In March 2024, the original Citra team (alongside Yuzu) settled a lawsuit with Nintendo and shut down. However, (like PabloMK7’s Citra and Lime3DS) continue development. These forks still require aes-keys.txt exactly as before.
The file must be a text file containing hexadecimal keys, typically generated from a dumpkeys.gm9 script. aes-keys.txt citra