Hi,
same here. Odroid XU4.
Works fine using Armbian_24.11.1_Odroidxu4_bookworm_current_6.6.60_minimal.img
No boot using Armbian_25.2.1_Odroidxu4_bookworm_current_6.6.75_minimal.img
Upgrade sometimes causes mismatch errors.
After upgrade the device does not boot.
It is not a hardware issue, but a configuration issue with Armbian_25.2.1_Odroidxu4_bookworm_current_6.6.75_minimal.img
See you