yashsingh1/xdaforums huggingface dataset:
[MTCD Android Head Units General] slowgrind:
Hi,

Does anyone have a raw recovery bin file for PX6 head unit with android 9.0? Say recovery v9.0.5 or similar. The file extracted with dd. I have recovery file from px6 android 8.1.0, if anybody needs it. So I assume raw writing new recovery image would replace old 8.1.0 with new 9.0.5 recovery.

Thank you

Thank you

---------- Post added at 12:55 PM ---------- Previous post was at 12:55 PM ----------

Hi,

Does anyone have a raw recovery bin file for PX6 head unit with android 9.0? Say recovery v9.0.5 or similar. The file extracted with dd. I have recovery file from px6 android 8.1.0, if anybody needs it. So I assume raw writing new recovery image would replace old 8.1.0 with new 9.0.5 recovery.

Thank you

Thank you
[MTCD Android Head Units General] burjtech:
https://yadi.sk/d/umCvHqCDzHccr
[MTCD Android Head Units General] slowgrind:
These are just normal firmware files. I need somebody to dd recovery bin file from live PX6 9.0 installation. As boot.img in firmware distribution zip does not seem like recovery partition image.
[MTCD Android Head Units General] slowgrind:
So, as this is PX6 forum, can people post recovery.img files from your live PX6 android v9.0 systems here, for example

rk3399:/dev/block/by-name

# dd if=/dev/block/by-name/recovery of=/data/recovery.img

I will write this to android 8.1.0 and report back the results. Anybody not busy during a lockdown? You risk nothing I will take a risk.

Thank you
[MTCD Android Head Units General] scorillo_ro:
$ file KIA_Android/My_Work/A9_Dump/recovery.img
KIA_Android/My_Work/A9_Dump/recovery.img: Android bootimg, kernel (0x10008000), ramdisk (0x11000000), second stage (0x10f00000), page size: 2048, cmdline (console=ttyFIQ0 androidboot.baseband=N/A androidboot.wificountrycode=US androidboot.veritymode=)

https://drive.google.com/file/d/1_gQPJrPK7miXEFEfo4oZftaIN1yUDSnH/view?usp=sharing

L.E.

Are you aware of "recovery-from-boot.p" protection mechanism? Good luck!
[MTCD Android Head Units General] slowgrind:
Yeah recovery-from-boot.p deleted. Head unit does not boot into new recovery just like that, black screen. Even with edited img header. There has to be crc or sha1 somewhere in img or a locked uboot, not sure what exactly. Give ideas please.
[MTCD Android Head Units General] epicBuM:
I just installed the PX6 4/64 with android 10. Everything works great, however, the Xfinity stream app gives the following error. "We're sorry. This video stream is not playable under the current device conditions. Please disconnect any external devices (including HDMI, screen mirror, or casting devices) and try again."

No HDMI is attached to the back hdmi port. Is there any ideas out there?
[MTCD Android Head Units General] Clandaries:
Is it a MTCD/E head unit?

If so and if it is real, can you ask your seller to share the update?

Regards
[MTCD Android Head Units General] slowgrind:
Yes and post the PX6 update firmware here as well. In update.img or update.zip form.
[MTCD Android Head Units General] epicBuM:
Px6 MCU?

I believe it's MCU, correct?
[MTCD Android Head Units General] epicBuM:
Better picture

Included a better picture. Would I possibly need to install an older apk for Xfinity stream. Had to do that for netflix to work. With no HDMI or casting device attached, would screen mirroring cause this issue/error as listed in previous post?
[MTCD Android Head Units General] typos1:
Theres no such thing as a "PX6 MCU" - on MTCD/E units MCUs are entirely separate from the processor.

Your MCU is an STMicroelectronics MCU, the same as MTCD/E units, and your processor is the same as used in some MTCD/E units, however the software for both and the rest of the hardware is totally different so your unit is not an MTCD/E unit, which means youre in the wrong thread and the wrong forum, try the Android head units general forum.
[MTCD Android Head Units General] epicBuM:
Thanks for the clarification.
[MTCD Android Head Units General] JrOmnia:
Hi guys, Hope all of you are safe could I also ask for some verification if I'm in the right grp? I have attached screenshots of my in-car device here.

Mine works ok only thing is I can't assign steering wheel controls they work fine but I can't change them.

Has anyone encountered such an issue?View attachment 4996709View attachment 4996711
[MTCD Android Head Units General] typos1:
Yes, youre in the right forum/thread.

