Hey guys, I've got a question. I recently got an iPhone 3GS 32gb from a friend which was previously jailbroken on 4.0. Now that I've got it, I want to jailbrake and unlock it to 4.2.1. Keep in mind that this isn't new to me, I had an iPhone 2G before which I constantly jailbroke/unlocked. So, I followed this tutorial here http://iclarified.com/entry/index.php?enid=13931 and created the custom firmware. When I put the phone into DFU mode and went into iTunes to custom restore it, I was given this message: "The iPhone could not be restored. The device isn't eligible for the requested build." Could anyone tell me what this means and how I can go about it?