Unit is a Joying JY-UQ124 PX3 - https://www.amazon.com/gp/product/B00XGEYU26
No idea what specific MCU and all that it is now as I bricked it several years ago when I accidentally put the wrong firmware on when attempting to go back to stock from a Malaysk ROM, and now only get black screen on power on with front panel lights on. Can't get into recovery, attempting to restore via SD card isn't working - never seems to start loading from the SD, screen just stays black.
Bought a new radio, put this one on the shelf, and now I'm trying to recover it again via the ST-LINK. Except that the only 5 holes empty on my board aren't marked, and I suspect it may actually be an unpopulated USB connector.
The PX3 SOM is a card edge RAM style connector, so I can't easily attach to header pins there either.
Do I have options here for recovery, or am I SOL with a paperweight on my hands?
SOM or MCU, photo show SOM. What is bricked, som or MCU
I'm _guessing_ it's the MCU? If the SOM gets bricked, wouldn't I still be seeing _something_ on the screen at boot?
It's been a while since I played with this one last, but I seem to recall that I accidentally tried to push the update image from my Sofia unit into this one, and didn't catch my mistake until after it was too late to do anything about it.
But honestly, I'm not really sure what exactly is wrong with it at this point, nor do I remember exactly what I did to it prior, other than trying to roll back to stock from a Malaysk ROM, and it didn't boot afterwards.
Related
Hi, so i went on a little adventure with my MTCD PX3 RK 3188 unit, first i wanted to experiment with some new RAM upgrades, so I tried quite a few different manufacturers and specifications as I work for a PCB/PCA manufacturer. But I think i have a pair that works now, cant remember the exact part name but it is manufactured by Micron 1 GB modules. The unit boots, and i can access recovery and flash roms without problems. The issue arises when it tries to bot the selected ROM, the unit shows the splash screen of the rom selected and then proceeds to boot the ROM with the flashing car logo. But after the car logo has blinked for a minute, the screen shuts off and the device reboots.
So, while fiddling inside the recovery menus I've discovered what i think might be the issue, firstly I cannot wipe the device, if selected the cmd prompts: "Data wipe failed"
But if i try to install a new ROM I can also observe that it does not update uboot.img because "E: Can't find uboot".
This leads me to belive that while I was experimenting with the RAM modules, I might have overheated the internal storage chip, in turn corrupting some data.
So now i need some assistance:
1. Is there any way to flash a new bootloader?
2. Can i change the internal memory chip and just flash the MCU and rom to it? How would i do that? Will it fix the problem?
3. Is there any other fixes that I should try?
Thank you for any suggestions.
Head over to OTG thread to flash ROM directly or scenario where eMMC is corrupt or blank.
HerpyDerpy said:
Hi, so i went on a little adventure with my MTCD PX3 RK 3188 unit, first i wanted to experiment with some new RAM upgrades, so I tried quite a few different manufacturers and specifications as I work for a PCB/PCA manufacturer. But I think i have a pair that works now, cant remember the exact part name but it is manufactured by Micron 1 GB modules. The unit boots, and i can access recovery and flash roms without problems. The issue arises when it tries to bot the selected ROM, the unit shows the splash screen of the rom selected and then proceeds to boot the ROM with the flashing car logo. But after the car logo has blinked for a minute, the screen shuts off and the device reboots.
So, while fiddling inside the recovery menus I've discovered what i think might be the issue, firstly I cannot wipe the device, if selected the cmd prompts: "Data wipe failed"
But if i try to install a new ROM I can also observe that it does not update uboot.img because "E: Can't find uboot".
This leads me to belive that while I was experimenting with the RAM modules, I might have overheated the internal storage chip, in turn corrupting some data.
So now i need some assistance:
1. Is there any way to flash a new bootloader?
2. Can i change the internal memory chip and just flash the MCU and rom to it? How would i do that? Will it fix the problem?
3. Is there any other fixes that I should try?
Thank you for any suggestions.
