Ok, let me clear this up. I have this topic so I dont spill it out to people who dont want me spoiling the game for them. But if everyone is going to make a big deal of it, Ill tell you right here, right now. So if you want to know,BlaXun, keep your eyes open. It is not completely random. It can be controlled. The whole point of a style change is to adjust the style with your busting skills. Here\'s how it goes, but it only works with battle network 3...
Heat style: equip 3 atk +1 programs in your navicust and no other power up like charge +1, speed+1, or weapnlvl+1.
Aqua style: have 2 weapnlvl+1 on your navicust and no others.
wood style: have 3 speed+1 programs in your navicust and no others.
Elec style: have 3 charge+1 programs on your navicust and no others.
Try them, they work. I have tried it, my brother has tried it, and we both got the EXACT style and type that we wanted. I got woodbug, and my brother got heat bug. We were trying to get that, and because of my discovery, it worked. There, is everybody happy now?