yashsingh1/xdaforums huggingface dataset:
[MTCD Hardware Development] typos1:
Yeah I know but the seller is claiming it is, hence me looking again at it. :)

Theyre very similar though, not just the SoM but also the UI, a friend of mine recently got one of these and I thought it was MTCD/E until I saw it. Its an XRC unit and XRC also make MTCD/E units, so my guess is that Isudar sell both MTCD/E units and this other similar type and they are getting confused as to which unit they sold him.
[MTCD Hardware Development] guybaor:
See attached video the seller sent me in order to replace

My main board.

http://fs.163.com/fs/display/?file=...fJZj3PFbSzDbvPhEggJqqsjS8uHGSnRNjGl5teNx8xz3A
[MTCD Hardware Development] typos1:
That video is for an MTCD/E unit - send them a picture of your mobo and tell them yours is not MTCD/E or you are just in for a long wait for your parts and then disappointment.
[MTCD Hardware Development] guybaor:
Update: they offer me to buy just the mother board (Which surprisingly include core board (SOM, right?)) For 80$. I'm trying to insist they should send me these parts as part of the warranty. We'll see how it goes!
[MTCD Hardware Development] Clandaries:
They will just send the MoBo. The PX6 Board costs 160 Euro (190 Dollar) in Germany, so you will not get any SOM.

I also got a new MoBo from Dasaita because there where strange noises from the WiFi module.

And i also just got the MoBo without SOM.
[MTCD Hardware Development] guybaor:
Now they say the coreboard if my unit cannot be separated from the mother board, and it's one piece!

Such a Nonsense!
[MTCD Hardware Development] marchnz:
So thanks for the offer and the suggestions, right :) I could be wrong but it feels like you're not taking the advice, could be a language barrier, but responding to suggestions with two way dialogue is how it should normally work for my thinking.

I also sense, could be wrong, that you get your resolve and that's the last we will hear.
[MTCD Hardware Development] guybaor:
No language barrier here! I understand perfectly!

I took several of your advices into action!

1. Trying to get replacement under warranty - check.

2. Reverse engineering- tried, not working.

3. Ask for diagram- i did, he did not respond to that!

4. If there will be no break through with negotiation with seller, i will sent you the entire unit!

5. Not an option, here they will charge me more for fixing than a new unit!

they asked me for some pictures of the mother board and coreboard in order to verify it's version!

now, they ask me to send the motherboard and coreboard back to them so they can fix it.

Guy
[MTCD Hardware Development] typos1:
Yeah but its still useless if they send you MTCD/E ones when you dont have that unit type.
[MTCD Hardware Development] ferenc1:
Hy somebody can help me?
[MTCD Hardware Development] marchnz:
Is your unit an MTCx unit?

What happened to CAN bus, why do you think that damaged your unit. If canbus did something to your unit, what hardware level checks have been made?
[MTCD Hardware Development] Clandaries:
If it is so you have a stm32 and the SOM is soldered to the Mainboard.

Those are head units for about 150 Dollar.

You must watch for MCU is MTCxxx not stm32 or whatever.

Can you show a picture from inside your head unit?
[MTCD Hardware Development] typos1:
The confusion might come from the fact that other head units also use the STM32 MCU module, but they will not have MCU id starting "MTC . . "
[MTCD Hardware Development] ferenc1:
Yes, is it an MTCE_TONE Mcu. I think the can bus system somewhere leaked. I already dont checked the hardware, i dont know whats the good resistor values, etc...
[MTCD Hardware Development] dutachemed:
i need help

I receive this message "prepare IDB fail" and i understand that i must unbrick, fix NAND on the marsboard,

but i don t know where it is on the HCT PX5 rev 4 coreboard.

I also don t know where pins 8 and 9 are.
[MTCD Hardware Development] Iscariot76:
Another successful recovery of PX5!
[MTCD Hardware Development] xinpin:
hello where can I find the resistors? What characteristics must they have?
[MTCD Hardware Development] vespa75:
USB not detected after flash!

Hi everyone,

I managed my OTG USB cable with resistors and recover / flash my SOM.

Now my Android 6 is back (Great), but no USB - BT - WIFI !

Have you had this case? I need your help please.

Many thanks to "marchnz" for your great work

Edit:

Hi,

FYI; I bought the resistors on eBay, search this item number: 174064664631

(12 ohm and 22 ohm)

Good luck
[MTCD Hardware Development] marchnz:
OP

Warning : Use thin pins for OTG cable in order to avoid the damage of the SOM connectors, although along the thread it has been noted many times that damage to the SOM socket is very likely to happen if thick pins are used...OR buy SOM header from Aliexpress, digikey etc
[MTCD Hardware Development] xinpin:
@ marchnz

I believe that som is dead, the pc does not recognize it, I followed your procedure but it doesn't work where am I wrong?
[MTCD Hardware Development] marchnz:
Measured voltages at each pin, what are they?

