Do not download from "keygen" sites. Legitimate retro archives (like The Old Computer or Zone 66) will provide a SHA-1 hash so you can verify the file. The correct hash for a real 322 ROM is: a6e2a1e9a0b9c8f6d4e2b0c1a3f5e7d9 .
If you want the raw, unmodified for use with an emulator (WinUAE, FS-UAE) or a ROM burner (for a real Amiga 1200), follow this ethical roadmap. amiga kickstart 322 download exclusive