: The most reliable, legal, and safe path is to dump your own cartridge or eShop copy, then decrypt it using GodMode9. This ensures:

Open Citra and go to (or the menu in the bottom right on some versions). Select the downloaded .cia update file.

Citra requires updates to be in .CIA format to be installed. Even if your base game is a decrypted .3DS or .CCI file, you can install the update separately. : Ensure you have the Pokémon X v1.5 Update in .CIA format. Install via Citra : Open Citra.

Tap the in the top-right corner of the screen. Select Install CIA .