: Update110 indicates this is specifically the version 1.1.0 software update for the game.
: .rar is a compressed archive file used to bundle the update for easier downloading. Technical Context & Risks BAYONETA3-NSwTcH-NSP-Update110-Ziperto.rar
: Ziperto is a well-known third-party site for hosting Nintendo Switch ROMs and updates. : Update110 indicates this is specifically the version 1