As of April 2026, the current state of updates for Nintendo Switch focuses on the major release and subsequent hotfixes. For users looking to update their local files or NSP backups, the latest stable version for the Switch is Ver. 1.4.5.6.4 . Latest Version Overview: Ver. 1.4.5.6.4
If you download an NSP claiming to be “Terraria v1.4.5 – Dead Cells Crossover,” do not install it. That update is unreleased. You will corrupt your save data. terraria switch nsp update top