You must have this update installed to access any online features, including the Global Trade System (GTS) and Wonder Trade. PocketMonsters.net Managing the Update as a CIA (3DS World)

: If you're looking for information on how to update Pokémon Ultra Moon to version 1.2 (or "12" as you've mentioned, which might be a typo) using a CIA file, here's a general guide:

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

If you are a fan of the Pokémon franchise and own a modded Nintendo 3DS, you have likely encountered the search query:

If you are managing your software through custom firmware or looking for specific region-free (World) files, here are the technical identifiers: 0004000E001B5100 Product Code: CTR-U-A2BA World / Region Free. Installation Notes

Released to refine the gameplay experience, the v1.2 update specifically targeted several "game-breaking" bugs that were discovered shortly after the launch of Pokémon Ultra Moon . Key fixes included:

Look at the bottom-right corner of the on the main menu (where you select "Continue").