Modded systems using custom firmware can bypass these locks, allowing "World" or "Region Free" versions of the update to be installed on any device regardless of its original territory. How to Update Pokémon X and Pokémon Y | Nintendo Support
For region-free play custom firmware, the only legal option is to buy a region-unlocked 3DS from third-party modders – but that still voids warranties. Pokemon X- Update 1.5 3DS -World- CIA -Region F...