: Ensure your 3DS is running custom firmware (CFW) like Luma3DS and has the GodMode9 tool installed.

: Boot into GodMode9, press HOME , select Scripts , and run the dump script.

Note: If the sysdata folder does not exist, you must create it manually. Troubleshooting Common Issues

: If dumping keys is too technical, many users prefer using decrypted ROMs (often found on sites like Myrient), which bypass the need for an aes_keys.txt file entirely. Reddit·r/Roms

The official and safest method to get valid keys is to dump them directly from your own .

Citra uses keys to perform real-time decryption of Nintendo 3DS software. These keys are hardware-specific secrets developed by Nintendo and are not legally allowed to be distributed with the emulator software.