Hi, I have a iphone 3gs in os 3.0.1. with baseband in 04.26.08. It is jailbreak (with redsn0w)& unlock (with ultrasn0w). Many apps will not run on 3.0.1 anymore. I would like to upgrade to 3.1.X firmware without changing the jailbreak/unlock status. What is the best way to approach this? (I am using window 7)Thank you for helping me out.