I tried to use my Raspberry Pi Zero W OSMC SD card (Raspberry Pi 1… disk image) on my Pi 3A+ (and on my Pi 3B that’s know to work). The Pi 3A+ (and 3B) didn’t boot, but the ACT LED did flash. I have downloaded a Pi 3 image and I could try
boot partition to my SD card’s
boot partition (to see what changes between the versions) and then copy the changes to my SD card.
Is there a better way to migrate from a Pi Zero to a Pi 3A+? Why are there different images? If it’s 32/64 bits, why can’t my Pi 3A+ read the Pi 1 disk image?