Even if you get a clean file, installing it requires a modified Switch. Connecting a modded Switch to Nintendo’s servers almost guarantees a console ban. That shiny update 1.1.1? You’ll only be able to play it offline, severing the "Jamboree" from the online party mode that makes the game special.
This update, released in November 2024, was primarily a technical patch focused on stability and bug fixes rather than adding new gameplay content. Super-Mario-Party-Jamboree-Update-1.1.1.NSP.rar