Update 1.2: Released in February 2018, this was a critical patch aimed at fixing game-breaking bugs that occurred during competitive play.
Requirement: This update is mandatory for all online functionality, including battling and trading. Bug Fixes & Changes pokemon ultra moon update 12 3ds world cia
World Region: The Nintendo 3DS games, including Pokémon titles, are region-locked, meaning games from one region might not work on consoles from another region. The "World" region typically refers to a console or game version that is not region-locked or can work across multiple regions, though this term isn't commonly used in the context of 3DS games. Update 1
Pokémon Ultra Moon Version 1.2 Update is the most recent official patch for the game on the Nintendo 3DS. Released in February 2018, this update is necessary for all online features, including Link Battles and the Battle Spot. Update Version 1.2 Details Release Date: February 7, 2018. Approximately 539 Blocks (~67 MB). Major Fixes: Resolved a bug where using the moves Forest’s Curse Power Trick String Shot The "World" region typically refers to a console
Official Method: You can download the update directly from the Nintendo eShop or through the HOME Menu prompt.