yashsingh1/xdaforums huggingface dataset:
[MTCD Hardware Development] rigattoni:
Any chance that someone knows about the pin layout on PX30
[MTCD Hardware Development] marchnz:
If it's mtcd/e it is the same
[MTCD Hardware Development] rigattoni:
Yes, it´s a MTCE, so the board is really dead, Thanks for confirmation.

I already repaired some of these units with my cable set up, but this one does even not react. The buttons just light up for a second after that the unit is completely dead. Power consumption is less than 2mA. I will send the unit back to the forum member, he really needs a new board.
[MTCD Hardware Development] hali8:
For me all combinations of resistors and pins doesn't work. So i mount my PX5 SOM back to the device, connect to the car installation and to the laptop by usb - usb and force maskrom by the 2 pins on the SOM when device was booting. Device was recognized by the laptop and by the rockchip factory tool and i was able to upgrade firmware.

Now i have another problem :) All work great except rear and front camera. They dont work (yellow triangle on black screen). Is it possible that I have damaged the pins on teh SOM responsible for the AUX IN?

EDIT: Update to Android 10 fix problem with the camera.
[MTCD Hardware Development] BadFish1:
Hi,

I have that board, regarding to the board its PX6, but i couldn't find anything like that, all the som boards look different to mine.

A friend gave it to me, because he tried a wrong ROM.

Now all we get is a black screen.

I tried usb, as you can see, but I think i am doing something wrong...

i was not able to figure out how to get to recovery mode.

How do i get this thing back to life?
[MTCD Hardware Development] Sdpuk2020:
You’ll probably need to find a way to get it go into maskrom

Each one is different
[MTCD Hardware Development] renatolipari:
Did you check under that square metal cover? Maybe the SOM is under the metal cover.
[MTCD Hardware Development] STRAIGHToutLAZY:
Here is mine PX6 --HCT-RK3399-REV08 MTCE 3.71B . I tried to do a 10 Android upgrade from 9 Android and got stuck in a boot-loop :( Try using the USB on labtop I get a bad TEST FAIL. Now waiting on a 12k and 15k resistor from Amazon. Any input would be welcome. Thanks
[MTCD Hardware Development] marchnz:
What do you mean test fail? Screen shot?
[MTCD Hardware Development] STRAIGHToutLAZY:
When I used the RXDevTool and load img file on the very first line to the right you will see it states that the Test Device Start when load the img file to will state the Test Device Fail right after in RED. I just remove the cpu board so I dont have a screen shot.

Just waiting for the 12k & 15k resistor last change to recover hoping this works.
[MTCD Hardware Development] marchnz:
Try erase flash first.
[MTCD Hardware Development] STRAIGHToutLAZY:
Thanks, I try wipe the cache then i erase all and still it will not do the android 10 i even tried android 9 to see if it take still no this sucks :( I got a bad feeling about this I think its died but got one more thing to do thats the 12k & 15k if that does not work then I'm lost at that point.
[MTCD Hardware Development] marchnz:
Hi, for clarity - WIPE within Rockchip Tools utility. You will need to first load the image file for the version you are wanting to install.

If it helps, I havent had any failed SOMs.
[MTCD Hardware Development] STRAIGHToutLAZY:
OK I'll try to be a bit clear on it .

Now the 12k & 15k resistors is dose not work at all here some pictures.

When I plug the USB it does nothings at all. Any help please
[MTCD Hardware Development] fratellos:
I think your count is wrong; you have a 76-pin board, not 72-pin ... You need to move all the connection pins.
[MTCD Hardware Development] goodles:
thanks for sharing

印刷公司
[MTCD Hardware Development] Klomp2k:
Hey guys,

Been trying for a couple of hours now but i cant seem to crack it.

I have a HCT-PX5-Rev16(LPDDR) coreboard that came out of a Witson PX5 RVT Android 10 series radio. I tried to install the android 10 version of Hal9K on it and now the unit/radio wont boot up. I get the Hal9k logo, then an animated android logo and then it just stays there (animation keeps going so its not crashing).

I've been trying to use the otg cable method. Cut a USB cable, soldered the resistors and got the cable to work. Windows is seeing the board no problem.

Trouble starts when i try to use Androidtool (V2.1) to flash the board. Androidtool gives me the "found one LOADER device" message at the bottom so it does see the board, however everything i try results in an error message. After selecting a new firmware the "EraseFlash" function under the upgrade firmware tab gives me "Test Device Fail" for example. Everything under Advanced functions gives me error messages. I'm hitting a wall and i cant seem to find a way around it. Any suggestions?

