The aes_keys.txt may be outdated. Re-dump them from a recently updated 3DS.
Launch citra-qt.exe . Citra will recognize the user folder and store all data there. 3. Placing aes_keys.txt in Portable Mode To make aes_keys.txt work in portable mode: Navigate to your Citra portable folder. Go to: [Your-Portable-Folder]/user/sysdata/ . Place aes_keys.txt inside the sysdata folder . If the sysdata folder does not exist, create it manually. aeskeystxt citra portable
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For certain frontend setups (like RetroArch), the path may differ slightly, such as ../saves/Citra/sysdata/ . 4. Acquiring the Keys The aes_keys