1. From the HOME Menu, select the Nintendo eShop icon on your 3DS
2. Select ""Menu"" in top left of the screen
3. Select "Settings/Other"
4. Tap the box that says, ""Redeem Download Code""
5. Enter your unique 16-character download code displayed on the ‘Orders’ page of your CDKeys account or on the link of your confirmation email if you had purchased as a guest.