If you are running a legitimate copy of the game, simply connect to the internet and download the patch.
Note for digital preservationists: If you are utilizing an NSP backup, ensure your CFW (Atmosphere, etc.) and Sigpatches are updated to the latest firmware (typically FW 16.0.3 or higher). Update 1.1.0 requires a newer base encryption key to run without errors. Super Mario Party SWITCH NSP -Update 1.1.0-
Update 1.1.0 introduced a rotating Daily Challenge. Every 24 hours, you are given a specific set of three minigames to beat for coins. It’s a small addition, but it gives you a reason to boot up the NSP every day. If you are running a legitimate copy of
This isn't just a "stability improvement" update. Nintendo actually added substantial content that makes revisiting the game worth your while. Update 1
Have you tested Update 1.1.0 on your Switch? Let us know in the comments if you noticed any performance changes in handheld mode!