thanks. Booting from SD card actually still worked so that was enough for me

Hi, I started my nanopi from pendrive containing armbian, upgraded it (which unfortunately also upgraded u-boot apparently) and after rebooting it loops over: U-Boot SPL 2017.11-armbian (Jan 24 2018 - 11:07:32) DRAM: 1024 MiB Trying to boot from MMC2 NOTICE: BL3-1: Running on H5 (1718) in SRAM A2 (@...