on/in the dash etc etc as a result of installing a different stereo.
[MTCB Android Head Units Q&A] jekj100:
MCU.IMG won't update

Hi

I successfully updated the update.img, however mcu.img do not update.

Both files were in sdcard and update was startet from bootloader.

Any ideas?:confused:
[MTCB Android Head Units Q&A] 1-2-Hak:
Mine had no input at all. Didnt check after update because it died soon after. Maybe it was part of the amp fault. Hopefully get my replacement boards this week and can check this out.
[MTCB Android Head Units Q&A] pakidermo5000:
Ok, that just confirms my thoughts about not being a genuine HuiFei. If you check on the HuiFei page, the model that you got is not there:

http://kaigele.en.alibaba.com/productgrouplist-221016542/Car_DVD_for_Honda_Series.html

Probably, your seller took HuiFei's software and adapted it to their hardware. Of course they had to use RK3066 for most of the firmware to work. This is general practice in China. They take a good product, copy it, modify it slightly and they sell it. This would explain why your buttons did not work after the update. Probably the hardware that you have is different, for instance your GPS specification is just Sirf III, ours is U-BLXO G6010 ST. Our radio receptor is Philips, yours say nothing. I think if it was philips, it would be there just because philips is a well known brand.

Well, this already shows that your firmware was pre-treated by your seller. There's no HuiFei unit with such a fast boot up times.

Firmware has very few to do with wifi reception. Maybe you have a defective receptor.

Ok, you won´t get bluetooth tethering for internet to work. Read the post about MCU. No idea about the USB.

You seem to be the only one having problems with the firmware, so probably your firmware files do not work for us.

There should be no problem to flash TWRP. There are other options than just the flash_image that 1-2-Hak used. Just search for it in FreakTab. Or maybe try again 1-2-Hak method. But the best you could do is get the update.img from your seller.

Ps: I am glad you could recover the functionality of your unit.
[MTCB Android Head Units Q&A] pakidermo5000:
Do it manually from recovery. I had to do it 2 times for mine to work.
[MTCB Android Head Units Q&A] sambutler86:
Thanks a lot, although its got 4.2 not 4.1 like that thread, but Ill take your word for it.
[MTCB Android Head Units Q&A] typos1:
OTG allows the device to act as a USB host or a USB slave - read the article on Wikipedia for more info. And it IS relevant to 3G if the 3G modem requires OTG support to work.

---------- Post added at 01:29 PM ---------- Previous post was at 01:25 PM ----------

Which version, what is the date of it ? Did you update the MCU as well ?

---------- Post added at 01:37 PM ---------- Previous post was at 01:29 PM ----------

Theres a fix for the TT problem, use thread search to find it.

AUX and AVIN are the same thing.

There is a plug in lead for the AUX/AVIN in function fro the headunit, yours should have come with one, plus some units have a headphone jacl on the front for it as well.

If you want to use your car's AUX/AVIN socket, you need to find out where the cable goes and connect t to the unit.

Um, the WiFi/3G cables are for Wifi and 3G, cant even believe you asked that !!!

AFAIK all USB ports can charge, buit did you really need to ask this ? - you could simply plug your phone in and see for an answer to that question.

---------- Post added at 01:47 PM ---------- Previous post was at 01:37 PM ----------

Some CAN Bus cars have resistive SWC, some have CAN Bus SWC, not sure that would help in your case, it seems like the developers forgot to add support for SWC for your vehicle when they updated the MCU version. Have you gone through ALL CAN Bus types in factory settings and tried them all ? I ve connected my CAN Bus lines directly to the headunit but I cant get any response, probably because my car is not supported, but a few weeks back another XDA user confirmed that the headunits can speak to the CAN Bus system, I dont think this will help with SWC though, I think this for door open warnings, trip computer info, etc

---------- Post added at 01:50 PM ---------- Previous post was at 01:47 PM ----------

The first one is very low spec, running 2.3 with only 512Mb of RAM, probably at least 3 years old and being sold off cheap cos theyre so out of date.

The second isnt even Android.

Theryre also NOTHING to do with the units in this thread.

---------- Post added at 01:56 PM ---------- Previous post was at 01:50 PM ----------

Have you read the thread ? - Its probably had an update, the units in this thread started as 4.2 and are now 4.4.4, you can find out yourself by looking at the "about device" screen in settings (this is the screen that most people would go to to find out what their device is) and seeing if the MCU version is anything like the ones on these units, you could also look at the first page of this thread and check out the pdf that tells you how to identify your unit, if you do that your ll see that the back is not like any of the units in this thread, also the built in apps are not like any of the built in apps on the units in this thread.
[MTCB Android Head Units Q&A] RyanBRZ:
I'm not sure, how do I check? And the front USB port is one of those USB Mini-b types, which is not the same plug as my dongle.. But more importantly, I do not want a wire sticking out of the front of my radio 24/7. If I can't get this to work with one of the USB ports on the back of the radio then I'll have to do without it.