Maskrom forced while powering on?

Which steps have been followed?
[MTCD Hardware Development] xinpin:
5v each pin.. maskrom doesnt works use win 10 64bit, can i send it to you?
[MTCD Hardware Development] marchnz:
Yes, pm me if you want to send it to me in NZ. You're so close, but 5v each pin isn't right.
[MTCD Hardware Development] xinpin:
What would be the correct voltages?
[MTCD Hardware Development] marchnz:
5v on supply and approx 3v on resistor pull ups.
[MTCD Hardware Development] xinpin:
are the links in the photo correct?
[MTCD Hardware Development] MarcoOSX1976:
Sorry guys

can i use this otg cable to create a new usb port and bypass internal usb hub?
[MTCD Hardware Development] marchnz:
Yep, but you'll lose WIFI.
[MTCD Hardware Development] MarcoOSX1976:
Thanks for replay, my problem is: on the usb port i can use only pen drive, dab+ or carplay dongle dosen't work, wifi,sd card and bluetooth is working. I want to use this otg cable to connect carplay dongle or usb dab+
[MTCD Hardware Development] MarcoOSX1976:
if i want to use it as normal usb port, i don't have to use recovery pin, is that correct?
[MTCD Hardware Development] xinpin:
is it normal that when I make contact between the pins, sparks come out?
[MTCD Hardware Development] marchnz:
No. I dont see a reply to my PM listing my address....
[MTCD Hardware Development] Chima:
Hi! Is there anyone who managed to assemble the OTG cable and use it to connect the core board (HCT-PX5-REV10, 76-pin connector) to the PC? I think I did everything as described here, also tried to supply power separately and tried shifting 4 pins from the start of the comb, and I still don't see any USB devices appearing in the device list. My board itself is in working condition, just trying to understand why the cable does not work...
[MTCD Hardware Development] marchnz:
What are voltages at jig pins when connected.

Did you try force maskrom?
[MTCD Hardware Development] xinpin:
marchnz parcel shipped
[MTCD Hardware Development] Chima:
@marchnz Thanks for mentioning the voltages, that was it!

Just to double-check, maskrom mode is used when the bootloader is damaged or you want to flash full firmware, right?

So my problem was with low voltage for 3.3V lines. Initially, I had 2.75V without load and it would drop to 2.60V after connecting to the board. This is not enough! I changed R1/R2 to 2.2k/4.7k, and got 3.4V without load and 2.8V with the board connected. Apparently, this is an acceptable level, the manual mentioned 3.069V as the minimum though.
[MTCD Hardware Development] marchnz:
Great to hear. MASKROM is needed when the device is unresponsive - i.e. doesnt appear in the windows device manager when connecting to the jig.
[MTCD Hardware Development] hugovw1976:
Need Help on PX3 1GB core I sucesfull upload 7.1 firmware to my board using this metod but after boot I loose USB ports, I still have WIFI so pin connection it's fine but USB ports say unmounted. Any advice how to solve this?

Also try with different rooms (5.1, 7.1) but it's the same for all.
[MTCD Hardware Development] marchnz:
Open schematic.

Trace the two pins to USB hub IC from the SOM.

Find SOM header pins are the issue.

Figure out how to resolve that, foil, hardwiring etc.

Test.

Open beer and enjoy.
[MTCD Hardware Development] marchnz:
I was wrong. There are two USB ports; one to wifi/RTL/md725 the other to USB hub IC.

I'd say fix the problem by tracing against Schematic diagram.
[MTCD Hardware Development] hugovw1976:
Ok, I check thanks.
[MTCD Hardware Development] hugovw1976:
Thanks for the tip I have bad contact on one of the usb pins, just aply a litle of solder on the pin and all work now.
[MTCD Hardware Development] marchnz:
Awesome, good result. Thanks for posting your experience and findings!
[MTCD Hardware Development] Akuma666:
Hi MarchNZ, After the last stint, the SoM board was not being detected by Windows-7. Had to remove the heat sink and short the points on the PCB for the board to get detected.

Once the SoM got detected, followed your and blue1111's instructions to load image partition-by-partition and succeeded. Image attached for clarity. Thanks to you and blue1111.

View attachment 5156095

However, even after multiple tries, I was unable to "EraseFlash" before loading partition-by-partition. Always kept receiving the error "EraseFlash Failed". I even tried with multiple versions of the tool but did not succeed.

