Now for the last steps to set-up your GW3DS to play 3DS ROMs. Assuming you have already downloaded the
Win32 Disk Imager program, the next step is to navigate to your 3DS ROM collection. The 3DS ROMs have a file extension of .3DS. With the newest GW3DS update you can now flash any 3DS rom from any region onto the microSD card and have it play on any region 3DS system. With the microSD card plugged into your computer, start up the Win32 Disk Imager. This program is recommended to write the 3DS ROM to the microSD card. Once Win32 Disk Imager is loaded, be sure to check that your microSD card drive letter is selected, if it is not you may end up writing the ROM to another device.