Its normal to not be able to change the SWC if you have CAN Bus, there are threads about this if you search, theyre most probably not about the RK3399/PX6 but about the RK3188/PX3 & RK3368/PX5 types, but what applies to them also applies to your units as its the same platform (MTCD/E). If I recall you need root and MTCD or MTCE tools or a custom ROM like [MENTION=5092263]Hal9k_[/MENTION]'s.
[MTCD Android Head Units General] JrOmnia:
Thanks Typos

Appreciate the heads up, so I will have to do some scouring on this thread for the answers then.

Prior to your reply I didn't not know that it's possible to root and port a custom rom too thank you again
[MTCD Android Head Units General] slowgrind:
Is this fake android 10, real android 9? Have you got the firmware by the chance? I have managed to update px6 android 8.1 to 9.0 by the way. By the same token, it could be upgradeable to android 10.
[MTCD Android Head Units General] epicBuM:
Fake android 10

I used CPUZ and found the API is 28. No luck on Android 10. The seller put this crap on here and I'm trying to figure out how to install the actual android 9 or Malay's rom. Running into a few headaches with the firmware that came installed.
[MTCD Android Head Units General] typos1:
Malaysk does ROMs for non MTCD/E units now ? If not you wont be able to install it as you have a non MTCD/E unit.

Might be an idea if you two move your discussion to the relevant thread., rather than clutter up this one with non MTCD/E info. :)
[MTCD Android Head Units General] Krissdean:
Morning, been following this thread.

I currently have the px6 unit with a bmw overlay skin, am I still able to update to Android 9?

So many bugs with my current unit.

(I drive wheel doesn’t work, steering wheel controls not working, speedo in KMPH not MPH) To name a a few
[MTCD Android Head Units General] typos1:
What MCU ?
[MTCD Android Head Units General] Krissdean:
I have taken a picture of the system screen. [IMG="Mcu"]https://freeimage.host/i/JGw4cb[/IMG]

Can’t get the picture to load.

615043bALS-CIC-HW7-190525[B1280_170325]
[MTCD Android Head Units General] typos1:
Not an MTCD/E unit, so wrong forum, try the Android Head Units general forum.
[MTCD Android Head Units General] nifty101:
Does anyone have advice on a better stock ROM?
[MTCD Android Head Units General] typos1:
What dya mean ? You either have a custom ROM or a stock one, "better" depends on the individual, nothing stopping you from trying a stock ROM from a different manufacturer than your unit, as long as its for an MTCD/E RK3399 unit it ll work.
[MTCD Android Head Units General] nifty101:
I was able to easily root this. See my previous comment.

Also I was wondering if anyone managed to get this working on their devices? Adblock Plus @ https://f-droid.org/en/packages/org.adblockplus.android/

For some reason SuperSU isn't working with it. I granted permissions etc. Maybe Magisk is needed instead somehow?

---------- Post added at 12:47 PM ---------- Previous post was at 12:46 PM ----------

I'm wondering if the CANBUS stuff will still work though. Guessing I need to copy over those APK's and back them up in advance.
[MTCD Android Head Units General] typos1:
CAN Bus is no different, the apps appear based on the CAN Bus settings in factory settings on both factory and custom ROMs.

The best ROM is [MENTION=5092263]Hal9k_[/MENTION]', highly customisable so you can make it look factory or customise it to your own tastes.
[MTCD Android Head Units General] nifty101:
Do you mean this ROM here? https://xdaforums.com/android-auto/...rom-hal9k-mod-2-mtcd-mtce-head-units-t3741583 It says it is for PX3 only, not PX6?
[MTCD Android Head Units General] typos1:
He does ROMs for all versions including PX6/RK3399, just google it.
[MTCD Android Head Units General] myspac:
Yes !! it works, but I use "adbon" because keyboard doesn t work on terminal emulator. Too easy !
[MTCD Android Head Units General] myspac:
At this time, the only problem I found on the unit is to have no Wifi after "sleep": the only solution is to reboot; same problem if you keep USB sdcard: no sdcard after "sleep" until reboot.

=> this is a known problem on previous unit ?

---------- Post added at 09:24 AM ---------- Previous post was at 09:03 AM ----------

It coud be MCU problem (https://xdaforums.com/android-auto/...n-px5-te706pl-lock-screen-wifi-issue-t3803976) , but I don't know howto modify the MCU me !

supermman@Hal9k with two snapping finger, sure !
[MTCD Android Head Units General] evlo2:
Can you run geekbench on your px6 unit?
[MTCD Android Head Units General] myspac:
already done, read post before about...
[MTCD Android Head Units General] slowgrind:
Has anyone got the firmware for this PX6/RK3399 Head Unit? Mine has just 'died', it shows blank screen with backlight only, although radio kind of functions in the background, invisibly. Is there a method to back up the firmware to the PC when the unit is 'new' and then restore it? Is there some soft of android emulator which can show what it is supposed to display on LCD but get that that displayed on a PC through adb?

