Formatted to FAT32 (highly recommended over exFAT to prevent data corruption).
Launch the game. Once you unlock the Wild Area in the story, visit a train station (such as the one in Wedgehurst) to confirm that the game recognizes your Armor Pass and Crown Pass, allowing you to travel to the DLC areas. Troubleshooting Common Errors pokemon shield switch nsp xci dlc update 132 install
Ensure your CFW has the latest custom sigpatches installed; otherwise, the console will reject the update and DLC files. Formatted to FAT32 (highly recommended over exFAT to