Disclaimer: This guide is intended for educational purposes and to assist users who legally own a copy of LEGO CITY Undercover. Downloading or distributing copyrighted software (NSP files) without ownership is illegal. Homebrew and modding carry inherent risks; you assume full responsibility for your device.
To play the updated version, you generally need two files:
It sounds like you’re referring to a specific release of LEGO CITY Undercover for the Nintendo Switch, likely in NSP format with an update file (e.g., v1.0.1 or later). Here’s what’s interesting about that particular version:
The latest update for LEGO City Undercover on the Nintendo Switch is Version 1.0.2, which was released to improve general performance and stability. Update Details Version: 1.0.2 Release Date: April 28, 2017
Patch Size: While official notes are rare, early reports for the Day 1 patch (v1.0.1) indicated a size of approximately 479MB.
Primary Changes: The update focuses on optimizing performance and addressing stability issues. While some players still report inconsistent frame rates in the open-world sections, the patch is intended to smooth out these technical hiccups. Installation Guide
For those using NSP files or physical cartridges, ensure you are running the most recent version to avoid crashes:
Check Version: Highlight the game on your Home Menu, press the + or - button, and look at the version number under the title. LEGO CITY Undercover Switch NSP UPDATE
Manual Update: If not on 1.0.2, select Software Update > Via the Internet while connected to a network.
Storage Tip: Moving the game data to Internal Storage (instead of a microSD card) can improve loading times by up to 33%. Key Game Facts
Lego City Undercover has been updated to 1.0.2 : r/NintendoSwitch
The story of LEGO CITY Undercover follows legendary police officer Chase McCain, who returns to LEGO City to hunt down the notorious criminal Rex Fury. Chase had previously helped arrest Rex, but the criminal has recently escaped from Albatross Prison and is leading a city-wide crime wave. To stop him, Chase must go deep undercover, utilizing eight different disguises—each with unique skills—to infiltrate various criminal organizations across 20 distinct districts. Key Updates and Performance
The Nintendo Switch version has received several updates to address performance issues that were present at launch. BREAKING NEWS: LEGO City Undercover runs great on Switch 2.
Running in Nintendo Switch 2's docked mode, Lego City Undercover is much smoother on the new console.
I’m unable to produce a full paper, guide, or distribution file for downloading or installing LEGO City Undercover Switch NSPs, updates, or any pirated/cracked content. Sharing or requesting Nintendo Switch ROMs, NSPs, or update files violates copyright laws and the policies of this platform. Disclaimer: This guide is intended for educational purposes
However, I can help with:
If you own a legitimate copy and need help applying the official update (e.g., version 1.0.1 or 1.0.2), let me know, and I’ll provide step-by-step instructions using legal methods.
The latest official software update for LEGO CITY Undercover on the Nintendo Switch is Version 1.0.2. While the game has remained stable for several years, players using NSP files for backups or emulators typically look for this specific update to ensure maximum compatibility and performance. Update Details & Performance
Version 1.0.2 Highlights: This update primarily aimed to optimise performance. Early players reported inconsistent frame rates in the open-world sections, and this patch was released to help smooth out the experience. File Size:
NSP Update Size: Historically, minor content patches for the game have been around 479MB.
Total Base Game Size: The digital eShop version is approximately 7.6 GB.
Cartridge Requirement: Physical copies of the game initially caused confusion with a box claim requiring a 13GB download; however, the retail version is playable directly from the cartridge, though a "small content update" (1.0.1 or 1.0.2) is recommended. To play the updated version, you generally need
Performance Metrics: On the Switch, the game generally runs at 30 FPS in the open world at 1080p (docked), with some interior locations reaching 60 FPS. How to Update
If you are using the official hardware, you can trigger the update by: Highlighting the game icon on the HOME Menu. Pressing the + Button on your Joy-Con. Selecting Software Update > Via the Internet.
Note on NSP/XCI Usage: Using NSP files (Nintendo Submission Package) typically requires a modified console. Ensure your firmware is compatible with the version requirement of the 1.0.2 update to avoid "Software was closed because an error occurred" prompts.
Do you need help with DLC content or specific cheat codes for LEGO CITY Undercover?
The Ultimate Guide to NSP ROM Updates: A Step-by-Step Tutorial
This guide covers the game’s patch history, what specific updates fixed, and technical details regarding the NSP format for the Nintendo Switch version.
As of late 2026, TT Games has moved on to LEGO 2K Drive and the rumored LEGO Disney spinoff. No further updates are planned for LEGO CITY Undercover. However, the modding community has created a “Performance+” unofficial patch that reduces dynamic resolution even further for 45+ FPS on overclocked Switches. That, however, requires LayeredFS and is not an NSP.
If you are after the most stable, complete, and feature-rich official version of LEGO CITY Undercover on the Nintendo Switch – the v1.0.1 (or v1.0.2) NSP update is your final destination.