In Citra, you can install the update by going to File > Install CIA and selecting the decrypted .cia file.
The 1.1 update for Monster Hunter 4 Ultimate (MH4U) was released to address several technical issues and prepare the game for DLC. Approximately 170MB (44 blocks). Monster Hunter 4 Ultimate: Update 1.1 [Decrypte...
This update is mandatory to access online multiplayer and download Event Quests or DLC. In Citra, you can install the update by
Resolved an issue where players were unable to access the Elder Hall in certain conditions. This update is mandatory to access online multiplayer
When searching for "decrypted" update files, stick to reputable community hubs. Avoid sites that require you to download secondary "download managers" or executables, as these often contain malware.
Are you having trouble this specific update on an emulator, or
Ensure your update region (USA, EUR, JPN) matches your base game file for the update to apply correctly.