Turn off your 3DS, remove the SD card, and insert it into your computer.
Copy the extracted .cia file to a folder on your SD card (e.g., SD:/cias/ ). Install the Game: Insert the SD card back into your 3DS and turn it on. Open FBI (the standard 3DS installer app). Navigate to SD > cias . ACNL-USA-CIA-RF-Ziperto.rar
A common name associated with digital ROM/CIA repository sites. RAR: The compressed format that needs to be extracted. How to Use a CIA File (If you own the game) Turn off your 3DS, remove the SD card,