If you are a member of the Nintendo 3DS homebrew community, you have likely encountered two primary file formats: and .cia . While both hold game data, they serve very different purposes. To get the most out of a custom firmware (CFW) setup like Luma3DS, knowing how to use a .3ds to .cia converter is an essential skill. Understanding the Formats: .3ds vs. .cia

: Ensure your SD card has enough free space. A conversion creates a second file, meaning you temporarily need double the space of the game size (one for the .3ds and one for the .cia).

: Press A on the file to open the options menu.

: Place your .3ds file into the /gm9/out/ or /gm9/in/ folder on your 3DS SD card.