I have Rock5b a Debian Bookworm previously flashed to microSD card and thereafter to a 512GB NvME with full Bebian Bookworm KDE on that. Everything worked for a couple months until … it wouldn’t boot. I think I’ve tried everything recommended herein, including various 30W and higher power supplies, USB-C cables, reflashing to a using balenaEtcher to a brand new 32GB MicroSD, multiple HDMI cables to my monitor (known working as I tested with other PCs), and subsequently bought and installed an eMMC module, repeated the process, still no boot.
By no boot I note that it can boot to showing a flashing green LED near the mcroSD slot, but never showing CLI or desktop KDE GUI. So, questions:
-What is the latest image known to work and that I should flash to the microSD.
-What is the latest image known to work and to boot into the NvME with full Debian Bookworm KDE NvME.
-When I try to set up the eMMC do I use the same microSD image as above, and do it with the eMMC and/or NvME installed on the mobo.
What are steps to diagnose and/or fix the problem? thx in advance