If you are using a 3DS with custom firmware (CFW), follow these steps to ensure the update applies correctly: Preparation: update file in the folder on your 3DS SD card. Installation Order: Always install the base game CIA first , then the update CIA Using FBI: FBI Homebrew application. Navigate to Select your update CIA file and choose "Install and delete CIA" to save space. Verification:
Ensure you have at least 150-200 blocks free on your SD card. ⚠️ Important Considerations Monster Hunter 4G 3DS -JPN- -Update- CIA