: Enhanced data-check functions to detect and prevent unauthorized data manipulation in competitive play. If a player encounters someone attempting to manipulate data, they are now automatically disconnected without the match counting toward their rating.
The official for Pokémon X (and Pokémon Y ) was released on April 22, 2015. While officially described as containing "various bugs fixes" to improve the gaming experience, further details from Nintendo Support and the Pokémon Global Link specify several key changes: Patch Highlights Pokemon X: Update 1.5 [Decrypted] 3DS (EUR/USA)...
: Disabled the display of Pokémon nicknames during online battles (reverting a temporary change from earlier that month), meaning only the standard species name is now shown to opponents. General Bug Fixes : : Enhanced data-check functions to detect and prevent
Fixed a glitch preventing Vivillon's menu image from appearing correctly in the Friend Safari. Technical Context : This update is required to access any
Fixed Poké Ball animations (e.g., Great Ball, Luxury Ball) when sending out a Pokémon first in battle.
: This update is required to access any internet-dependent features, including the Global Trade Station (GTS) and online tournaments.
: The update data is stored on the 3DS SD card rather than the game cartridge itself. How to Update Pokémon X and Pokémon Y | Nintendo Support