Luigi-mansion-3-nsp-update-1---40-1--41-.4.0-mu... ●

If you are managing your backups using custom firmware (CFW) on your Switch, here is the standard procedure for applying the v4.0 NSP update:

This update had a significant impact on the speedrunning community. Version 1.4.0 patched out several major sequence-breaking skips (notably in the Paranormal Productions and Dance Hall areas), leading community moderators to split leaderboards into "Legacy" (pre-1.4.0) and "1.4.0+" categories to keep competitive play fair.

. Players could now encounter themed ghosts based on the "Disco" and "Pharaoh" aesthetics from the main campaign. These additions weren't just cosmetic; they required players to adapt their strategies, fostering better communication and teamwork in the online community. 3. Technical Refinements and Accessibility Luigi-Mansion-3-NSP-Update-1---40-1--41-.4.0-Mu...

A new gallery located in Story → Gallery → Special Content that allows players to view development illustrations.

Several "soft-lock" issues that prevented game progression were resolved: If you are managing your backups using custom

| Fragment | Meaning | |----------|---------| | Luigi-Mansion-3-NSP | The game name, plus file type (NSP) | | Update-1 | First update file in a set | | ---40 | Version 1.4.0 (extra hyphens likely from copy-paste errors) | | 1--41- | Version 1.4.1 | | .4.0 | Redundant mention of 1.4.0 | | Mu | Early cut-off of “Multiplayer” or scene group “Multi” |

: Nintendo Submission Package. This is the official file format used by Nintendo for games, updates, and DLC distributed through the Nintendo eShop. Players could now encounter themed ghosts based on

: Players originally used Gooigi to manipulate room boundaries, clip behind dressing room doors, and force an auto-save that bypassed the lengthy, multi-phase piano boss fight.

: A frantic pool-based survival game avoiding mines in regular floats.

: Open your preferred homebrew NSP installer menu on the Switch.

Article last updated: 2025 (reflecting final official version 1.4.1). Search keywords: Luigi’s Mansion 3 NSP, Luigi’s Mansion 3 update 1.4.1, Luigi’s Mansion 3 DLC NSP, switch game updates. Did we answer your query about “1.4.0 Mu”? Let us know in the comments below.