Your 3DS must have Luma3DS and FBI installed.
You must source the Pokémon Ultra Sun Update 1.2 CIA file. Make sure the region of the update file (USA, EUR, or JPN) matches the region of your base game, or the patch will fail to apply. Step-by-Step FBI Installation Guide
: Using FBI, navigate to the SD card, select the Pokémon Ultra Sun Update 12 CIA file, and choose to install it. The process is usually straightforward; follow on-screen instructions. pokemon ultra sun update 12 cia install
: Download the Version 1.2 Update CIA for Pokémon Ultra Sun. Ensure the region of the update matches your game's region (e.g., USA update for USA game).
You need the FBI homebrew application installed on your home menu to manage and install CIA files. Your 3DS must have Luma3DS and FBI installed
Before starting the installation process, ensure your system is properly set up.
While the update file itself is relatively small compared to the full game, you need space in your Nintendo 3DS/ folder. Step-by-Step FBI Installation Guide : Using FBI, navigate
Installing Pokémon Ultra Sun Update 12 via a CIA file offers an alternative method for players to access the latest version of the game, especially for those who may have missed it through official channels or are looking for a more customized gaming experience. However, it's essential to proceed with caution, respecting the intellectual property rights of game developers and adhering to safety guidelines to protect your console and data. As Pokémon continues to evolve, staying updated with the latest games and patches ensures the best possible gaming experience.
Community forums have documented specific working CIA sources:
Installing a USA update on a EUR base game makes the update invisible.