Once installed, the DLC should automatically be recognized by the base game.

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: Use a tool like 7-Zip or WinRAR to extract the .rar file. You should see one or more .nsp files (the actual DLC data).

Choose , navigate to your file, and press A to install.

: Ensure your custom firmware (CFW), such as Atmosphere , has the latest sigpatches installed. Without these, the Switch will fail to verify the unofficial file and block the game from launching. 2. Installation Methods

You can install these files directly on your Switch using a title manager. Popular options include: : Open DBI on your Switch.

Alternatively, use the feature to drag and drop the file from your PC directly into the "SD Card Install" drive that appears on your computer. Tinfoil : Open Tinfoil and navigate to the "File Browser" . Locate your .nsp file and select it to install. Awoo Installer / Gold Leaf : Open the app and select "Install from SD" .