Edit1: This also happens in Maskrom.

Edit2: I found a .IMG file called PX5_A10_IGV.img on @marchnz's google drive. I'm able to flash that to the board and after that the board actually gives me information using RKdevtool 2.84. When i plug the board back in to the radio the screen flashes white a couple of times and then goes black. I've flashed the coreboard with the android 9 image on the opening post of this thread but then the coreboard goes back to being bricked and giving me errors in RKdevtool 2.84.
[MTCD Hardware Development] marchnz:
Can you try another version of Android Tool? They can be hit and miss. I can't recall the latest version, but it will be available for download from the source I mention in my post.
[MTCD Hardware Development] Klomp2k:
I fixed it. Its running Hal9K V5 perfectly now.

Anyhow, i tried several versions of Android Tool actually. I probably just did something wrong or whatever cause i couldnt get any further with any of the versions i used as it kept throwing errors.

I did manage to install one of the versions i pulled from your cloud drive and "debricked" the core board, while still not being able to boot to android but at least the screen lit up. From there i got stuck for a while.

I then spotted an empty slot on the board (not the core board but the bigger board that houses the cable's and the modules etc) that looked suspiciously like the slot for the flatcable with the SD reader attached (my headunit came with a seperate screen with a GPS sd card attachment). The sd card wouldnt be read from the screen/SD card reader at boot and in the system it wasnt called GPS but rather something generic like SD or External or something, cant remember. So i detached the SD reader from the the screen and plugged it in to the main boards slot and all of the sudden the reader showed up as GPS in the system.

From there i managed to make a bootable SD card wich was now readable at boot and installed android 6. After that it was just step by step, upgrading to a version that would accept the Hal9K's modinstaller pro, installing android through it, and now its running Hal9k V5.
[MTCD Hardware Development] Flosch_93:
Hi,

I know that this question has nothing to do with restoring a SOM. Would it be possible to connect a USB device directly to the SOM?

The USB ports on my device no longer work and I think the mainboard is defective.

Greetings

Flosch
[MTCD Hardware Development] Flosch_93:
Okay, that sounds great. What would the pin assignment look like?
[MTCD Hardware Development] marchnz:
Check schematic
[MTCD Hardware Development] Flosch_93:
I have that. However, I am not a specialist. I understand where "5v" and "gnd" have to be connected, but not where d + and d- belong. In the schematic a PIN is described with "USB-DET", but that doesn't help me ...
[MTCD Hardware Development] marchnz:
How / what led up to the usb ports failing?
[MTCD Hardware Development] Flosch_93:
I tried to swap the GL850 USB hub for a GL852. Unfortunately, this attempt was unsuccessful. I heated the pins for too long while soldering and damaged the mainboard. Now I'm looking for another way to re-establish a USB connection.

Edit: I just tried to connect a usb device. The device receives power but the system does not recognize it. Did I forgot something?
[MTCD Hardware Development] marchnz:
Sorry to hear. If the GL IC / USB Hub IC is removed or the D+/D- lines disconnected to it, you could connect your USB lines closest to the SOM header pins.
[MTCD Hardware Development] Flosch_93:
Yes, I soldered the USB cable as shown in my picture above. Only the system does not recognize any device. Can you tell me why
[MTCD Hardware Development] csabex:
Hi guys,

I have a RK3399 Rev.10 PX6 MCU and i take it out from the unit to make a dump of the images for my friend.

Everything went well, but when i reinstalled in the car the whole unit, only booted up one time and after that black screen only. I tried to enter into recovery mode, but nothing, none of the key combination works... If i press for 15 sec. the power the 3 fast flashes are present, but after that nothing happens... I tought that the boot partition is dead, so i rewrited the boot.img from RKDev tools, but still nothing, just black screen... Is there a security bit somewhere or what am i missing? The partition images that i saved they are 100% ok, so if i rewrite all of them with the Devtool it should be work no? There is some other step to bring him back to life or what am i missing here? Note that if i connect it to the PC it works great, it is recognized and has no problems at all, every partition it was readable, no error at all... I attach a screenshot of the process. If you have any idea please let me know. Thank you :)
[MTCD Hardware Development] aurelmo:
for px6 rockcip 3399 e60 how do i fix it? blocked on android logo please if you can help me ... thanks
[MTCD Hardware Development] marchnz:
Did you come here to build an otg cable and try, or plead for help. There are other threads to hijack if you can't self help.
[MTCD Hardware Development] aurelmo:
for px6 rockcip 3399 e60 how do i fix it? blocked on android logo please if you can help me ... thanks

