There are two primary ways to get this file. The first is highly recommended for its completeness.
For a portable setup, the location of your keys is slightly different from a standard installation. : Ensure your file is named exactly aes_keys.txt .
The Citra emulator allows you to play your favorite Nintendo 3DS games on modern hardware in high resolutions. However, setting it up often presents a major hurdle: the cryptographic barrier. To load retail games, Citra requires decryption keys.
Despite automation, aes_keys.txt remains supported as a legacy fallback. If Citra cannot find keys via boot9.bin , it will check the sysdata folder for the text file. This ensures that older setups or "portable" installations lacking a full BIOS dump can still function if the text file is present.
