Converting files (cartridge dumps) into files (installable packages) is primarily done using
Decryption: Encrypted .3ds files cannot be converted directly without the proper decryption keys. GodMode9 is preferred because it can handle decryption "on-the-fly" using the console's internal hardware keys. .3ds to .cia converter
There are several ways to handle this conversion, depending on whether you prefer using your PC or doing it directly on your handheld. 1. GodMode9 (On-Console Method) Cause: This happens with old Gateway-style encrypted ROMs
Best for: Users who already have a modded 3DS.
Status: Actively maintained.
If your .3ds file is already on your SD card, you don’t need a PC. GodMode9 is a powerful file manager that runs on the 3DS itself. .3ds to .cia converter