I need help, I tried all the hard reset options, I connected and the keyboard doesn't connect anything to it, not even the computer, what can I do? I'm going to attach a picture with the motherboard, can anyone know something, here are some free points, can I do a hard reset if I short them? Of course on my own responsibility..thanks
[MTCD Hardware Development] marchnz:
Not an MTCD unit, wrong forum, you'll need to figure out what you own and find the appropriate forum. Probably "Android head units"
[MTCD Hardware Development] k3dar7:
Hi,

Sorry if this has answered before, but i not find it...

- i purchase PX6 coreboard for upgrading my Dasaita PX5 unit

- before place in HU a want make dump of existing ROM on PX6

- on PX6 coreboard is already USB port

1. Can be onboard USB use for dump, or is need using pins from header?

2. Is possible make dump with some GNU/Linux tool?

Thanks :)

edit: i have this px6 coreboard (paragraph A:)
[MTCD Hardware Development] marchnz:
It's all in the first post.
[MTCD Hardware Development] k3dar7:
maybe "lost in translation" ;-) but:

1. about using USB onboard of coreboard i see nothing on #1

2. About dump/backup i see on #1 only this:

"This tool for dumping / getting full backup of SOM"

but, this is link to "rkDumper" => WINDOWS tool
[MTCD Hardware Development] marchnz:
1. Try it

2. Use rock chip tool Linux version to dump rom
[MTCD Hardware Development] scorillo_ro:
USB port ? Are you sure? Isn't it a mini HDMI port by any chance? :LOL:
[MTCD Hardware Development] k3dar7:
you right, is MiniHDMI ;-)

EDIT: add img...
[MTCD Hardware Development] Xoberr:
Hi, I think I'm in the right thread .... The other day I created a sd to update from android 6 to android 8, I created an SD to update the system, I put it in the GPS slot and it was updated but it did not take me to recovery.

the radio is dead.

If I press the reset button the lights flash, if I leave it pressed nothing, if I press the button to turn on the radio the lights flash and nothing else, I cannot enter the recovery.

I have also tried to create an SD to restore android 6 but the SD reader does not respond The radio is an erisin mtcd kgl PX5, is it okay to do the thread procedure to try to resurrect the radio?

I speak Spanish. I'm using the google translator. Excuse me if you don't understand me well. Thanks
[MTCD Hardware Development] Xoberr:
No one has answered me but I have continued ... I have created the cable and I only get an old laptop with windows XP operating system to detect it without problems, I enable maskrom mode, I try to put an update.img and it always gives me this error "test device fail" and I don't know what else to try
[MTCD Hardware Development] scorillo_ro:
Try to erase flash and try again
[MTCD Hardware Development] Xoberr:
It won't let me either, it never goes past the "test device fail"
[MTCD Hardware Development] Xoberr:
I have taken data of the voltages:

Positive + = at 4.92 volts.

Data +/- = at 4.95 volts.

The additional wires the orange of the resistors give 3.10 volts.

The cable will measure about 25 centimeters (I have read that some of you have shortened it. I have shortened it a lot but I don't know if to cut it more ... to try).

I have managed to get it to work for me on windows XP (32bits), 7 (64bits) and 10 (64bits) unicament in maskrom,But I am still stuck in the step of "TEST DEVICES FAIl" (tried to insert UPDATE.IMG or deleting the flash.

KGL PX5 REV 4.0.

@marchnz if you say that 100% have been recovered with maskrom, this cannot be less than the% is lowered, hahaha.

Thank you.
[MTCD Hardware Development] marchnz:
It might also mean you haven't yet followed the software side of the instructions, such as different versions or erased storage.

There's a chance that your storage device is bad, but I haven't had a single one.

No apologies for not walking though every step and reposting the same information, it's all here there. You might need to decide your investment of time vs. Replacing the SOM.

Of course, you can always send the SOM to me in NZ with return freight.
[MTCD Hardware Development] Xoberr:
I've read the 47 pages haha, I've been like this for a few days, a few days it was the cable, another the drivers, now the test, I'll go crazy.

I already think that the plate is wrong ... for example: I am connected through maskrom and in android tools.

I go to the "advanced function" tab. If I give the options "readflashID" "readFlashinfo" "readIDB" and the rest they all give me FAIL, including reset device.

