C:\Users\ \AppData\Roaming\Citra\sysdata\ Android: Internal memory/citra-emu/sysdata/ macOS: ~/Library/Application Support/Citra/sysdata/
aes-keys.txt is essentially the "skeleton key" for the emulator, a program designed to play Nintendo 3DS games on PC or mobile devices. What is aes-keys.txt? aes-keys.txt citra
Even with aes-keys.txt in the right folder, you may encounter issues. Here are the most common: aes-keys.txt citra