Thank you
[MTCD Android Head Units General] myspac:
Have you tried to restore with the key combination at reboot / boot ?

(it was possible on PX5, I don't remember howto but you can find on xda)

---------- Post added at 09:46 PM ---------- Previous post was at 09:38 PM ----------

Like this : post 6 , it is not easy, I try a lot of time before to sucess to enter into the recovery menu .. (in menu: select is one push on button, enter is long push on the same button)

https://xdaforums.com/android-auto/...button-combination-to-enter-recovery-t3391682

(but your display works at complete startup/reboot ? it is not a hardware problem ?)
[MTCD Android Head Units General] TXEvo:
I was on the fence about a Seicane PX5 since the PX5 from Joying for my vehicle is a QD unit. It has zero to less than zero support. No fast boot, no sleep settings, was a fiasco to get the pre-amp outputs working with a MCU flash. I am done with Joying I hate to say it but I am willing to try this LJHang Unit with PX6.. maybe it will work perfect. maybe it will take a lot of work. But at least it is the next gen ones Joying, Seicane and others will have.
[MTCD Android Head Units General] myspac:
Hi all,

I would like to map the hardware "DISC" button of the unit for to launch "music". I try to setup mtc-keys with mtc-keys.ini in the right folder , without any success.

Someone know where I can find the last documentation todo this ?

Thank you
[MTCD Android Head Units General] typos1:
Try MTCDTools or the Grasser app.
[MTCD Android Head Units General] TXEvo:
Still not too sure which unit this is.. I just hope it is not a QD.. Most likely a MTCD

This is the one that I found for my Vehicle.

https://fr.aliexpress.com/item/LJHA...876.html?spm=a2g0s.9042311.0.0.70f26c37HnxzSa

Any thoughts?
[MTCD Android Head Units General] myspac:
This is the same than other MTCD unit, PX3 or PX5 with the same software: but here it is PX6.
[MTCD Android Head Units General] myspac:
thank you for your help but MTCDTools seem's to only works with media events (play, stop,back, forward ..) and not with unit button events.

I didn t find Grasser , do you know where I can download it ?

thx
[MTCD Android Head Units General] typos1:
Theres a thread somewhere in the forum, try googling it.
[MTCD Android Head Units General] myspac:
yes, before to ask you, I have already search "Grasser apk download" (for exmple) without any result,
[MTCD Android Head Units General] typos1:
I do not know where it is I would have to google it myself.

You have to try more than one way - try "xda grasser mtcd".
[MTCD Android Head Units General] jtrosky:
Here you go - here is version 13.1 (required Xposed though):

Graser Dasaita 13.1
[MTCD Android Head Units General] myspac:
ahhhh ! thank you for your link: "graser (not grasser) dasaita tool", Ok, I will try it .

I saw there is other tools from grasersj, is there a repository for all of these tools ?
[MTCD Android Head Units General] jtrosky:
I get most of this stuff directly from 4pda.ru (Russian site). However, you need to register for an account there in order to download - and in order to register, you need to figure out a Russian number captcha. I eventually was able to register after quite a few attempts (with the help of a document that shows how Russian numbers work).
[MTCD Android Head Units General] pogueoi:
It's not Grasser but Graser.

I think this is what typos1 meant:

https://xdaforums.com/showpost.php?p=72622247&postcount=3

Edit: Oh, just saw the link was already posted
[MTCD Android Head Units General] myspac:
In fact, in factory setting / (126 menu)", there is the study key panel , and here , we can choose actions with short or long press of unit's buttons. So, remap the disc button to music was easy. Remap long click to "parameter" or something else is usefull.

(The only pb is that if you custumize button, you must do this for all buttons , not only one.) You can save it after. I think it is the best way for my need.
[MTCD Android Head Units General] typos1:
That doesnt normally work for units with CAN Bus where the CAN Bus setting dictate the SWC functions.
[MTCD Android Head Units General] jtrosky:
I believe that he's talking about the physical buttons on the radio faceplate (which do work normally on CANBUS-based units), not the steering-wheel controls.
[MTCD Android Head Units General] myspac:
Yes, it was about the physical buttons of the unit.
[MTCD Android Head Units General] typos1:
Ah, ok, soz.
[MTCD Android Head Units General] myspac:
Hi all,

When I reboot,the preferences of some apps are cleared. I remember of this problem on an old Malaysk PX5 version; someone know how to correct it ?

