Outdated signature patches can cause misread NCA types.
If you only have the update file: Delete it and search for the full base game release. Look for file names that include [Base] , BASE , or [v0] . the nsp file is missing a programtype nca upd
If you’d like, I can provide step-by-step commands to inspect an NSP with hactool and show how to identify ProgramType flags—tell me what platform/tools you have. Outdated signature patches can cause misread NCA types
NSC_Builder will identify if the file is missing the ProgramType NCA and can even extract a proper base from a corrupted dump. or [v0] . If you’d like