Hi @arne_f
I managed to cp the u-boot from /usr/share/u-boot/nanopi-r1/u-boot-sunxi-with-spl.bin. Now the boot is stuck in the starting kernel … statement.
It was like that from the very beginning when I install the IPFire core 157 on SD then boot from SD. Could this be a version issue? I tried the most earliest version I can download (core141) but still the same. I can only get around by using the FriendlyWRT uboot. Could you advise?