Batocera supports Pi 2, 3, 4, and 5. Do not use a Pi 4 ISO on a Pi 5.
A common misconception among newcomers is searching for a "Batocera ISO." batocera iso
A little confused about what emulators Batocera already has… Batocera supports Pi 2, 3, 4, and 5
The Batocera ISO is essentially a bootable image of the Batocera operating system. This ISO file contains everything needed to install Batocera on a compatible device, including the operating system itself, pre-configured settings, and sometimes, additional packages or software for specific hardware support. Batocera supports Pi 2