Sooooo I did as you said, "Go to Gateway's website and download GW 3.7.1. Place the launcher.dat on your SD card. Back on your 3DS, insert the SD card back in, open the 3DS browser app, and go to go.gateway-3ds.com or go.gateway-3ds.com/old or reboot.ms/3ds (and select launcher.dat). You will be...