It sounds like you’re looking for a written summary or “paper” on the Pokémon Ultra Sun Update (v1.2) for 3DS (World CIA, updated).
General Stability: Includes "various fixes to improve gameplay" and general stability improvements. CIA Installation & Troubleshooting pokemon ultra sun update 12 3ds world cia updated
Region Matching: Ensure the update CIA matches your game's region (e.g., USA, EUR, or World/Region Free). A mismatch can lead to error codes or the game failing to recognize the update. It sounds like you’re looking for a written
Competition Eligibility: Following this patch, the previously banned moves mentioned above were reinstated for official Play! Pokémon video game tournaments. Technical Details and Requirements pokemon ultra sun update 12 3ds world cia updated