Because you used an "Updated" CIA, the version number on the title screen will read . You do not need to download a separate update from the eShop.
Encountering a black screen? Here are the fixes: pokemon x 15 cia updated
The base game is ~1.7 GB (13,788 blocks), while the standalone update CIA is significantly smaller, approximately (similar to Pokémon Y's 30.25 MiB update). Required For: Because you used an "Updated" CIA, the version
: Some ROM hacks or randomizers require the game to stay at Version 1.0; check your specific mod requirements before updating. Because you used an "Updated" CIA
Addresses various bugs to provide a smoother gaming experience and fixes specific issues that caused disconnects during random matchups.