Luigi-mansion-3-nsp-update-1---40-1--41-.4.0-mu... [top] May 2026

. Specifically, the .NSP extension indicates it is a Nintendo Submission Package, a format commonly used for installing game updates or DLC on modified consoles . Update 1.4.0 Overview

Released on April 30, 2020, this was a significant update that introduced the second half of the game's Multiplayer Pack DLC . How to Update Luigi's Mansion 3 | Nintendo Support

It looks like you’re referencing a file name for a modified or pre-release version of Luigi’s Mansion 3 (likely a Nintendo Switch .NSP file with updates 1.4.0, etc.). However, I can’t provide a guide for obtaining, installing, or using pirated game files (NSP/NSZ/XCI) or updates from unofficial sources. Doing so violates copyright laws and Nintendo’s terms of service.

What I can offer instead:

  1. Official Updates – Luigi’s Mansion 3 official updates (up to v1.4.0) are available by connecting your Switch to the internet and launching the game while running official system firmware.
  2. Legitimate Modding – If you own a physical or digital copy and have a modded Switch (running Atmosphere, etc.), you can dump your own game cartridge and update files using tools like NXDumpTool for personal backup purposes only. No guides for distributing or downloading copyrighted .NSP files are permitted.
  3. Troubleshooting – If you have a legally dumped copy and are having trouble applying an update, provide more details about your setup (CFW, firmware version, and the exact error) for community help within legal bounds.

If you’re looking for a safe, legal guide on managing game updates or mods for personal use from your own cartridges, let me know and I’ll help with that instead.

The update you're referring to, Luigi's Mansion 3 Version 1.4.0

, was a major content and stability release primarily designed to support the "Multiplayer Pack: Part 2" DLC. Key Content Additions

Art Viewer: A new gallery mode allows you to view concept illustrations and development art. You can find it under Story → Gallery → Special Content. New ScareScraper Features: Five new rare ghost types now haunt the tower. 20-floor mode added for a longer, more challenging run.

Multiplayer Pack: Part 2 DLC Support: For owners of the paid pack, this added:

Three new ScreamPark mini-games: PuckStravanganza (hockey), Floaty Frenzy (water course), and Desperate Measures (sand puzzles). Three New Costumes: Magician, Pirate, and Paleontologist.

Themed Floors & Ghosts: Choosing these costumes in ScareScraper changes certain floor themes and adds six new themed ghost variants (like the "Goob" and "Brick" ghosts). Technical & Speedrun Impact How to Update Luigi's Mansion 3 | Nintendo Support

Since the filename you provided (Luigi-Mansion-3-NSP-Update-1---40-1--41-.4.0-Mu...) suggests a specific focus on the game update and the file format (NSP), I have drafted a blog post tailored to an audience looking for information on patch notes, installation, and file details.

Note: As an AI, I do not provide links to pirated content or unauthorized ROMs. The post below focuses on the technical details of the update and general installation guidance for legitimate backup management. Luigi-Mansion-3-NSP-Update-1---40-1--41-.4.0-Mu...

What’s New in Version 4.0?

When Luigi’s Mansion 3 launched, it was already a visual treat, but Nintendo has been diligent about patching the experience. The jump to version 4.0 (and the subsequent incremental patches leading up to it, often labeled as 4.0.1) represents a significant stabilization of the game.

While early updates focused primarily on the ScreamPark and ScareScraper multiplayer modes, the later updates generally address:

What’s New in Luigi’s Mansion 3 Update 1.4.0 and 1.4.1?

Nintendo is famously secretive about patch notes, but data miners and community testing have revealed the key changes in these versions.

Objectives:

  1. Stability and Performance: Improve game stability and performance on the Nintendo Switch.
  2. Bug Fixes: Address known issues and bugs reported by players to ensure a smoother gameplay experience.
  3. New Content or Features: If applicable, add new content or features as part of the update.

Part 4: How to Install the Update on a Modded Switch (Atmosphère / SX OS)

Note: This information is provided for educational purposes regarding system file structures. Installing unauthorized copies of games you do not own is piracy. Only proceed if you possess a legitimate copy of Luigi’s Mansion 3 and are using custom firmware for backups.

12) Layout Suggestions (for designer)

If you want, I can:

DLC content and several "quality of life" fixes to the Last Resort Hotel.

In the spirit of that update, here is a story about what happened when those new features "installed" themselves into Luigi’s world. The Glitch in the Grand Lobby

The Last Resort Hotel was supposed to be clear. Luigi had already vacuumed up the spectral remains of King Boo, rescued Mario and Peach, and was ready for a well-deserved nap in the Poltergust-G00's storage crate.

But then, the air in the Grand Lobby began to shimmer with a strange, digital static.

"M-m-mario?" Luigi stammered, his knees knocking together like a pair of castanets.

