After the release of Pokémon Ultra Sun/Ultra Moon in November 2017, Game Freak pushed only two official patches:
For those utilizing custom firmware (CFW) and file formats like , it is generally recommended to download the update directly from the Nintendo eShop to avoid common installation errors or "fake ticket" issues associated with manually installing update CIAs. In many cases, Pokémon titles share the same title ID across different regions, allowing updates to be somewhat universal, but a matching region update is always safest to ensure compatibility. Pokemon Ultra Sun- Update 1.2 3DS -WORLD- CIA -...
The update 1.2 for Pokémon Ultra Sun on the Nintendo 3DS aims to improve the gaming experience by fixing various bugs and enhancing overall stability. This patch is part of Nintendo's ongoing support to ensure that players have the best possible experience with their games. After the release of Pokémon Ultra Sun/Ultra Moon
Resolved an issue where the move Ion Deluge would fail to function entirely. This patch is part of Nintendo's ongoing support
The update occupied of storage on the 3DS SD card. It was—and remains—mandatory for accessing any of the game's online features, such as the Global Trade System (GTS) , Wonder Trade , or Festival Plaza battles.