HansD

Looks like new release fixes this problem. Three restarts, three flawless reboots.

The Armbian project will solve the problem in time, someday. Untill then I will use something else, no problem in my particular case. I'm not a technician who can talk firmware, install/partition- and bootprocesses. I cannot contribute, the analysis I give is the max I can contribute. I'm sorry, I just use stuff like Homeassistant.

I'm not into bootmenu editing nor firmaware building. So I cannot and have not checked those suggestions. I just need a reliable host for Homeassistant. By the way: the card is OK: It does work allright with Ubuntu Bookworm It does work with Armbian when using the TF-card slot with the TF-emmc-adapter (but much slower).

Yes, I'have the same problem with my OdroidN2+ and 128GB emmc card. Bookworm variants don't boot at the second en consecutive restarts. Nothing found at mmc1, mmc2 not found and peculiar failed voltage test (-110?!). Ubuntu Bookworm minimal (and other variants) does boot at restarts, so I switched for the time being.