New update data (Version 1.2) for Pokémon X and Pokémon Y has been released in Nintendo eShop and replaces Version 1.1. This new version contains the fixes in both versions. All customers who own Pokémon X or Pokémon Y should download this update data, even if they have already downloaded Version 1.1.
Ver. 1.2 (13.12.2013)
Important notes: It is necessary to download this update to access Pokémon X and Pokémon Y features which require the Internet after 13th December 2013.
To download this update from Nintendo eShop, you need to have the most recent version of the Nintendo 3DS system software version installed.
How to access Update Data: Please follow the instructions here: Notification About Pokémon X and Pokémon Y Update Data. The new version will show Ver. 1.2 (see screenshot below).