hi there i have an unlocked & jailbroken 2g phone with 1.1.2 (used iphonesimfree) and want to upgrade to the latest version. i'm not the most technical and have searched & hunted through loads of threads but am non the wiser and if anything, slightly more confused than when i started. i've downloaded quickpwn but it says my firmware is not supported. please can someone tell me what i need to do. thanks in advance. phil.