I did upgrade my MTCMusic that has the wider folder\track listsings. But I cannot swipe to left or right, what is there is the only view I have. With the stock 4.4.4 MTCMusic, I could swipe right to see folders, left to see tracks.
[MTCB Android Head Units Q&A] typos1:
Right, so it seems you are running 4.4.4 with the modified 4.2 MTCmusic app I was talking about, this must be the embedded one as opposed to the one that has a wider track listing on swipe, although it looks to me like the one with the wider track listing, not the embedded one - I could be wrong its a while since I used the 4.2 apps, which one did you install ?

EDIT: I think I m wrong - pretty sure the track listing has an outline around it if its the wipe type. If you want to see more info, you could swap artist and track listing around, then you would always be able to see the track.

Does it play .flac files by the way ? On 4.2 it didnt at least on my unit, but from 4.4.2 onwards it did.
[MTCB Android Head Units Q&A] antfros:
Spotify App, i think that it uses non-standart events. Is good for next version that your app can change music on spotify.

Servicecarapp can now change spotify music, but i like more your app, because your app have more features
[MTCB Android Head Units Q&A] typos1:
Anyne else getting a "settings has stopped" error on coudu's latest ROM ? My unit is virtually unusable because as soon as I select "apps" I get this message.
[MTCB Android Head Units Q&A] RyanBRZ:
The one I used is listed in the first post, but there are 2 there so maybe I am using the wrong one?
[MTCB Android Head Units Q&A] typos1:
In my previous post I told you there were 2 version and the quote you posted clearly says that there are 2 versions, which one did you use ?

Theres no right or wrong, its down to personal preference.
[MTCB Android Head Units Q&A] RyanBRZ:
I tried both, the only difference that I can see is one has outlines and one does not. I guess I will try to edit the stock one just to widen the folder and track lists. Do you know which XML file this is in? Thanks for your help.
[MTCB Android Head Units Q&A] typos1:
Maybe you should check again as one allows you to hide the track listing like the original and one its embedded like it says on the post you got them from. Try the one with outlines again and then attempt to swipe right on the track listing then it should hide like the original.

Does the 4.2 one play .flac files on 4.4 ?

I ve never edited the xml, although it is something on my to do list, but there are links to guides posted in the thread.
[MTCB Android Head Units Q&A] RyanBRZ:
The second one I just tried does allow hiding the song list, but it does nothing when I swipe right. .flac is not appearing in the track list.
[MTCB Android Head Units Q&A] horn34:
Does anyone have one of these units in a Toyota? My Parrot Smart unit just developed a bad touchscreen, so I want to try something else. This unit is about $300 shipped and has all the things I need, but of course I don't know anything about the unit or the seller. Any input would be greatly appreciated (the unit is going into a 2006 4Runner).

http://www.aliexpress.com/item/7-IN...-3G-Bluetooth-2-DIN-universal/1948364463.html
[MTCB Android Head Units Q&A] fedmond31:
I dont know this seller , the model shown is not for Toyota but Nissan, but i have just bought a JY for my Toyota IQ from the seller Mekede : aliexpress dot com/store/909923 he has quite a big range for Toyota, shipment was quick and my unit is working very well.
[MTCB Android Head Units Q&A] horn34:
Thanks! Another thing I noticed is that some of the CPU specs say "Cortex dual 1GHz" and some say "Cortex dual 1.6GHz" ....are there different models with different Cortex CPUs? I thought all the units with a Cortex CPU were 1.6GHz...
[MTCB Android Head Units Q&A] typos1:
Looks like an AN21-U, try the thread for it on XDA.

Its for anything - its a universal unit.

In the older MTCmusic app you press the "file" button for selecting where to get music from, on the new one, you swipe right (to bring up the file source menu on the left), both apps you swipe left to bring up the track listing on the right. So its up to you which one you want to use.

Thanks for telling me about .flac - all my music is .flac and the old MTCmusic app didnt support it (even though it was supposed to), just wondered if it DID play them running on KK as I might have gone back to it for the embedded track listing until I get round to modding the new one.

