Just bought a PI4B 8 GB Unfortunately it does not run SDcard images from my older PI4, boot process hangs with something like 'use more modern software'. It runs OK with 2020-12-02-raspios-buster-armhf-full.zip (just downloaded from raspberry org)
Web search talks about these 4B having a boot EEPROM.. This is a problem as there is a year or more of work in the current images.
Whats up?