yashsingh1/xdaforums huggingface dataset:
[MTCD Hardware Development] czarek1212:
hello, I am asking for more accurate photos of the otg cable because those from the first page of the topic are not expressive, and I have a question if I have an android 8 is how to upload rom Malaysk by otg? does not work botowalna sd card, so the cable remains enough to upload via sdupdate.img cable from botable sd card and later flash by recorvery malaysk rom?
[MTCD Hardware Development] scorillo_ro:
Added another drawing to my post from the first page. I can't imagine a more suggestive way to represent the cable, so I hope this will help you.
[MTCD Hardware Development] polgoz:
[MENTION=4768815]scorillo_ro[/MENTION], thanks for your effort. Can you remember how you did HCT PX5 Rev4.0 2gb board wake up?

I read many times both threads related to OTG and cant make my PC shows my unit.

many thanks
[MTCD Hardware Development] scorillo_ro:
Unfortunately I wasn't able to recover that SOM. I think I damaged it during the first trials...

I ended buying a new one (4GB) on which I was able to use the OTG
[MTCD Hardware Development] polgoz:
Ouch, yes l read your history, Im on the same way... but Im not surrender yet... unit still appears on windows, but cant get It stay up more than 10 seconds.

Maybe trying mounted over MCU change something.. is a KLD like yours. If you have some idea let me know please.. and thanks!!

P
[MTCD Hardware Development] czarek1212:
I managed to build an otg cable, I loaded sdupdate.img malaysk and now I have a logo when I turn on the radio "mod malay" now I can not go into recovery as if the recovery has disappeared as a fix to install rom malaysk
[MTCD Hardware Development] marchnz:
I could upload flashable separate partition files for Malaysk Android 8 which you flash with android tool (search this forum for steps .)
[MTCD Hardware Development] czarek1212:
I installed rom malaysk using otg does not detect me usb now you have any idea to fix it?
[MTCD Hardware Development] grondines2@gmail.com:
Thats m'y board !! He goes on car head unit rkpx3 ,trying to find how to flash straight,need help please
[MTCD Hardware Development] gomylle:
If you read through the thread quite a few of us does not have working USB after upgrading to OREO. Unfortunately it does not seem like there is a fix yet. I am not even sure anyone is working on a fix :(
[MTCD Hardware Development] czarek1212:
Before using OTG I had Oreo USB worked properly OTG I used to install the ROM Malaysk
[MTCD Hardware Development] polgoz:
I was able to install Oreo using OTG too. After a lot of problems I got it! I cant make it work on win xp, just use a win 10 pc and wins!..
[MTCD Hardware Development] Jeff.monroe:
Can't get the OTG cable to work

Hi there,

I’ve got a KLD MTCD, that I attempted upgraded from Android 6 to 8.

I followed that Russian video on youtube but the upgrade process stopped somewhere and never went to the “erasing” part.

After that, the unit was bricked.

So, I decided to try the OTG method to bring it back to life.

I soldered all the parts together, just like “marchnz” suggested.

I use a Laptop with Windows 7 x86.

Installed driver assistant v4.5 and Android tool 2.39

The USB cable is just about 5-8 centimeters long (tried 3 different ones so far).

I checked USB Power on the red wire, it is 5,12 volts.

I swapped the green and white wire.

I tried resistors 12K with 15 and 22K.

but the SOM doesn’t get recognized by the OS, no action in the device driver app.

What is wrong here????
[MTCD Hardware Development] tonijuvani:
I twisted the green and white wires together and wrapped in tin foil. Somehow that helped and the device got detected successfully.
[MTCD Hardware Development] polgoz:
Try swap GND between pin 4 and 5
[MTCD Hardware Development] Jeff.monroe:
Thanks guys, I will try that tonight and post later
[MTCD Hardware Development] gomylle:
Please. If someone manage to get USB work again. Please let us know
[MTCD Hardware Development] Jeff.monroe:
Tried that, doesn't work... any other suggestions?