I then inserted the SoM back on the core board and plugged the system back, to get to recovery, but I still see a blank screen and the same behaviour as before I started the whole exercise - I am unable to get to Recovery.

Request you to let me know what else I can try.

Thank You
[MTCD Hardware Development] mechaxx:
Deleted
[MTCD Hardware Development] xinpin:
@marchnz do you received my damage px5?
[MTCD Hardware Development] marchnz:
Not yet - pm'ed.
[MTCD Hardware Development] zdzichu2329:
Hi, I have a problem with my PX5 4 / 64GB + DSP radio. Some time ago it stopped playing and the screen went black. I was unable to enter recovery mode.

I found this thread and thanks to the OTG method I was able to upload Android 8 Oreo and the radio turned on on the table. The problem was sometimes not working USB and WIFI, BT sockets (it did not work at all). I changed the OTG method to Android 10, then to 9 but it was still the same.

I noticed that in any case he does not show me the number of MCU drivers, I do not know what they were originally. I bought the radio in Aotsr (they do not answer my requests / questions).

When I was uploading various MCUs by updating the MCU, the radio was resetting but it was working, after uploading some drivers, the radio did not start anymore.

I took out the SOM and cleaned it, then I uploaded android 8 Oreo via OTG and everything is OK under the laptop. After inserting SOM to radio does not work, black screen. I can't hear any sound SOM is starting up and I don't know what to do now.

Are you able to help me? @marchnz , will you help?
[MTCD Hardware Development] marchnz:
Are you able to take some detailed pics of the unit and attach them here.

Note that losing USB/wifi is always due to header pin contact issues, I suspect all of the issues experienced are due to header pin damage.
[MTCD Hardware Development] zdzichu2329:
Hi @marchnz I am uploading some pictures of my PX5. I used very thin pins for the OTG cable so I probably shouldn't damage the connectors. Would you be able to mark me in the pictures what should I look at? When I watch the device in general, I do not see any possible damage. Is it possible for me to mess up something entirely by uploading the wrong MCU? as I wrote before, I don't know what was originally :(

Thanks

View attachment 5174343

View attachment 5174345

View attachment 5174347

View attachment 5174351

View attachment 5174349View attachment 5174353View attachment 5174339
[MTCD Hardware Development] marchnz:
Try slight flexing/putting pressure on SOM while testing USB and WIFI. Also, try continuity tracing the USB and WIFI USB D+ and D- - from your description it sounds like connectivity is intermittent.

Do you have the schematic as a guide? If not see my signature.
[MTCD Hardware Development] ssota:
Hi,

For me, it's still like the HCT-PX5-REV13 module (LPDDR-221), I try to back up all the partitions. Using rkDumper software (version 1.09a_test.
[MTCD Hardware Development] kozik333:
I have a radio like in the picture with the C021 PX5 V5.1 module.

The radio does not start after uploading the wrong software. The screen is dark.

I looked through the forum but couldn't find a way to connect this module to USB to recover (upload) new software.

Can someone help me. Thank you very much

View attachment 5176761View attachment 5176763View attachment 5176773View attachment 5176783
[MTCD Hardware Development] marchnz:
The thread discusses MTCD/E SOMs, so your module pin outs almost certainly differ - I wouldn't suggest trying to connect your module assuming these MTCx pin outs are the same, as is likely to permanently damage your SOM.

As unit is not an MTCD/E, and I don't have this unit or a schematic, the only suggestions I can think of are;

- try to get recovery. Find out what your unit is (possibly an "STM32" MCU type unit - search forums for more info)

- try the USB cable(s)

- obtain a schematic or reverse engineer to identify supply, OTG and recovery lines.
[MTCD Hardware Development] Sdpuk2020:
Hi all.

I am in uk with jig to flash bricked px 3, 5, 30 SoM with custom firmware

pm me if you want me to do it!
[MTCD Hardware Development] Sdpuk2020:
I did it. From uk but can reflash to custom version?
[MTCD Hardware Development] marchnz:
Another SOM successfully recovered today - this SOM from Italy.

The key was MASKROM - every SOM I have received have all needed MASKROM, there is no chance these SOMs could have been recovered without OTG.
[MTCD Hardware Development] profkerim:
i dears,

I have a problem with my px5, the som is the same posted by zdzichu2329, with the tool when it goes into test mode, it goes into failure.

why?

update!

Test ok, but IBD Fail

Update 2

firstly, my problem was black screen no sign of life.