Thank you
[MTCD Android Head Units General] TXEvo:
wow.. LJHang as a seller is just god aweful. I really want to get my hands on the PX6 because the QD PX-5 was garbage. Now a month later I still have not gotten my product and it is not even close to being in my hands. Look like another month wait is in order. Anyone ever deal with disputes on Aliexpress? I know this is off topic a little.
[MTCD Android Head Units General] TXEvo:
I had the same issue. Spotify would clear my downloaded list in reboot.

I took my 32gb card, formatted it as internal and then set spotify to that card. Then after success of it holding my spotify. I set my apps and media to go to my SD card. I then got a 128gb ad card, formatted as internal and set my 128gb card as the main storage for my apps and media.

It has held all my apps and settings as well as downoads for apps.

I did finally get my head unit yesterday and played with it, set the buttons and got my apps and downloads on it.

I noticed some noise from the RCAs, I have a developer warning for spotify constantly. Pops up if spotify is running in the background. Sucks.

Gonna wait till this head unit is more available and people are working on the android for it.
[MTCD Android Head Units General] TXEvo:
I have got to find out how to enable Developer Options. I need to trace back where this Developer Warning is coming from. I know that Android 8 they enabled the use of Development warnings and notifications but man this one for Spotify is ridiculous. I am also going to extract and copy the ROM on my computer and start playing with it. I need to get some custom things adjusted to my liking.

Is anyone else messing with this ROM or building their own?
[MTCD Android Head Units General] myspac:
Hi, don't understand what you need when you speak about Dev options, but I have no problem to activate adb by "adbon" as password on the factory settings menu instead of "126". I can dev with usb link (choose the good usb, I have 3 usb port on my unit and only one works for that) to my laptop and better with wifi with adb wifi application (without root).

If you root the unit, you can restart adb as root too...
[MTCD Android Head Units General] TXEvo:
I just need to get into developer options (usually click build # 7 times) just to disable the popups while I work on the other unit I bought.. Best bet is to always buy two. Use one for testing and one for Development. I just want to disable the developer warnings since one is in my vehicle so I do not have to mess with trying to get my laptop connected. Not a biggie if it is not accessible.

How are you liking it? Wondering your opinions. Mine had said it was rooted and would not allow it to install a couple of Apps because of this but it wont let me install SuperSU either. Which is weird. if it is truly root. I saw you were gonna try the Android 8.0 root process for PX5. Did it work?
[MTCD Android Head Units General] myspac:
Yes, I rooted mine Android 8.1, it was easy: I use this method to root it: https://xdaforums.com/showpost.php?p=76725981&postcount=740 (but Terminal application didn't work for me, so I use adb command line):

(0. connect my car battery to a charger to have enough power after some minutes/hour of install : root, applications, tests.... !)

1: connect my laptop on the (right) usb unit

2: enable adb with "adbon" password on the unit

3. adb connect (sdk andorid)

4 https://xdaforums.com/showpost.php?p=76725981&postcount=740

(After the fisrt step, after the reboot, for root adb, I use adb connect 192.xxx.xxx.xxx 5555)

At first, you mustn't install SuperU application, you must download it, unzip it, get "su" programm and copy on your adb PC folder, to be able to be copied by command line instructions..

After, you can install it but answer "NO" for update, but answer YES when other applications ask root access.

All step of the method works for you ? no error message ?

---------- Post added at 11:34 PM ---------- Previous post was at 11:26 PM ----------

Oh, I forget: I use USB 3.0 cable to connect unit and my laptop, because I found USB cable male to male (I don't know if it exist with USB2 , I never find).
[MTCD Android Head Units General] TXEvo:
Awesome. That worked perfect. Thank you myspac
[MTCD Android Head Units General] miramar3:
These units all use the same basic motherboard/daughterboard design don't they? I know I've been able to take PX5 daughterboard and install it on the shell of a PX3 unit. Does the PX6 setup look the same? If that's the case I wonder if anyone can find the source of the PX6 daughterboards and just buy that to upgrade current units for a lot cheaper than buying the whole thing.
[MTCD Android Head Units General] typos1:
All MTCD/E units use SoMs that are interchangeable, ie if its an MTCDE unit you can use ANY MTCD/E SoM, RK3188/PX3, RK3368/PX5 or RK3399/PX6, so the answer is yes you can buy an RK3399/PX6 SoM and use it in ANY MTCD/E unit.
[MTCD Android Head Units General] Fattah:
€ 79,79 | Free shipping!! WITSON Android 8.1 2GB RAM 16GB Flash PX30 Coreboard For Android DVD GPS unit

