To understand why someone would seek an update NSP, we must examine the patch notes. Konami released several updates for the Switch version post-launch. Key improvements included:
The Contra Anniversary Collection for Nintendo Switch brings ten legendary run-and-gun titles to modern hardware, with updates that significantly expand its content and usability. Latest Update Information (v1.1.0 / v1.1.1)
Most NSP and XCI releases are currently updated to version 1.1.0 or 1.1.1. These patches are critical as they added features that were missing at the initial digital launch:
Japanese Versions: Adds the Japanese regional variants for almost every game in the collection, providing localized title screens and gameplay differences.
Button Remapping: A highly requested feature allowing players to customize their controls across all titles. Contra Anniversary Collection Switch NSP UPDATE
Regional Rating Updates: Recent minor updates (as of late 2025) included rating information for specific agencies like Taiwan, though these do not change gameplay. Full Game List
The collection features classic arcade, 8-bit, and 16-bit entries, including several regional alternates: Arcade: and Super Contra NES/Famicom: (NA & JP versions), Super C SNES: Contra III: The Alien Wars , Super Probotector: Alien Rebels (PAL) Genesis/Mega Drive: Contra: Hard Corps , Probotector (PAL) Game Boy: Operation C Key Features & Content
Bonus eBook: Includes a digital "Bonus Book" with sketches, drafts, an official chronology, and exclusive interviews with veteran producers.
Quality of Life: The collection supports Save States, allowing players to save their progress at any point—a major help given the series' notorious difficulty. To understand why someone would seek an update
Co-op Play: Most games support local 2-player co-op, staying true to the series' roots. Installation Note for NSP Updates
When updating the NSP file on a modified console, the update file is typically around 550MB, which is larger than the base game (approx. 495MB) because it replaces and adds significant regional assets. Download Contra Anniversary Collection NSP, XCI ROM
Konami usually excels here, and Contra is no exception.
Assuming you have a modded Switch (Mariko or Erista) running Atmosphere 1.5.0 or higher, here is the standard workflow to apply the Contra Anniversary Collection Switch NSP UPDATE: Assuming you have a modded Switch (Mariko or
Note for Emulator users (Ryujinx/Yuzu): Right-click the game, select "Manage Title Updates," and point the emulator to the .nsp file. The emulator will automatically detect the version.
The latest Contra Anniversary Collection Switch NSP UPDATE (version 1.1.0) was quietly rolled out by Konami, but it was the Switch hacking community that dissected the changes. Here is the official and unofficial changelog:
Contra lives and breathes on precision. Small improvements to input timing, save stability, and menu flow aren’t just maintenance — they protect the core thrill: the rush of clearing a checkpoint, learning a boss pattern, and nailing a no-death run. This update preserves that old-school difficulty while trimming frustrations that used to feel unfair.