A Nintendo 3DS/2DS console with Custom Firmware (CFW) , such as Luma3DS , installed.
: Downloading BIOS files from the internet is technically piracy. The "correct" way is to use a homebrewed 3DS to dump your own files. Nintendo 3ds Bios File Download
serves as the primary file browser for extracting internal system data. Citra Documentation Citra Wiki A Nintendo 3DS/2DS console with Custom Firmware (CFW)