---------- Post added at 12:35 PM ---------- Previous post was at 12:34 PM ----------

Tried that, doesn't work... any other suggestions?
[MTCD Hardware Development] polgoz:
I try over win xp 5 days/nights and nothing.. when I try with Win 10, in first place didnt work, I thought that SOM was burnt. I re try over xp one more time, nothing again, till on one shoot become responsive for the driver (but not readable by tools), so I try on win 10 again and bum! was recognised.

Cant explain why didnt work on xp or why didnt work on win 10 in first try.

Keep trying..

I was near to dump all many times.. but works.
[MTCD Hardware Development] Foose86:
I read something about changing ground between pin 4 and 5.

how are tge pins counted? 1,2,3,.... per line, so that ground is on pin 3 in the original post?

or is it 1,3,5 in the first line and 2,4,6,.... in the second line?
[MTCD Hardware Development] polgoz:
This way
[MTCD Hardware Development] polgoz:
I cant get MASKROM stage any more.. but SOM is detected by pc.... not loaded by the driver, but chime on pc is present. Some idea ? [MENTION=4974080]marchnz[/MENTION]

If desconnect GND, device manager shows a usb defective unit or something like that... when reconnect GND, PC chime again, and device manager delete the defective usb item.. but nothing shows on any software.... help!
[MTCD Hardware Development] packyman:
Does this OTG Flash Firmware work on a FYT-6026?

My device is stuck in bootloop and needs a new firmware.
[MTCD Hardware Development] marchnz:
try and let us know.
[MTCD Hardware Development] typos1:
Whats an FYT-6026 ?

We need an MCU to identify your unit.
[MTCD Hardware Development] Clandaries:
Google says it is a Joying PX5 headunit.
[MTCD Hardware Development] typos1:
You need to look at settings/about device, not Google - if theres no "MTCD" or "MTCE" before the MCU number than its not an MTCD/E head unit and [MENTION=4974080]marchnz[/MENTION]'s solution may not work. Joyous' RK3368/PX5 units are not MTCE/E units, they use a different platform and the SoM will be different so probably will have different pin outs.
[MTCD Hardware Development] Clandaries:
It is not my headunit, look at our names, i just wanted to help ;)
[MTCD Hardware Development] typos1:
Oh, lol, soz ! :)
[MTCD Hardware Development] geowiwi:
Great instructions, went straight to Hal9k mod V3.0 with update from USB with this on a bricked PX5 SOM with stock Android 6. Using two stray 120Ohm/330Ohm resistors also did the job. :good:
[MTCD Hardware Development] ali20042004:
hi

please help me

I make cable and connect px5 and my pc find device when open android tools 2.35

can you tell me next level step by step?
[MTCD Hardware Development] elalvaro19:
Help with connections

Hello

I have an mtcd drive that I can not enter into the recovery mode in any way, this is the only way to recover it but I do not clarify with the information. I have a px3 motherboard that I attached in the photo. In order to detect the motherboard on the computer, do I have to make a wiring like the one attached to the photo or do I have to do something else?

Please I need your help is the only way I have to recover my unit
[MTCD Hardware Development] elalvaro19:
I have made the otg usb but it does not work, it does not detect the computer. The resistors are 12k and 15k in pin recovery (pin 20) and pin usb detect (pin 28) I have a voltage of 1.8V, can that be the problem? If I remove the resistance 15k the computer detects the usb but not in the correct mode . Where is the problem?
[MTCD Hardware Development] RomainD2:
Hi,

I have a PX5 android head unit with a really slow Wifi. I would like to try USB tethering in order to have a better connexion. I have found an android app, which is called Easy Tether Lite, but the device need to support OTG. It seems that the PX5 doesn't have native OTG support, and I found your thread.

Do you think I can apply your tutorial in order to have OTG and run internet through it ?

