How do you get bass cross on Megaman Battle Network 5 Double Team DS

To get bass cross there are three theories. The first is untested, the second is fully tested, and the third proven. The first way is to get the bass icon by beating bass in nebula area 6 on 1 file, then starting another. The second way is to beat bass on a GBA version of battle network 5, slot it into the ds, and start a file on double team ds. The third way is to get the Bass symbol in a GBA file, and have it in the DS when you start a double team game.