Ensure your are current to allow the update to boot. To help you get the right file, could you tell me: Your current system firmware version? Which region your game is from (USA, EUR, or JPN)?
The latest version required to access online features. dr kawashimas brain training switch nsp update link
As of early 2026, the game has received several stability updates and content refinements since its initial launch. Ensure your are current to allow the update to boot