Click to expand...
Click to collapse
I think you can try to use rockchip tools to erase the flash memory and to flash again your image.
As px3 and px5 are interchangeable....
Check on forums as there is some information of building a OTG cable for px5 to allow you to connect the coreboard to USB on PC and allows you to use rock chip tools
Enviado desde mi SM-G950F mediante Tapatalk
//MTCE_LM not LS, can't edit the title anymore.
Changed customer version from 1 to 3 and after reboot, i have no screen and no buttons working.
Only after car power is cut off (5-10min), the unit comes back but shuts down within 10-15 sec, not enough to quickly go to mcu config and change back to "1". Then nothing works, as if it doesn't get power anymore. I unplugged it and tried to hook up a miniHDMI cable but there's no connector on this board....not sure i can even get to recovery, but i'll try again tomorrow.
I have an older v3.06 LM MCU but no working config, so i hope to get into recovery somehow and flash both.
I suppose any LM MCU version would do, along with a CFG file, as long as it's version 1 (recognizable from _1 after mcu version or check in factory settings-other-customer version "1")
does anyone have an idea where to change customer version in a dmcu.cfg using hex editor?
or is it possible to connect and edit the MCU values stored on the unit itself?
it's a PX5 MTCE LM unit, ultraslim format.
https://www.aliexpress.com/item/Eun...-Stereo-GPS-for-VW-Passat-B6/32866279122.html
Good day, please can some help if possible.
I have a car unit with a boot issue, and the place who makes them has them made in China as I can tell, but they dont know who can give me the software to flash again.
The unit is in boot loop, or similar and just starts up, then nothing on screen.
Please help me, I used to be very good at this but haven't been here for ages and not familiar with the new units.
slide200sx said:
Good day, please can some help if possible.
I have a car unit with a boot issue, and the place who makes them has them made in China as I can tell, but they dont know who can give me the software to flash again.
The unit is in boot loop, or similar and just starts up, then nothing on screen.
Please help me, I used to be very good at this but haven't been here for ages and not familiar with the new units.
Click to expand...
Click to collapse
Hi,
Is it px3,px5?
Can you get wit reset buton (if theres one) in bootscreen?
If you don,t know wich hardware it,s just try to put on diverent android image on sd card in gps slot
Diablo-2u said:
Hi,
Is it px3,px5?
Can you get wit reset buton (if theres one) in bootscreen?
If you don,t know wich hardware it,s just try to put on diverent android image on sd card in gps slot
Click to expand...
Click to collapse
Hi, I dont know model as the unit was not working when I got the unit.
I am not even sure what image to use on sd card, or I would try it already, I only know Dixon make this unit.
slide200sx said:
Hi, I dont know model as the unit was not working when I got the unit.
I am not even sure what image to use on sd card, or I would try it already, I only know Dixon make this unit.
Click to expand...
Click to collapse
Is there a reset hole/button? If so put a pin in it and hold long enough and push and hold on button.
You can also check the hardware inside(the chip types)
Make sure there is no sd card in the sd slot with wrong software because it auto loads when start up.
Diablo-2u said:
Is there a reset hole/button? If so put a pin in it and hold long enough and push and hold on button.
You can also check the hardware inside(the chip types)
Make sure there is no sd card in the sd slot with wrong software because it auto loads when start up.
Click to expand...
Click to collapse
Hello yes, there is a reset button, and I have used it, long press / hold, with no help.
I only get the loading screen, then the touch settings screen, after touching, then next screen black for ever again.
I have the unit open, but a silver cover over the Chip / main area on main board.
Please help me and thank you so far for everything
Picture of inside of unit
Diablo-2u said:
Is there a reset hole/button? If so put a pin in it and hold long enough and push and hold on button.
You can also check the hardware inside(the chip types)
Make sure there is no sd card in the sd slot with wrong software because it auto loads when start up.
Click to expand...
Click to collapse
Please see picture above for the inside view.