Thanks!
[MTCD Hardware Development] capu81:
I've installed Oreo with this solution but now my USB ports not working. I've read others have this problem. There's a fix?
[MTCD Hardware Development] scorillo_ro:
Can be a connectivity problem if you used thick pins to connect your cable. Try to reseat the SOM after you gently bend out the corresponding pins on the motherboard.

---------- Post added at 10:30 AM ---------- Previous post was at 10:24 AM ----------

No
[MTCD Hardware Development] capu81:
Thank you. Today i'll try and report back. :good:
[MTCD Hardware Development] 7604timo:
Thank you for the OTG method, [MENTION=4974080]marchnz[/MENTION] .. I bought a spare PX5 SOM from aliexpress to try this out on and put Malaysk's ROM on it, so I could swap the SOM back with the stock one if I broke it.

I used the binary linux tool to flash sdupdate.img, then applied the Malaysk update.zip from his recovery.

At first, the USB sockets didn't work when I put the SOM back into the head unit, so I bent the pins a little and re-seated it and the USB worked again. Then I had the wifi issue (wifi working only after a reboot, not after auto-sleep mode). I decided to put the stock SOM back in and flash Hal9k's ROM and so far everything is perfect - USB and wifi working well.

Tim
[MTCD Hardware Development] scorillo_ro:
[MENTION=4974080]marchnz[/MENTION] Maybe you should edit the first post and add an advice for people to use thin pins for their otg cables in order to avoid the damage of the SOM connectors, although along the thread it has been suggested many times that this is very likely to happen if thick pins are used...
[MTCD Hardware Development] capu81:
Thank you to [MENTION=4768815]scorillo_ro[/MENTION]. I've fixed my SOM. I've insert a very thiny piece of alluminium in the pins i've used for flash. USB now work! :good:
[MTCD Hardware Development] marchnz:
Done - thanks for the suggestion
[MTCD Hardware Development] 0rn0lf:
Hey, can someone tell me if this is correctly wired? I dont want to fry my SOM and the plan looks like its making a short circuit.
[MTCD Hardware Development] heXXer321:
THANKS

Hello from Germany :)

Thanks for the howto with OTG Cable.

A-sure 9" softtouch PX5 Android 8 für VW

I was not able to enter the recovery with the softtouch, i have tired all combinations also with keyboard but nothing :-/

With OTG Cable 1 hour and it runs perfectly :)

Hal9K very nice

Für Deutsche Hilfe stehe ich zur verfügung einfach melden.
[MTCD Hardware Development] InTheWorks:
Part number for SOM mating connector?

Does anyone have a part number for the SOM mating connector? The OP suggests:

Having had a brief look at mine (without removing the SOM) it doesn't look like it's a 0.100" or 0.050" pitch header, but probably 2mm?
[MTCD Hardware Development] behnammodern:
found the problem with usb after using OTG

I have found the problem for usb after using OTG:

its 100% the damage you have made with thick pins to SOM

dont waste your time downgrading to 6 , its not software problem

both pins with green and white wire(data of usb) push the SOM receivers away so when you install it on your device is not working because connection between pins on pcb board and SOM has been lost because you used thick pins and push the receivers away

you can see it yourself by pushing the SOM toward the PCB

it wont break , just push it hard you can see usb starts to work

Im working on a fix , I will post the fix here

maybe with some soldering I can make a connection between pcb board pins and SOM
[MTCD Hardware Development] typos1:
Not sure if it was this thread or another one, but someone reported that they fixed it by putting some foil into the holes to make the connection.
[MTCD Hardware Development] SilentO:
please delete - sorry
[MTCD Hardware Development] SilentO:
As previously mentioned, i have tried to upgrade to android 8.0 using the steps described above. However, i could not get my HU to enter recovery mode. I followed the guide in this youtube video (https://www.youtube.com/watch?v=lPQgV_55Rkk). After days of trying, download firmware again and again and hundreds of attempts to enter recovery mode, i decided to restore the unit back to Android 6.0. I was successful in restoring my HU back to Android 6.0 but cannot enter recovery mode. I was able to enter recovery before upgrading the firmware but i only did it one time just to make sure that i can do it.

