To ensure the game and its updates work correctly, several supplemental files are required beyond the game ROM itself:
If you follow the steps above—proper file placement, sigpatches, and update order—you will be exploring the Kanto region with your partner Pikachu within 20 minutes. Always remember to backup your legitimate save files using JKSV or Checkpoint before tinkering. pokemon lets go pikachu switch nsp xci upd work