I have a 3g, 2.2 firm iPhone. And wanna update. I read that blackrain (or something) is to jailbreak the ultrasnow for unlock. I have a gevey turbo sim card for tmobile. Is their a specific blackrain for 3.0 and 3.1? Or does blackrain satisfy either one? Once I install ultrasnow, do I have to use the gevey card? Or does it read the tmobile sim card straight through.? Also is costomize still crappy or is it fixed for 3.0.