According to official patch notes from Nintendo Support , the following specific issues were resolved:
If you are looking for specific installation guides, you will typically need Production Keys (prod.keys) and Pokemon Let-s Go Pikachu XCI ROM -Base v1.0.2...
The Digital Legacy of Kanto: Pokémon Let’s Go and the Role of Emulation The release of Pokémon: Let’s Go, Pikachu! According to official patch notes from Nintendo Support