So I was one of the lucky ones that never upgraded to 3.1.3.. im still on 3.1.2 software and its jailbroken, but never unlocked. I want to upgrade to 4.0 jailbroken version with the new pwnage tool, and it seems like im in the category that can do so since im on 3.1.2 still I downloaded the pwnage tool and it requested I obtain the actual file, this is where I'm stuck.. how do I get the 4.0 software.. I dont trust any of these internet web searches.. do I download it from itunes and unplug my phone? What do I do, Im afraid to take a guess and brick my phone somewhere in the process losing my stuff altogether. thanks, I guess this is a stupid question but in summary, how do I get the iOS4 software without accidentally upgrading to an unjailbroken version screwing everything up?