Online Connectivity: You cannot use the Player Search System (PSS), Wonder Trade, or the Global Trade Station (GTS) without it.
If you are playing via an emulator like Citra, you cannot access the eShop directly. In this case, you need the update in a .cia file format. pokemon omega ruby update 14 link
Stability: The update fixes specific gameplay bugs that could occasionally cause the game to crash or behave unexpectedly. Online Connectivity: You cannot use the Player Search