Official 3DS games and updates are encrypted to prevent unauthorized copying. “Decrypted” means someone has removed or bypassed that encryption. This is done primarily for:
Pokémon X (released 2013) had several post-launch patches. Version 1.5 was a notable update that fixed bugs, adjusted online functionality, and addressed exploits related to the Lumiose City save glitch. It was officially distributed via the Nintendo eShop. Without the update, some game features (like online battles and trading) won’t work correctly. pokemon x update 15 decrypted 3ds eur usa extra quality