this is the unit that i have (2GB RAM and 16GB),

https://www.aliexpress.com/item/Das...&terminal_id=fcb232a365bb4ad18dfd15a930aa2fc9

what i am doing wrong (99% is operator error)?

the sequences that i did to boot into recovery mode,

1. Press Reset and hold until button light blinks.

2. Release Reset and press again.

3. Release Reset and press again.

4. Release Reset.

i fear that im performing the wrong steps to get to recovery mode or lost recovery.

appreciate if someone can help me out.

btw this unit has a microSD but for GPS. anyway to utilize this microSD to upgrade to Android 8.0?
[MTCD Hardware Development] bansy:
Need Help To Recover Boot looped China Head Unit (ML-CK1018)

I have been purchased a Car stereo from Aliexpress seller Zeepin Official Store on November 11, 2018 and I have installed on my car after I received the product. The product model is given below

........aliexpress.com/item/Universal-2-Din-Car-Multimedia-Player-7-Android-8-0-Audio-Video-Player-Touchscreen-Bluetooth-WiFi/32921725367.html?spm=a2g0s.9042311.0.0.11374c4d8oiRnu

This product is known by model number is ML-CK1018. After installation it was working fine and later I tried to change the boot logo with a custom picture because my vehicle is not coming in the pre installed logo’s and there is option for custom logos in the radio so I utilize it. This is the only thing I do with the radio. After I restarted the radio, it is booting up and looking for the logo again and again and not coming to the normal operating mode.

Now i received software from manufacturer Ezonetronics, but not able to flash on the radio. It has a USB Male to male connector. As per their instructions I tried to flash using computer but not able to connect to radio in flash mode, all key combinations tried. not succeed. have any solution for this ?

---------- Post added at 05:36 PM ---------- Previous post was at 05:32 PM ----------

https://www.youtube.com/watch?v=JHAAh6XzuQY

this shows the exact problem of my radio, but this link posted by others

---------- Post added at 05:43 PM ---------- Previous post was at 05:36 PM ----------

Recent post by Azmil2307 also describing the same issue in xda developers, see below link

https://xdaforums.com/android-auto/android-head-units/help-to-recover-bootlooped-china-head-t3888286

---------- Post added at 05:50 PM ---------- Previous post was at 05:43 PM ----------

https://drive.google.com/open?id=1ZP9gyACyZRz_FYAFHs6aJ-m78IqmMLr1

above picture shows a usb connection in the radio pcb
[MTCD Hardware Development] marchnz:
With OTG flash, entering recovery is not mecessary as the full image is flashed.
[MTCD Hardware Development] marchnz:
Try Q&A thread, this thread details how to create an OTG cable and flash SOM.
[MTCD Hardware Development] SilentO:
Thanks [MENTION=4974080]marchnz[/MENTION] for pointing out my mistake.

Reread through all the posts and you are correct on the image was flashed and I should have Android 8.0 running after download. I don't know what's wrong but it would boot up a black screen after the navigation system screen followed by Camry logo.

I followed [MENTION=8672736]blu1111[/MENTION] instructions from post #99, https://xdaforums.com/showthread.php?p=76224309

My MCU is v2.99.

Do I need to do a full erase? If I do, when in the process should the step be performed?

Thank you againView attachment 4685236
[MTCD Hardware Development] marchnz:
Flash FULL image and not just recovery. Read through this and my other recovery threads for info.
[MTCD Hardware Development] SilentO:
Thank you [MENTION=4974080]marchnz[/MENTION]

I think I have met my end.

Followed [MENTION=4733205]dotto[/MENTION]rniu instructions, from post #102

https://xdaforums.com/showthread.php?p=76238029

It completed the download using Androidtool v2.39 but immediately loose USB connection. I tried everything to get the computer to recognize the usb rockchip again but it doesn't do anything. All voltages are there. 5V and 3.3V. tried swapping the white and green came as well, nothing.

