: Attempting to run a ROM intended for a different emulator (like a MAME 0.78 set) through FBNeo can trigger this message because the naming or file structures may differ.
(or your ROM path) and ensure the folder is correctly scanned. Batocera/Recalbox users: Ensure your ROMs are in the /userdata/roms/fbneo folder as specified in the Batocera Wiki generate a specific DAT file from your current emulator version to verify your files? AI responses may include mistakes. Learn more fbneo romset unknown
If a user’s ROMs match FBNeo v1.0.0 but the emulator is v1.0.4, the set becomes “unknown.” : Attempting to run a ROM intended for
FBNeo is actively developed and frequently updates its ROM definitions to match current MAME standards. If your ROM set is from an older version of FBNeo or an outdated MAME collection, the core won't recognize it. AI responses may include mistakes