Nintendo released several patches for Pokémon X/Y. The final official update is , released in late 2014. This patch fixed:

: It ensures the game remains stable when transferring beloved Pokémon—like an original starter Greninja—through Pokémon Bank and eventually to modern titles like Pokémon Legends: Z-A

For users running on their 3DS or playing on emulators like Citra, the CIA format is the gold standard. Unlike standard ROMs (.3DS files), a CIA installs directly to your system’s home menu, appearing just like a legitimate digital purchase.

is a fan-made designation for a modded update that includes: