: Some modded builds are not designed to work with the latest update. Community documentation for specific mods often recommends not updating beyond a certain version to ensure full compatibility. In this case, you may need to uninstall Update 1.2 and use only the base game version that is supported by your mod.
If you want to battle or trade locally with a friend, both 3DS systems must be running the exact same version of the game. If they have Update 1.2 and you are on 1.0, the systems will fail to connect.
: The update requires approximately 539 Blocks of space on your SD card. Pokemon Ultra Moon- Update 1.2 3DS -WORLD- CIA ...
Version 1.2 of Pokemon Ultra Moon was a critical patch. It fixed the infamous "Battle Bug" where moves would fail inexplicably in specific scenarios, and it smoothed out the connectivity for the Festival Plaza. If you wanted to play competitively or trade online (back when the servers hummed with life), you needed this update.
Released in November 2017, Pokémon Ultra Moon (alongside Pokémon Ultra Sun ) represented the culmination of the Pokémon franchise on the Nintendo 3DS. As enhanced versions of the original Sun & Moon , they introduced an alternate storyline, the terrifying Ultra Necrozma battle, the Team Rainbow Rocket episode, and a roster of over 400 catchable Pokémon. : Some modded builds are not designed to
The primary focus of update 1.2 was resolving issues that caused the game to freeze or crash during specific battle scenarios: Move Glitches: Fixed a bug where moves like Forest's Curse Power Trick String Shot could cause the game to freeze during Live Competitions. Ion Deluge: Resolved an issue where the move Ion Deluge was no longer functioning correctly. Competitive Play:
This is a critical update for players who remember trading and battling online. As of was officially discontinued. Consequently, the Version 1.2 update no longer serves its primary purpose of enabling online access. However, it remains essential for stability and compatibility , especially for those using the 1.2 CIA as a base for ROM hacks or to fix the lingering in-game bugs. If you want to battle or trade locally
While Game Freak was historically brief with their official patch notes, the 1.2 update addressed several critical community-documented issues:
Follow these steps to apply the Update 1.2 patch to your console:
For the uninitiated: A file is the installation format for 3DS software on custom firmware. Unlike a .3DS file (used for flashcards or Citra emulator), a .CIA installs the update directly to your console’s SD card, merging it with the base game.