I’ve suspected this for some time now, I had initially flashed an A02 r32.3.1 image to an A02 board and used it for 2 months. Then when I got my hands on a B01 board I had tried to boot the same sd card on the B01 (I’m pretty sure the SOM boards are compatible) there was no signs of life. An etcher flashed official r32 image (not through the SDK manager) booted fine on both boards.
I had initially dismissed this as some B01, A02 OS compatibility issues
Now that I have another B01 board, I tried both the SDK and etcher flashed images and the result is the same - an r32 image flashed via the SDK manager (Jetson Nano Devkit P3448, no extra SDKs) will work on the same device it was flashed on but not on another. Are the images somehow tied to the hardware UUIDs? I need to know this because I do own quite a number of boards now and do swap SD cards frequently - to test firmware etc.