If you possess a legitimate cartridge dump or eShop NSP backup, follow this step-by-step process to apply the :
Which version are you currently running? Which NSP installer application do you prefer to use?
Patches address minor audio-sync issues and frame pacing found in the launch version. Contra Anniversary Collection Switch NSP UPDATE
The collection supports Save States , allowing players to save their progress at any point—a major help given the series' notorious difficulty.
: Always export your save files using JKSV or Checkpoint before applying major update patches to prevent data corruption. If you possess a legitimate cartridge dump or
What is your Switch currently running?
: Open your preferred installer (e.g., A BI) from the Switch homebrew menu. The collection supports Save States , allowing players
Nintendo aggressively pursues DMCA takedowns against sites hosting Switch NSP files, including updates. In 2022, they won a $2.1 million judgment against the ROM site RomUniverse. Updates are considered derivative works, thus protected.
: Return to the Switch home screen, press the + button over the game icon, and verify that the version number has updated. Troubleshooting Common Update Issues Error: "The software was closed because an error occurred"
, players can now select between "Original" (50Hz) or "Turbo" (60Hz) speed modes. Save/Load States