They should give me some information other than a right error?
[MTCD Hardware Development] marchnz:
Correct. You may find other suggestions from searching for rockchip recovery, but I suggest we've covered all scenarios here.
[MTCD Hardware Development] Xoberr:
They will leave me a px3 board, if I connect it to the otg, and for example I make a backup of the rom, I will understand that the problem is with the board and not with the cable.

If it gives problems, it will be the cable that fails somewhere.

In the event that it is the motherboard, which is the chip that would have been damaged?

If I knew what it is and find it online, they could replace it for me.

View attachment 5490379
[MTCD Hardware Development] bebokoo:
is this my problem, i can't get any further, it seems like a few maps are not being flashed.
[MTCD Hardware Development] Mr.Jimbo:
Hi guys, firstly thanks for all the efforts that have gone into this, I'm asking for some advice for what I think is a dead PX6 board.

Symptom is that on applying power (12v) to the head unit, the buttons light up but the screen is blank (have checked with a torch there is nothing on the screen, nor on the HDMI out), so have tried recovery etc, nothing works.

I've tried to use OTG today on the board, using pins from the USB, and a 3.3v supply voltage to the two pins mentioned, as I don't have any resistors (but I do have a buck converter and a 12v supply) - nothing happens when I connect it or even try to connect with the maskrom pins shorted, the computer just doesn't see any devices. I connected the PSU earth to the earth pin on the SOM from the USB to ensure a common earth, measured +3.3v from GND to pins 12 and 16.

Is supplying the 3.3v from the cable using resistors critical? (I read earlier they are just to turn the SOM on, and it's simple voltage so I suspect not) or does this all suggest my SOM is dead?

I have a 76 pin SOM so am using the +4 pins (so starting with power on pin 5, rather than pin 1) as recommended in the PX6 maskrom thread and the 3.3 pins on the lower rail, but still nothing. I've shielded the USB pins with foil, checked the OTG cable continuity is good...

Anything else I should try before I think about buying a new SOM for it?

Thanks in advance.
[MTCD Hardware Development] Samezrp:
Have anyone of you successfully reached recovery in PX5 rk3368 with MCU SF0 C54 with this mainboard (CO21 PX5 V5.0):

h**p://www.ziqidesigns.com/en/detail.asp?id=191

Suddenly I stuck on boot logo, I can see stating unit and car logo, than android logo and nothing more. I tried to reset and tap screen with 5 fingers as seller adviced, also I received newest firmware, I put it on SD and USB drive, reset unit as advised but it does not go into recovery mode so I have logo and nothing else, booting after some time again and again. Any ideas?
[MTCD Hardware Development] typos1:
MCU SF0 C54 ?? Does your MCU start with MTCD or MTC\e ?
[MTCD Hardware Development] Samezrp:
MCU states as I described: SF0:

View attachment 5632329

picture taken when I was able to operate on the unit.
[MTCD Hardware Development] typos1:
Its not an MTCD/E unit so wrong forum and thread try the Android head units general forum.
[MTCD Hardware Development] Alex_m21:
Dear user,

I'm facing a problem related to Head unit PX5 that is stucked on car logo.

To try to repair and reload a new update, i've connected SOM to USB but it is not detected correctly by my PC. It is finded by unknown device ( Device Descriptor Request Failed) . I've tried it on Win XP, Win 7 and Win 8 and it happens on all versions.

I tried to connect by OTG USB cable and also by male to male cable. Always same behavier.

Been reading some reported issues and tried everything: all resistors combinations to get 3.3V and even used and arduino to get 3.3V and 5V from it. ROCKCHIP drivers were correctly installed.

I have 4.9V on power supply, 3.2V on recovery pin and usb detect, 3V on data (white and green).

Any thought from your side in order to help? Anyone can sent me pinout?
[MTCD Hardware Development] marchnz:
Force maskrom while connecting device to PC
[MTCD Hardware Development] Alex_m21:
Hi marchnz,

Thanks for your reply.

Already done that (shunt on pads for some seconds) and get same behavior.
[MTCD Hardware Development] marchnz:
Try another PC and/or short USB cable
[MTCD Hardware Development] Alex_m21:
I've tried another male USB cable and it worked. Other cable had data green line problem.

Thank you very much.

