3DS Bios eMu3Ds BIOS Web-Installer (557 kb)
To play Nintendo 3DS games on your PC you need the emulator, and you need a 3DS BIOS, put the BIOS map inside the map with the emulator. And you will be able to open .3ds roms with the emulator.
1 Download the BIOS.
2 Put the BIOS files in the same location as the emulator.
3 The emulator will now detect the BIOS files.
If the download won't unlock, Tweet, Like, Google+1 etc... then try to download again.