Looks like I need to save money to get a new head unit. [emoji24][emoji24][emoji24][emoji24]

Anyone want this dead SOM?
[MTCD Hardware Development] marchnz:
Try forcing SOM MASKROM, should allow you to reflash full ROM. Details can be found in this and my bootloop thread.
[MTCD Hardware Development] bansy:
thread: Need Help To Recover Bootlooped China Head Unit (Android 8.1 Go) AC8227L

https://drive.google.com/open?id=1ZP9gyACyZRz_FYAFHs6aJ-m78IqmMLr1

Please check the above attached picture showing the OTG connections and suggest what kind of cable is suitable for flashing. Also explain how to do it. Thanks in advance.
[MTCD Hardware Development] marchnz:
Bansy; this is not a service. Consider contacting re-seller for support, or searching threads for information specific to your head-unit.
[MTCD Hardware Development] andymx5:
My PX5 was stuck in bootloop, couldn't enter recovery.

I made a jig for USB OTG. Was able to see the device in Loader mode.

Couldn't upload firmware, always got IDB errors. I tried to boot into MASKROM by shorting the pads as found on another post;

This did not work.

I tried the Force Maskrom in Androidtool and was able to get a bit further, but on completing it said 'download IDB failed' or similar.

At this point, no matter what I try - Windows will not see the SOM when i try to connect to PC. No USB chime, nothing.

Have I killed it?
[MTCD Hardware Development] SilentO:
sorry for more questions but i just want to recap the steps before the computer stop recognizing the SOM.

1. I was able to upgrade firmware and then download firmware but can only see black screen with control buttons (cannot enter boot recovery mode either).

2. Repeated step 1 again but still only black screen with control buttons (cannot enter boot recovery mode either).

3. Restored HU back to Android 6.0 successfully - but lost recovery (cannot enter boot recovery mode)

3. Tried lowerformat before download android 8.0 - computer stop recognizing SOM (USB) after download completed.

do i need to rewire my OTG per attached drawing?

https://dl.xda-developers.com/4/4/2....JPG?key=vxFsAiESdj4LMfhMCQcFKQ&ts=1547583218

[IMG="OTG drawing"]https://dl.xda-developers.com/4/4/2/3/2/6/8/MTCD_SOM_OTG.JPG?key=vxFsAiESdj4LMfhMCQcFKQ&ts=1547583218[/IMG]

my SOM header only has 72 pins but your drawing has 75 pins. do i have the same pinout?

my SOM is similar to this SOM,

https://dl.xda-developers.com/4/4/4....jpg?key=-7gkuLkIDEsArBJOzxe15w&ts=1547583821

[IMG="SOM"]https://dl.xda-developers.com/4/4/4/7/7/7/7/20180301_185254.jpg?key=-7gkuLkIDEsArBJOzxe15w&ts=1547583821[/IMG]

do i need to use a tweezer and short it like picture?

https://dl.xda-developers.com/4/4/5....jpg?key=8D7gtmDgZGEQteoPD3O6bA&ts=1547583840

[IMG="Tweezer"]https://dl.xda-developers.com/4/4/5/0/6/9/4/20180318_135100.jpg?key=8D7gtmDgZGEQteoPD3O6bA&ts=1547583840[/IMG]

do i have to use firmware from [MENTION=3556393]SkyBeam2048[/MENTION] to flash because i will only have 70 seconds to flash?

just want to make sure before i proceed to prevent further damage to the SOM.

thank you,
[MTCD Hardware Development] marchnz:
Unless you've shorted the SOM, I dont think so. Suggest confirming supply / USB connections at the SOM header, solder side, if OK try another machine/USB.

Re. IDB - see this post for instruction: https://xdaforums.com/showpost.php?p=76085919&postcount=61 only change being once Android 6 is confirmed OK, use full partition-by partition to install Oreo.

