For a safe and official experience, it is recommended to update the game directly through the Nintendo Switch Home Menu while connected to the internet.
The string refers to a compressed archive file typically found on pirate or ROM-sharing websites. Based on the naming convention, POWRAN : Likely a tag for the release group or uploader. POWRAN-BFTG-NSwTcH-NSP-Update292-Ziperto.rar
9.2 patch notes for Power Rangers: Battle for the Grid or how to Switch games? For a safe and official experience, it is