1. I used several different microSD cards - the result is the same.
2. I am able to restore the firmware and did it, but it is extremely reluctant to do it again. Although I also suspect that the reason lies in the console card reader.
3. I know that you are working under Linux, but I hope that you will answer my question. On Amlogic tv-boxes, the system is transferred to the eMMC with the help of the "installtointernal" command. In TV boxes on PK3328, can the system be transferred from the microSD card in the same way?
Thank you for the answers.