All else fails, you're welcome to send it to me in NZ to try.
[MTCD Hardware Development] andymx5:
I've checked the voltages solder side, all OK. Also checked to connect to USB on other machines with no success.

I had read the quoted post re: IDB before, Although no matter what, I couldn't get the board into MASKROM mode.

I think at this stage I'm now looking at a replacement unit (Thanks for the offer but return postage from UK to NZ is prohibitive as well as protracted but I do appreciate the help and offer!).
[MTCD Hardware Development] radoslavsto:
I have Witson media W2-B5762 (PX5) 4GB + 32GB + 1.6GHz with installed Android version 6.0.1 and mcu version (MTCE_MX_V2.96).

I installed ROM for 8.0.0 (update) everything works OK. except BT (BT module MD725).

Can I restore the media on Android 6.0

Radoslav
[MTCD Hardware Development] marchnz:
yes. uze sdcard or otg method.
[MTCD Hardware Development] bjt2:
Hi Marchnz, where abouts are you in NZ? I'm in Christchurch..

---------- Post added at 01:30 AM ---------- Previous post was at 12:53 AM ----------

So my SoM won't detect in Windows at all, I've confirmed the usb cable is very short, I've tried it with a powered hub, tried swapping green/white wires and even tried various pairs of resistor values. Will it help to get into maskrom mode? Do I short it whilst powering it by usb or just short them with no power?
[MTCD Hardware Development] radoslavsto:
greeting

Where can this be seen which type of module 725 (type 1, type2)?
[MTCD Hardware Development] SilentO:
Does anyone know of a mating connector for the PX5 SOM?

I'll check the main board for the part number of the connector that's on the board but if anyone here has the part number and can share, would much appreciate it.

Need to get to the bottom of this dead HU that I have.

Thank you
[MTCD Hardware Development] SilentO:
Can someone help me confirm the voltages?

When I correct my OTG to the computer I get the following voltages

Red = 5.0Vddggh

Orange = 3.37V

White = 0V

Green = 0V

When connected to a SOM,

Red = 5.0V

Orange = 1.8V

White = 0.6V

Green = 0.6V

Are these the correct voltage readings?

My computer does not even make the USB plug-in chime when I connect the SOM to my computer. My computer does chime when I plug a USB stick into a USB slot.

Does anyone know what's the minimum voltages at pins 20, 28, 29 and 30?

My
[MTCD Hardware Development] SilentO:
Anyone wants my SOM?

DOA
[MTCD Hardware Development] vegechuang:
Is there a detailed step by step using Windows 7/10?

much appreciate.
[MTCD Hardware Development] Migueliyo85:
I have the same problem!! I dont know what to do!!?
[MTCD Hardware Development] krzychunh:
After connecting what file I need to load to have an android 8 as I have 6?

- how to do it step by step?
[MTCD Hardware Development] marchnz:
What steps have you tried after reading through the thread?
[MTCD Hardware Development] marchnz:
Step by step in thread.
[MTCD Hardware Development] Migueliyo85:
I made the cable and soldered it to the SOM board. I have tested on several PCs with the drivers but none of them recognizes me.
[MTCD Hardware Development] marchnz:
Havent tried MASKROM?

What lead up to you trying to flash directly, a failed upgrade or wanting to upgrade, or unit stopped booting?
[MTCD Hardware Development] Migueliyo85:
I tried maskrom and nothing.

When I tried to upgrade to android 8 trough sd card, something failed and then, the screen went black
[MTCD Hardware Development] marchnz:
Triple check connections.
[MTCD Hardware Development] Migueliyo85:
I have checked all the connections. everything is well soldier. in the orange cables I have 2.4v. in black 0 and in red 5v. when I connect the cable to the board the voltages change. the computer does not detect it. I've tried on several computers and nothing ...

Thanks for help me
[MTCD Hardware Development] marchnz:
how did you trigger [recovery]. Feel free to post detail.
[MTCD Hardware Development] Migueliyo85:
I dont understand You... Sorry?