please help. bootloop android HU - Android Head-Units

hello guys
hope you can help me. i have a HU based in the Tonghai HU, that is stuck in bootloop
the problem is that my HU is the one that doesnt have hardware keys. the only hardware key i have is the reset button, wich only reboots the radio.
this happens after i tried to insert a custom bootlogo. no in only shows the bootlogo for 2 seconds and reboots. is there anyway i can reinstall the firware by usb or by th sdcard?
please help

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NR5210 NEWSMY CADPAD III probobably brick. HELP!

Hallo everybody,
i have a rpoblem with may CARPAD III NR5210.
IT's a RK3188 with STM32 chip. I try to flash XDAUTO rom, it works. Monday i reflash because i don't flash with clear system and some error appears. During the proced i wipe all (system, data, etc..) but the battery broke down.
Now i can't put it in recovery mode. Even start teh boot logo XDAUTO in sreeen.
I try to push reset button, one time, two times, for 20 seconds and more, but notting works; boot logo appares in the screen.
I try to disconnect to battery of the car for a night. No works, boot logo starts.
I try to put 5 fingers in the screen during the start, no works, boot logo starts.
i try to connect the OTG port in my PC to flash with RKTOOL, but the unit isn't recognized (it's works 2 month ago).
it's seem brick ;( ;( ;(
Only procedure that seem work is SD BOOT procedure. I try whit the SD BOOT procedure that i found in internt for PX5 MTCD unit, and no boot logo starts... only a illuminated black screen, but nothing appares becouse i think i don't have the right software into the SD.
Please, help me.
Many many many thanks
Some one have some procedure that can halp me?
Please, i don't know no other way to resolve this ptoblem.

PX6 stuck in boot loop

Hey!
My head unit is stuck in bootloop. It's an xtrons Android 10 PX6 unit MTCE_GS_V3.67_3 (Nov 7 2020).
I tried to flash Hal9k with the modinstaller downgrading to Android 9. Got stuck in bootloop.
That can happen. So I went back to Android 10 again and installed CHS2_RK3399_10.0(20200424)img via SD - stuck in bootloop.
I have access to recovery though and tried wipe cache and factory reset.
I tried to find help in old threads, pressed with 5 fingers on the screen during boot-up, and tried tapping on the screen.
The unit is connected to a DC power supply on my desk and I always disconnected power between all tries. No success.
Any more ideas?
Thanks for your support! It's well appreciated!
I have a similar issue with Ownice C800 PX6 rockchip 3399, i changed an option on the setting to have it default to off instead of On, after it rebooted nothing shows up on the screen. i can access the recovery menu and did a factory rest and nothing happens, i installed
Malaysk ROM for PX6 RK3399 with Android 10 and the update was successful but still no boot at all, the recovery log shows failure to create file in memory. not sure if the setting made the memory protected and why the boot is failing.​
My apologies previous threaders I cannot fix your bootloop, but have similar problem.
Question to bluefreak, how did you get into recovery mode?? from a bootloop??
My original item is a 4gb ram 64 gb rom, px6 unit, previously I put a russian rom flashed via update to system on it, I think I paid 20 usd for it and it worked a treat until my son used the car, several years past warranty. And it has gone into bootloop.
I think the flashed rom was Malaysk?? I may be wrong.
I have a reset button, held it in for a minute still bootloop, connected another rom via usb and it will not flash, just bootloop. I have also attempted many methods from google and youtube.

Helpp pleas!

Hi
I have a problem with the car dvd android flyaudio mgcol2-msm8909
In boot i have pressed update recover
After that, a message appeared to me loading recovery Then restart and then the same message "What is the solution?" Appears
Please
MOD EDIT:
Did you find a solution to this?
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TS10 android unit stuck in boot logo ! Any tool to flash the firmware again ?

Hi ! i have TS10 android unit and y try to flas various firmware to able to change resolution to 1280 x 720 and now i have an stuck in boot logo ! Any tool to flash the firmware again ?
I wanted to do a factory reset on my TS10 radio. After the restart, the software was reinstalled but then the car battery was dead. Now I see on the display only the Peugeot logo and nothing works. Is there a way to make the device work again or do I have to send it in. Thank you​

bosion rk3399 PX6 with DSP stuck at boot logo

hi, everyone, I need some pointers on how to fix this device, it was working fine for about 11 months until it got stuck at the boot screen, the seller says it is a mainboard issue, but have not even the slightest idea on what might be wrong.
if I make an SD update card, the logo displayed at boot changes, but never gets past it, i have no idea on how to make it go into recovery mode, or where to connect an usb cable to connect to PC
anyone else faced the same issue?

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