Verify your system firmware is updated to support the latest game update version.
The physical Dave the Diver: Anniversary Edition released on June 28, 2024, specifically for the Nintendo Switch. It includes exclusive collaboration content with the fighting game Guilty Gear -Strive- dave the diver anniversary edition nspupdate link
Dave the Diver Anniversary Edition: Managing Updates and System Security Verify your system firmware is updated to support
The only safe and guaranteed method to get the Anniversary update is through the official channels: dave the diver anniversary edition nspupdate link