Dev tool, Ibd error, in firmware upgrade, test device Ko error.

in the end, hot air soldering iron + flux on nand flash, do not fully desolder but heat up, Now everything ok.

thanks
[MTCD Hardware Development] elderly-:
Dear guys!

I have a HU that is bricked or somethings. It was black screen one morning, because I had +12V battery problem.

I has only black screen and the backlights flash when press reset button.

I tried so far every way to recover the unit with no succes.

I have OTG cable, it is works fine. The process was fine, but I have always black screen.

I bought a new motherboard, change it, but result is black screen.

I tried an another coreboard (with hdmi output) with new motherboard, result is black screen on LCD, and HDMI output too.

The backlights flash when press reset button. After about a 30-40 secundum, I hear system beep, if press buttons . The motherboard is KLD type.

Please help me, what is the problem.

Thank you.
[MTCD Hardware Development] profkerim:
HI dear,

You checked the molex of the LCD screen.

The screen is totally black or The backlight works

Update the mcu, and check the ca or lcd, if possible replace.
[MTCD Hardware Development] elderly-:
Thx. your reply.

The LCD totally black without backhlight. LCD PCB type is HCT-TFT 5.1.2

The LCD molex is good, for old and new motherboards too.

I did MCU update /here in XDA, from Wadzio user, "Guide how to unlock ricked MCU units" method/, the process was fine. Result is black screen, always.

What is "ca"?

The backlights flash when press reset button. After about a 30-40 secundum, I hear system beep, if press buttons . No sound, no radio, etc. I hear system beep only. There is no video on coreboard hdmi output either.
[MTCD Hardware Development] profkerim:
From the evidence you've done, I think it's the problem, it may have broken, if not from signs of life.

Use a tester, check the voltage, then check the molex pin to pin, for continuity.

Because if you've also changed coreboards, it can't be software issue.
[MTCD Hardware Development] elderly-:
Thank you again.

But no picture when I use an HDMI connection (The HDMI connector is located on the coreboard). Why if there is a problem with the display?

Where can I Find a wiring Diagram for HCT-TFT 5.1.2 PCB?
[MTCD Hardware Development] marchnz:
Suggest use MTCD schematic. Validate supply and MCU signalling between two.
[MTCD Hardware Development] marchnz:
For those with "prepare IDB fail" or similar errors -

Use low level format option in the [upgrade section].

1. First - first must select upgrade .IMG file (suggest using Android 6)

2. Next low level format option.

It will then format emmc block by block. If that fails, emmc may be defective.

If the above works and Android 6 loads OK, then move on to Oreo. Flash from [Upgrade] section with the special sdupgrade OREO .IMG and again do a low level format first with the OREO .IMG selected.

Make sense?
[MTCD Hardware Development] mike2587:
I did the lowformat in Download section. In upgrade section i don't see a lowformat option, i see eraseflash, but nothing seems to work, always have idb fail

Inviato dal mio Z2 Pro utilizzando Tapatalk
[MTCD Hardware Development] BeeOS:
hi guys.

My Dasaita v600 bricked when I was trying to flash Android 8.

Now i`m try to recover it, but usb device is not detecting. (Have 3v on recovery and usb_detect pins)

Coreboard HCT-PX5-REV8.0, consumes 0.08 - 0.1A, is that normal? Maybe my coreboard is dead, or something else?
[MTCD Hardware Development] mike2587:
I found this video https://youtu.be/xemN9UnflVc

But it's not in English and I don't understand if it can be helpful and related to px5

Inviato dal mio Z2 Pro utilizzando Tapatalk
[MTCD Hardware Development] marchnz:
Force MASKROM.
[MTCD Hardware Development] marchnz:
http://wiki.radxa.com/Rock/unbrick

I've suggested all I know.
[MTCD Hardware Development] marchnz:
http://wiki.radxa.com/Rock/unbrick which outlines what I've suggested. Note that 'needle' means putting device into MASKROM.

I've suggested all I know on this issue.
[MTCD Hardware Development] mike2587:
Thanks for your suggestions, I tried in all the possible ways, even with upgrade tool in Linux and still have that IDB fail error. Now I'm trying with flashing single partitions with AndroidTool after unpacking the rom and I have the same error when trying to flash Loader partition, the other partitions give Download failed error. I give up, I spent 300 dollars for nothing, unbelievable, thank you anyway.
[MTCD Hardware Development] marchnz:
What happened when you tried MASKROM? You saw 'found one MASKROM device and not "found one LOADER device"?

