It appears to be either:
If you are setting up a retro gaming handheld (like an Anbernic, Retroid, or TrimUI) or a PC emulator, you follow this general "story": bios dc naomizip
Unlike simple console BIOS files, naomi.zip is a . It does not contain a single file; instead, it holds multiple regional and revision binary files (such as epr-21576h.ic27 used for NAOMI M4 cartridges). It appears to be either: If you are