https://s.click.aliexpress.com/e/c5F4Hszb
[MTCD Android Head Units General] typos1:
But only 2Gb RAM.
[MTCD Android Head Units General] jerrymh:
Just open a dispute on aliexpress, use the live chat (that part on the scree that says (do not have recibed my product, and not satisfied with the bot asistance), normally they try to evade you, just be insistent and do not let the timer on the chat kicks you out (do not stop to type). They try to change assitant but is the same person. Las time they almost steal from me 100$, but by the end they refounded my money.
[MTCD Android Head Units General] cennaciri:
I got an error at the adb remount step:

dm_verity is enabled on the system and vendor partitions.

Use "adb disable-verity" to disable verity.

If you do not, remount may succeed, however, you will still not be able to write to these volumes.

remount of system failed: Permission denied

remount failed (/system was write protected).

The fix for me was to add some extra steps after the remount:

adb disable-verity

adb reboot

After the reboot I started all the steps over again. The unit ( PX6 Android 8.1) is now rooted.
[MTCD Android Head Units General] apollo1976:
But these new PX6 units only have 2 GB of memory and 16 GB of space. Do you confirm this?

Thank you
[MTCD Android Head Units General] typos1:
The links at the beginning of the thread are 4/32, its only the link for the SoM on its own that was 2/16, check the specs on the site youre thinking of buying it from.
[MTCD Android Head Units General] apollo1976:
Thanks for the reply. I have seen the 4 links in the first post and for 3 links the units always have 2 GB of Ram and 16 of space. Only one link has a unit with 4 GB of Ram and 32 GB of data, but this unit is declared as unavailable. At this point I think that for now on the market there are only 2/16 gb versions and in the future the others. If someone has already purchased a version with 4 GB, write it here.

Thank you
[MTCD Android Head Units General] lagos911:
The problem which stop them to create units with better screens and resolutions its the reverse camera. With RCA cable the maximum resolution u can get is 480p. And now the most screens have 600p and the video of the reverse camera looks like s**t. I was thinking to buy a good reverse camera HD - fisheye but when I saw the RCA connection there was no reason to buy it. They have to create a new board with other type of connections for video input/output Ethernet - usb - HDMI. But if you are using reverse camera with usb and dashcamera with usb there no more ports left. Right they just change the cpu.
[MTCD Android Head Units General] typos1:
Just search around on ebay and aliexpress for the 4Gb models.
[MTCD Android Head Units General] myspac:
With your unit, have you the same problem like me ?

- wifi and usb are disabled after long off unit (car off and when I comeback after 12-16 hours), impossible to enable them.

=> mandatory to reboot the unit every morning to be able to enable Wifi and to have USB active.
[MTCD Android Head Units General] perdigao:
I've got one this units from 4x4shop (PX6 with 8.1 Oreo). Any advantages in root it? Are there any updates for MCU or Firmware that I can apply on it?

The sound coming from the Unit is not that great and the Microphone on CarPlay (using a dongle) does not work. Cannot get Kodi to work on the unit and only very old version of Netflix (with limited functionality) works. Any ideas?

All the best!
[MTCD Android Head Units General] typos1:
You can use ANY MTCD/E MCU that matches your unit manufacturer (MTCD/E are not processor specific). Rooting will give the usual advantages rooting Android gives.

I m sure in due course a custom ROM will be available.
[MTCD Android Head Units General] cennaciri:
Hi,

No I don't have that issue. But my unit always (re)boots when I start my car.

When I turn off the key, it takes about 1 minute for the unit to cut down it's power down.

---------- Post added at 09:12 PM ---------- Previous post was at 09:11 PM ----------

---------- Post added at 09:14 PM ---------- Previous post was at 09:12 PM ----------

The biggest issue I have is that the android system doesn't read the canbus info. This is a major letdown because the steering wheel controls don't work because of this.
[MTCD Android Head Units General] myspac:
Thank you for your feedback about my issue. (my canbus works fine, always and without any problem/error: infos and controls)
[MTCD Android Head Units General] cennaciri:
I have a BMW E83, what is your model?

I think your solution lies in shutting the system down. When you turn your key off the unit should completely turn off and not go in some kind of sleep mode.
[MTCD Android Head Units General] typos1:
Have you got it on the right setting ? The MCU controls this and thats the same for all MTCD/E units. There are 100+ MCU options in factory settings, have you tried changing the setting ?

For the shut down delay you need to change the setting in settings/extra settings.
[MTCD Android Head Units General] naghtan:
Looking for PX6 for Benz W211... but nothing... :((