For those using the Citra emulator or manual save editing, "decrypted" files are a necessity. Standard 3DS files (CIA or 3DS formats) are often encrypted by the console's native security, and MH4U adds its own additional layer of encryption on save data. 1. Decrypting the Game (CIA Files)
For those on physical hardware, the update is typically found on the eShop (if still accessible). If you are using Citra: Monster Hunter 4 Ultimate- Update 1.1 -Decrypte...
Note: This information is for educational and archival purposes. Always support Capcom by owning an original copy of MH4U. For those using the Citra emulator or manual