@Franky66 did you manage to boot from eMMC when flashing it directly there? I'm not able to get the recent Odroid N2 Bullseye image to boot from eMMC at all, regardless which way. Doing the exactly same on SD card works fine. I also tried it with a custom image build, installing the Armbian "current" kernel package (Linux 5.10.123) and flashing respective U-Boot via write_uboot_platform: Fails the same way when flashing to eMMC, works from SD card. Here is the log from serial console: