The new Opi board, using the popular rk3399 at a good price.
Has a debian image... not sure what kernel it uses.
Where to start ?
@_ppiotr3k Did you by any chance use the same SD card for Armbian that was used for Xunlong image before?
If so, try wiping either all of the SD card (it will take a long time) or the last 33 sectors of it before writing Armbian's image there.
This will clear the recovery GPT partition table from the end of SD card.
This partition table makes Rockchip's loader trying to use GPT layout for booting - which we don't use.
root@xyz:~# fdisk -l /dev/mmcblk1 | head -1