There is a problem to make upgrade firmware sd card.
Tryed to do it by SDboot -faild
Every time : Writing MBR failed!
Etcher - ok for creation emmc. But don’t want load…
Tryed 4 images.
Apply update from SD card -don’t work.
I know that i’m just user in computers.
Have someone step by step VIDEO of flashing manjaro or ubuntu to board?