You could pm Dark Alex and ask him to mod the new one in the same way he modded the old one.
[MTCB Android Head Units Q&A] horn34:
Thanks. If that is an AN21, I don't want it. I scanned both of these threads, and I think the units with the RK3066 are faster and a better long term investment in terms of upgrading android versions (feel free to correct me if I'm wrong there).
[MTCB Android Head Units Q&A] RyanBRZ:
Can someone please modify the MTCMusic.apk that is included in KLD_4.4.4_800x480_141223_rooted_light_reparted_init.d_v4.2 to give wide folders when swiped to the right, and wide song list when swiped to the left?
[MTCB Android Head Units Q&A] typos1:
You dont need wide folders - it uses the the built in file manager for selecting folders, you would only need a wider track listing.
[MTCB Android Head Units Q&A] RyanBRZ:
Yes I just noticed that and was literally about to update my post. I can also post the said apk for whoever is willing.
[MTCB Android Head Units Q&A] lankyboy29:
I think its a Klyde

Hello I just purchased a Pumpkin head unit from autopumpkin.com. I believe its a Kylde running android 4.4.4

Is there a root method for this?

If it has been answered here forgive me.

The MCU is:

MTCB-KLD-V2.12

Model:

S02

Build:

rk3066-eng4.4.4 26112014. 18:02:06
[MTCB Android Head Units Q&A] obekende:
Hi Folks! Coudu please modify the the video that is included in KLD_4.4.4_800x480_141223_rooted_light_reparted_ini t.d_v4.2 have filter that darkens the image, in the JB 4.2.2 this problem not exist, someone happened the same?? ...

B regards.
[MTCB Android Head Units Q&A] RyanBRZ:
Look at the very first post of this thread, How to root. You download an APK and it does all the work for you.
[MTCB Android Head Units Q&A] mbarijfh:
[/COLOR]

Yes, you got all details right!

There is no need of mic gain adjustment under KK. I checked it out with Skype (testing service): one could speak normally, without getting closer to the internal mic. Google Search also "hears" me well. Once the two mics are separated, that is.

The mic separation is not a big deal: once the DVD is taken out of way (a mechanical operation), access to the (vertical) BT card is easy; soldering the shielded wire coming from a new external mic socket (taken from a mic or line in cable with sockets) is not that complicated (see image in post #6381); and cutting capacitor C32 - once correctly identified - is not difficult either.

See [MENTION=290760]dnts[/MENTION]'s recipe and associated images, too.[/QUOTE]

Hello,

so, I did the mic seperation today, I have to say due to my clumsy fingers and tools removing C32 and making the connections was not that easy, everything is so small !

Basically is is working , without external mic I don't hear anything on BT, so the separation works, and once the mic is plugged in, it works on BT.

Unfortunately, quality-wise there is no improvement, a lot of noise and in general low levels, both on BT and the internal mic - So apparantly, there is still someting wrong...

Shielding should be only connecked to the SGND-signal of the BT module and the mic socket, but not the HU housing, right ?

It would be nice if the experts can have a lock at the pictures attached, may be you can give me a hint what I made wrong...

Thanks,

Michael
[MTCB Android Head Units Q&A] lankyboy29:
I did and I know the title says 4.2.2/4.4.2/4.4.4 however the first post clearly says

So this is why I was a bit confused...
[MTCB Android Head Units Q&A] RyanBRZ:
Ok, I'm sorry about that.

I would flash a pre-rooted 4.4.4 ROM, coudo's are my personal favorite

http://huifei.fs-fileserver.de/content/firmware/coudu's_roms/

Pick 4.4.2 or 4.4.4

Select your resolution

Select version (pick the latest, KLD_4.4.4_800x480_141223)

Place update.img in the root of a microsd card and place it in the GPS slot

The system should ask you if you want to flash the update, after flashing, remove the card and\or remove the file so you do not get prompted again. If you do not get the prompt, try to reboot.
[MTCB Android Head Units Q&A] elcolombia17:
Mtcvideo apk in 4.4.4 800x480 rooted light v4.2 has a bright filter. I had to change it with Video apk from 4.4.2 can somebody check it? I now can see vídeos properly and the zoom option works fine
[MTCB Android Head Units Q&A] smooc:
What kind of phone do you have? I have the same issue with an iphone 5, but my lumia 625 is ok now. I repaired my iPhone and it was fine for a while, but it isn't anymore.
[MTCB Android Head Units Q&A] mbarijfh:
Hello,

thanks for the fast feedback. The mic-socket is a new one I installed, it is only connected to the HU via the "new" shielded cable. The mic I used is also one for parrot systems, that should be fine.

I didn't understand that there are different models, which require different recipes, I thought just separating the mics is enough- I will read dnts' recipe once more, thanks for the hint. I have a KGL-7509 unit.

BR,

Michael