Do you know i is there any thread regarding to tuner FM problems?
[MTCD Hardware Development] hangsun2:
I am a bit confused, I have px6 with sdcard slot, and I got black screen and not detect by PC, is this the only way recover it in my situation? Also, I don’t have soldering skill :( can I buy this cable somehow?
[MTCD Hardware Development] marchnz:
Or send SOM to me (new zealand) no charge just return freight
[MTCD Hardware Development] hangsun2:
I disassembled to this, I cannot remove the metal piece. That’s the SOM? some members said shorting 2 pins, does it work in my case?
[MTCD Hardware Development] Xoberr:
It is glued to the heatsink with the thermal paste, because there are no screws, I think
[MTCD Hardware Development] rigattoni:
They mostly use a double side sticking thermal pad. You should be able to remove it.

BTW... Almost a good idea to use a good thermal paste afterwards instead of this sticker.
[MTCD Hardware Development] marchnz:
More great posts with solid advice.
[MTCD Hardware Development] Xoberr:
Does anyone have a dump of a px3? I always get this error when trying to load an .img Error:Layer<3-1-2> :Download Boot Fail

Thank you
[MTCD Hardware Development] woma1:
I have a PX5 MTCE LM HTC-PX5-REV10 (LPDDR)

I already wrote about my problem. For several weeks I have been trying to resuscitate the PX5 unsuccessfully. I have read all the messages on the forum in the topic, I think. Unfortunately. It still does not work.

Purchased from A8. I upgraded to A9 (all ok) and then to A10. The update has failed. The device after the display of 1 logo "10 multimedia navigation systems in vehicles" and the screen immediately goes blank. Failed to enter into "recovery".

Using information on the forum, I constructed an OTG cable (I tried resistance 12/15 k and 12/22 k). Voltages: red 5.0 V, yellow 3.2 V, white and green 1 mV. After connecting to the device the voltage: red 4.3 V, yellow 1.7 V. Of course, I started with pin 5 on the connector. I checked all connections and cables many times. They're ok. Computer not detecting USB device.

So I tried MASCROM. USB "male-male" cable (functional, I checked it on other devices) connected to each USB port in turn. I tried to connect the USB cables both at the time of the connection and right after. When turning on the voltage, I shorted the pins as described here:

https://xdaforums.com/t/px3-5-otg-n...imple-usb-cable.3766892/page-30#post-82428727

and here:

https://xdaforums.com/t/px5-stuck-in-bootloop.3635412/post-75931327

The only effect is that the logo (I wrote about earlier) appears longer (about 10 seconds). So something is happening.

The computer (Win 10 64 bit) does not see the new USB device. I have tried on many USB ports.

I attach photos.

Sorry for the poor English, but I use google translator.

DuDuSView attachment 5711319View attachment 5711321View attachment 5711323View attachment 5711325View attachment 5711327
[MTCD Hardware Development] marchnz:
Good write up @woma1 , makes it easier to help.

Try short leads and another computer. Be sure to install the driver first.
[MTCD Hardware Development] woma1:
Thank you for your interest in my problem.

What do you say under the term "short leads". Short circuit of the appropriate points on the board? Which? It seems to be the two round ones at the corner of the processor.

I have drivers installed. But the computer cannot see any device! Even if he found an unknown device, it would be fine. But it does not find and does not sound a beep.

Can the USB be connected between the computer and the device when the power is turned on? Do the current with the pins shorted first and then connect the USB (it's a bit breakneck).

Which USB port to connect to (I've tried all of them). 3 are on the board and 1 on the front.

I understand that since the logo is displayed, the device has not completely died and can be saved?

DuDuS
[MTCD Hardware Development] rigattoni:
You should try a proper USB cable. Not something which is normally only used for getting power to some device. Not longer than 1m.

You need to shorten the 2 points while you connect the USB to the PC.

There is too much cable on your experimental board. I never use them for such time critical things.... Solder the resistor directly to the cable and do this as short as possible.
[MTCD Hardware Development] woma1:
HI

These are two different methods that I have tried.

I am using design board and many cables for the OTG method. However, this method was unsuccessful.

So I tried the MASCROM method of shorting points on the board. The device is connected to the computer with a "male-male" USB cable, power is off. At the time of connecting the voltage, the appropriate points on the board were shorted with tweezers. The logo was displayed for a long time, but no devices were detected by the computer.

Am I to understand that the short circuit is to occur at the moment of connecting the USB "male-male" cable? That is:

1. Connect the voltage

2. Shorten the points with the tweezers

3. Connect USB "male-male" cable

DuDuS
[MTCD Hardware Development] marchnz:
1. Shorten the points with the tweezers and keep shorted

2. Connect the voltage

3. Connect USB "male-male" cable

4. Remove tweezer/short

-. App should indicate 'maskrom device found'