This indicates that the repack includes multiple update layers (both 1.4.0 and 1.4.1) or is pre-patched to the latest version. This saves the user from having to install the base game and each update separately.
When you see , it refers to a specific way the game files are bundled. NSP: The standard digital format for Switch titles. luigimansion3nspupdate14014140mu repack
Luigi’s Mansion 3: Understanding the v1.4.0 & v1.4.1 Updates for NSP and Repacks This indicates that the repack includes multiple update
Ensure your Switch system firmware is updated to a version compatible with the 1.4.x era (typically Firmware 10.0.0 or higher). NSP: The standard digital format for Switch titles
If using a repack that includes the Multiplayer Pack, verify that the DLC "tickets" are also installed, or the new 1.4.0 costumes may not appear in-game. Conclusion
While Nintendo often releases minor stability patches, the v1.4.x cycle was significant because it finalized the support and addressed several "soft-lock" bugs that plagued earlier versions. 1. Multiplayer Pack Part 2 Content