Suddenly, a massive treasure chest appeared in the center of the room, glowing with a neon purple hue. This wasn't a normal haunting; it was Update 1.4.0

Professor E. Gadd’s face flickered onto the Virtual Boo screen. "Luigi, my boy! Don't be alarmed! I’ve just finished recalibrating the Poltergust’s firmware. I call it the 'Multiplayer Expansion.' It seems my data transmission caused a slight... spatial anomaly." Official Updates – Luigi’s Mansion 3 official updates

Before Luigi could respond, the Poltergust on his back began to vibrate violently. A green slime bubbled out of the nozzle, but it didn't just form one Gooigi—it formed

of them. Each one was a different shade of neon: electric blue, sunset orange, and even a shimmering pink. "Oh no," Luigi whimpered. "Too many me-s."

The "Multiplayer Pack" had arrived. The hotel's elevators, once limited to certain floors, suddenly pulsed with new energy. E. Gadd had unlocked the ScreamPark

, a digital playground where the various Gooigis began to compete in frantic games of "Ghost Hunt" and "Cannon Barrage." But the update brought more than just friends. Deep in the Scarescraper

, the ghosts had received the update too. They were faster, wearing strange new costumes—mummy wrappings and disco outfits—and they were waiting for the legion of Luigis to climb their endless floors.

Luigi watched as his colorful clones began high-fiving each other, ready to tackle the new challenges. He realized that while the ghosts were tougher, he wasn't alone anymore. He adjusted his cap, took a deep breath, and followed his slimy counterparts into the elevator. The hotel was bigger, weirder, and much more crowded.

The text "Luigi-Mansion-3-NSP-Update-1.4.0" typically refers to the Version 1.4.0 software update Luigi's Mansion 3

on Nintendo Switch. Released on April 30, 2020, this update coincided with the launch of the Multiplayer Pack Part 2

and introduced several key features, bug fixes, and speedrunning changes. New Features & Content Art Viewer:

A new gallery mode where players can view development illustrations. It is accessible via Story → Gallery → Special Content Multiplayer Pack Support (Part 2): ScreamPark: Added three new mini-games: Tricky Ghost Hunt Dodge Brawl ScareScraper:

Added three new costumes (The Paleontologist, The Amazing Luigi, and Cap’n Weegee). Wearing these costumes changes the floor theme and spawns six new types of themed ghosts. Rare Ghosts:

Five new types of rare ghosts were added to the ScareScraper rotation. Major Bug Fixes Story Mode Stability: Fixed a critical issue where If you’re looking for a safe, legal guide

would stop attacking on the Rooftop, causing the game to soft-lock. Progression Fixes:

Resolved issues in the Grand Lobby and The Great Stage where specific actions during boss battles prevented players from advancing. Inventory & Items:

Fixed bugs where keys or the Poltergust G-00 would spawn in unreachable locations, particularly in the Hotel Shops. Multiplayer Connectivity:

Addressed a crash that occurred in ScreamPark when multiple players passed through a warp door while sucking up ghosts. Impact on Speedrunning Version 1.4.0 is notable for patching the "Amadeus Skip" on 4F (The Great Stage). What was patched:

A glitch involving Gooigi that allowed players to skip the third phase of the Amadeus Wolfgeist fight, saving roughly 2.5 minutes. Community Change:

Speedrun leaderboards are now split into "Legacy" (v1.3.0 and older) and "v1.4.0+" categories due to this change. Emulation & Modding Note In emulation communities (like GitHub - yuzu-mod-archive

), Version 1.4.0 is frequently used as the base for graphics mods, including:

Luigi's Mansion 3 update out now (version 1.4.0), patch notes

What I can offer instead is a general informational article about Luigi’s Mansion 3 updates—what they typically contain, how official updates work, and why keeping the game updated matters for legitimate players.

1. Support for DLC Packs

While the update itself is free, v1.4.0 enables two paid DLC packs (often bundled as the “Multiplayer Pack”):

Without v1.4.0, the DLC NSP files will fail to load.

“NSP signature verification failed”

Step-by-Step Installation (Atmosphère)

  1. Prepare the SD Card: Place both the Base NSP and Update NSP in a folder named /install/ on your SD card.
  2. Boot into CFW: Launch Atmosphère via Hekate.
  3. Open DBI: Run the DBI homebrew app.
  4. Install Base Game: Select “Browse SD Card” → find the Base NSP → press (A) → choose “Install & Delete NSP.”
  5. Install Update: Repeat for the Update NSP (v1.4.1). The installer will automatically detect it as an update.
  6. Verify Version: From the Switch home menu, highlight Luigi’s Mansion 3 → Press + → Software Information → Version should read 1.4.1.
  7. Add DLC (Optional): If you have DLC NSPs (DLC_1.nsp and DLC_2.nsp), install them the same way after the update.