I have no idea what to flash on to this unit, any help is appreciated.
Good evening all
I’ve tried flashing my px5 8.0 to hal9k. I had read that first you must flash to 3.x to then Android 9. I put the boot card img on an 8gb card and put the unit into recovery. The flash worked and brought up the first screen. Then went to update from sd and now I’m left with the second screen. See pic.
Now i am unable to get back into recovery.
Any help would be great. Thanks
So I am unable to post outside links.
The first screen boots up black with navigation system upgrade card.
The second screen that comes up is black with red green and blue squares at the top with a load of Chinese writing it says at the very top in small writing - px5 v1.1
forgot to mention I have the unit that is unable to get into recovery by pressing the power / reset buttons. I believe it had mod installer app that put the unit into recovery.
Did you ever figure this out? Im having the same problem with my px5 head unit (same screen)
Use OTG method per my thread/signature
Hi all,
first post in this section, so be nice I have a very recent build Xtrons TQ700L unit that i have managed to soft(?) brick after rooting and removing a factory app ("Easy Connect"). On boot I get the initial logo, then after a long time a black screen that goes nowhere. I'm looking for advice on the best strategy to recover/rebuild it.
Hardware details...
build number:
rk3399-userdebug 10 QQ2A.200305.004.A1 eng.hct2.20200521.120545 test-keys
MCU version:
MTCE_GS_V3.53_3
As i understand it i have an "MTCE, GS" MCU and can ONLY flash MCU updates from the GS manufacturer. The MCU is probably not the problem here though.
I have a PX6, Android 10 build date of 20200521. Am I correct in saying i can flash any android 10 ROM designed for the PX6 that is newer than this date? Are the only differences between manufacturers cosmetic, like the nice launcher Xtrons supplies?
When i look on Yandex (https://yadi.sk/d/umCvHqCDzHccr), there is no PX6/Android 10 firmware at all from "GS", but there is from "HCT". Should i be looking at flashing the HCT/PX6/Android 10 firmware date 20200612 from the recovery menu? I can get to recovery easily enough by holding, then double clicking the reset button - i just dont know whether i should be flashing part of or the whole of the above package to fix my brick.
thanks.
So in case this helps anyone else, it was an easy fix. Baby steps below.
- grab the latest "Android 10", "PX6/RK3399" factory ROM either from threads here, or from Yandex. I found HA3_RK3399_10.0_ota(20200706).zip here on XDA.
- unzip the outer layer ZIP file and copy the inner "update.zip" to a micro SD card. The stock recovery systems dont allow any selection of ROM file names, so it must be update.zip.
- put the SD card in the "GPS" SD slot.
- with the unit on, reboot to recovery. My way was using a nail to hold the reset button in until the touch button lights began the flash, then quickly release and double click the reset again.
- in recovery, menu items can be scrolled through by either clicking the reset button, or (in my case) touching anywhere on the screen (easier).
- push and hold the rest button (or screen) to select the item.
- do a "wipe data/factory reset" (i guess) to be sure of cleaning out the old mess.
- then do "Apply update from SD card". it should automatically find the update.zip and apply it to all partitions.
- select reboot. Done.
The ROM i used was a "HA" branded generic ROM, so it didnt have the same launcher as my original "GS" (Xtrons) branded ROM. Xtrons wouldn't supply me with their stock ROM when i asked. The generic one was a little better anyway, since it has a stack of boot animations to choose from, whereas the Xtrons one only had the Xtrons logo. It also doesnt have the Easy Connect app, which is what I was trying to remove in the first place!
Additionally, i was able to obtain root easily by using the wifi ADB method here.
I did the same thing. Stupid app kept opening.
I don't have a micro sd card slot, hope it works with usb stick. Don't have one at the moment to try.
Same as yours.
Also, entering recovery mode you..
Hold reset button for 10 sec, release and immediately press it once.
I have a dicola px6 mtce
I'll update if i get it working.