Okay, Ive read thousands of posts today and I want to upgrade to 4.1 (not the latest as I want untethered), and unlock. I have the baseband 5.12 at the mo..but not fussed going to 6.... if its easier. I'm using windows. So, how do I do it? I've tried using redsn0w and got into dfu mode, but then itunes wouldn't recognise my custom firmware which I downloaded online. I've got all my shsh's and stuff.. Soooooo confused!! help?