While some users in the modding community use terms like "nsprar" or specific ROM formats to discuss compatibility, this update is mandatory for all players wishing to access official Nintendo Switch Online features. Patch Notes and Fixes
The core of Version 1.1.1 is a fix for a niche but game-breaking online error:
Previously, certain nickname configurations would cause the "parent device" (room creator) to see a "No other participants" error, forcing all other players to close the software.
You cannot participate in worldwide matches or join friend rooms unless all participants are on the same version. Future Context: Beyond 1.1.1