This update is not like the Ultra Sun/Ultra Moon updates that added new event content. It is purely a stability and bug-fix patch for Pokémon X (and its counterpart, Pokémon Y v1.5).
: Updating the game's network protocols to allow players to continue using the Player Search System (PSS), Wonder Trade, and the Global Trade Station (GTS). pokemon x update 15 cia top
In the context of the 3DS, a (CTR Importable Archive) file is an installable package format used by modded consoles or emulators like Citra. How to Update Pokémon X and Pokémon Y | Nintendo Support This update is not like the Ultra Sun/Ultra
By securing the correct file (USA region, v1.5) and installing it via FBI, you future-proof your Kalos adventure. In the context of the 3DS, a (CTR
If you are looking for a specific or installation guide for a custom firmware setup, let me know: Are you using a standard 3DS or an emulator like Citra? Do you need help with FBI installation steps?