I have ( 3g 3.0 Jailbroken, Tmobile, Base = 04.26.08 ) I used Quickpwn for jailbreaking Now I want to jailbreak to 3.1.2. Plz advise best jailbreak prog, tutorial. Also what things I should be careful about. Few thing I'm worried about losing 1. My phone was AT&T now its Tmobile unlocked. 2. I would like to keep this baseband 04.26.08, frankly i dont know anything abt basebands but I get the feeling I should hold onto the older baseband as long as I can. 3. Tmobile carrier setting. It was hard to make these work on my phone for MMS and other stuff. I know how to set them up but it felt like I was shooting arrows in the dark, it was blind luck I got it to work 4. I would like to continue to be able to tether to my iphone.