Required for online play, including Random Matchups, Online Competitions, and the Wonder Trade system.
Insert your SD card into your PC. Create a folder named cias on the root of the SD card.
: Downloading this update remains critical for anyone still attempting to access legacy local wireless features, as the game may block certain functions if it isn't patched to the latest version End of Era
This is the standard format for 3DS digital software. Users with Custom Firmware (CFW) use tools like to install these files directly to their SD card. Region Free (World):
host "Region Free" CIA versions of these updates for players with modified systems. Importance
: If your console is Japanese and the game is in English, you may need to use Luma Locale Emulation to force the correct language and region settings.