: You must use the Sky3DS DiskWriter tool on a PC to "flash" the ROM onto the microSD card. It cannot simply be copied and pasted.
involves specific setup steps tailored to these older devices. The game takes up approximately on an SD card. Setting Up the ROM Gateway 3DS (Red Card) Sonic Lost World 3DS ROM (EUR/USA) (Gateway/Sky...
: Launch Gateway mode from the system menu. Once in, press Select to bring up the game selection menu. : You must use the Sky3DS DiskWriter tool