Some features have been removed in the english release: Satellite Server Brothers, Noise Kaizou Gear (NKG) and Rezon Cards. The only way to access them is by using your english save file with the japanese game. Unlock them in the japanese game, save, then go back to the english game and voila.
But, in the japanese version of the game there was a filter in WIFI random battles, where you could choose if you wanted to battle using NKG or not. Since NKG is not available in the english game that option is not available anymore for WIFI battles and you'll automatically find people who are not using NKG. Now my question is: "Is it possibly to hack something in the game so that we can ignore the automatic disabling of NKG and instead find people who are using it or not over random WIFI?
P.S. NKG and all the features mentioned above work when battling againts Battle Mates and Brothers.