Unfortunately, I can no longer start up after an obviously failed update. I can ‘only’ start USB Disk Mode (hold down the second button from the right when plugging in the USB) and then access the SD card via Mac.
I tried all possible firmware versions in the ‘boot’ directory (I always used the MK2 versions?!?) v4.1.2, v4.1.0, …
No need to update after receiving the unit. @egotape any particular reason why you updated the controller? The sd card image you used is for mk2, including the firmware images. Even though mk2 and mini use the same firmware source code each model needs its own .srec file.
use
firmware-mini-4.1.2.srec.zip (2.2 MB), unzip it, rename the file to update.srec, place it in the boot/ folder on the SD card and restart the controller. The update should automatically start when the controller boots up.
I think I read 1.0 on the left (hardware revision) and 1.1 on the right (bootloader version) and simply pressed the button too quickly, and then there was no way back…