RZ is not entering usb drive mode after flashing

#1

After initial success in wiping the built in android and installing provided armbian 20, radxa stopped outputting video, so ive tried reflashing the os using the provided method of wiping the emmc and trying again.
After numerous attempts and shuffling the bins and imgs rzero is not mounting as a Win10 recognizable usb drive.
Tried Khadas VIM burning tool with the provided upgrade img and while it started the image udpade failed on download.
Im really worried that my radxa is faulty (corrupted emmc or similar).

#2

I had success erasing the emmc using the linux commands from here: https://github.com/TheMediocritist/RadxaZero_Experiments/wiki/How-to-completely-erase-Android-from-eMMC
and flashing the new image with windows using raspberry imager. Make sure that after you load the rz-udisk-loader.bin you close RZ_USB_Boot_Helper as it somehow disturbed the writing process. Make sure the verification succeeds, otherwise it hasn’t work and you have to try again.

#3

So You use linux commands from powershell?
Or run on linux machine?
Also Ive finally managed to force it to mount when I launched the rz_usb_boot helper as admin, then used rz-fastboot-loader and then rz-udisk-loader. after that ive failed to flash the linux using balena etcher. probably because of rz-boot-helper-running around in the background.

#4

I have run the from a linux machine. Because dd failed for me every time i have used windows to flash the emmc

#5

Ive now managed to flash the armbian properly using Your tip for disabling the RZ_USB_Boot_Helper.
Also when encountered the problem with not being able to mount the emmc ive used khadas vim usb burning tool with generic img from vim provided. it failed but managed to unclog the buffer or sth.
Anyway it finally worked.
The support for this device on windows is abysmal to say the least. The boot helper is kinda working but then it borks the formatting and flashing. Sometimes it fails to mount the emmc no matter what You do without any way to set clean state to the board.