The base XCI for Pokémon: Let’s Go, Pikachu! shipped with a few game-breaking bugs (specifically the "Lavender Town softlock"). The v1.0.2 update fixes:
Pokémon Let's Go, Pikachu! is a role-playing game developed by Game Freak and published by Nintendo for the Nintendo Switch. The game was released in 2018 and is a re-imagining of the classic Pokémon Yellow game. The XCI file is a format used for Switch game cartridges, and we'll be focusing on the XCI version of the game. pokemon let%27s go pikachu xci