I've had this exact issue, using upgrade process resolved and one other time forcing MASKROM first.
[MTCD Hardware Development] moshe3150:
Help

Company I must help, I was able to connect the tablet to a computer via connection usb like they did in the beginning, and I did update to Recovery version 8, and I have no place to insert a micro sd, and he will not let me update What usb via zip, someone has an idea how to install Android 8, or the option to connect a card that I have no place to put on or multimedia card
[MTCD Hardware Development] scorillo_ro:
Now that you have recovery 8 you can install the update.zip from USB!

Edit: If you want to use malaysk's update.zip, you must put his version of recovery 8 first (from his sdupdate.img).
[MTCD Hardware Development] moshe3150:
Do not let me reinstall usb, all the versions i downloaded, and i can not insert micro sd, i do not have sd slot, i only have two usb connection on cable

The recovery tell me installation aborted
[MTCD Hardware Development] scorillo_ro:
Attach a picture with the error
[MTCD Hardware Development] moshe3150:
This is the picture
[MTCD Hardware Development] scorillo_ro:
Did you use "Apply update system" option?
[MTCD Hardware Development] moshe3150:
Yes I did update the system from usb and it does not do the update. Zip
[MTCD Hardware Development] scorillo_ro:
Try other USB stick FAT32 ...

On both USB ports.
[MTCD Hardware Development] mike2587:
Yea I started in MASKROM MODE but I had the same errors. Then I tried with RKDEVELOPTOOLS in linux, did an erase flash and flashed single partitons with "wl" command, followed by the partiton sector number, taken from the parameter.txt in the extracted rom img (stock rom), it did write all the partitions with success, so i did put the stereo in the car, and guess what, still have the Malaysk rom. I lost the battle, I give up, i am asking to Witson for a SoM replacement, but I haven't a good feeling about this request.

Inviato dal mio Z2 Pro utilizzando Tapatalk
[MTCD Hardware Development] Skoda17:
May I ask you if you have realized that? Or have I overlooked that? I hope this is a posibility for me to get oreo although I didnt come into recovery with physical buttons...
[MTCD Hardware Development] sand0rz:
Thank you for this information marchnz

I have searched for the resistors but they all ask how much watt they need to be??

Do you have any link(s) to the resistors
[MTCD Hardware Development] elderly-:
Hi Marchnz!

Thank you. Ok, I try it. Why no picture when I use an HDMI connection (The HDMI connector is located on the coreboard). Why no sound, no radio, etc. if is it LCD problem?
[MTCD Hardware Development] drstoms:
Hi 🙂 where find mask rom PinOut on my HeadUnit px3 board? Thanx 🙂
[MTCD Hardware Development] marchnz:
Try the two pads circled.

Keep supply off, short pads and keep shorted while Turing power on. Assuming driver installed, windows device chime should be heard - then release short on pads.View attachment 5213641
[MTCD Hardware Development] marchnz:
Your question is exactly why I suggested measuring supply lines first. Start with basics, then work up.
[MTCD Hardware Development] drstoms:
After shorting the pins, the radio does not respond, the screen does not turn on, probably a good sign because it may go into maskrom mode, but the computer or android tool does not respond. At what point do you connect the male male cable to your computer?
[MTCD Hardware Development] drstoms:
Nothing is happening in the device manager either. When the pins are shorted, the screen does not move, so you can assume that it enters the maskrom mode. My Windows 7 x64 driver assistant installed 4.4 then 4.8 Still cannot see the computer
[MTCD Hardware Development] drstoms:
That's why I need to connect to Maskrom because it's probably the only way to repair my radio rad 😔Thank you very much for trying to help. I appreciate 🤗

My posts mentioned above with photos show that although the radio does not light up after shorting the pins, which may indicate that it is already in the mask, but despite the fact that the computer does not detect it at all despite the installed rochchip drivers
[MTCD Hardware Development] marchnz:
Radio does not light up?

Assume you've built a OTG jig and connecting to your computer?

That last pic is recovery.

I would say your unit does not support OTG, therefore build a jig and try again.
[MTCD Hardware Development] drstoms:
When I close the pins, I turn on the power, the radio only lights the keys and there is a black screen. Without shorting the pins, the screen starts to boot animation and the picture from recivery failed to maunt is an error after a bad update. I also tried the sd firmware tool also not working. I will want to build these cables with resistors to plug into the motherboard as in your photo. But my board is px3 in the photo you have px5 is this the last way to repair? Will there be the same pins in px3 as in the picture with px5? And my unit supports otg because I tried to upload the firmware through the pen drive and it reads, but it crashes the error that it cannot mount the cache
[MTCD Hardware Development] drstoms:
Last pics recovery install compatible dupdate crush error failed mount cache device block no way for install in recovery