My game boy advanced games ruby, sapphire, emerald, and fire red wont trade with each other. I even tried different game boy advances. I have beaten all my game boy advanced games and it still wont let me trade between them. And no I am not at the wireless center. And the cord works fine because I can still trade from my gold to my silver. And from yellow to red. And so on. Please someone that can fix this problem please respond. Many people seem to have this problem.