So I've followed the handy guides stickied to the top of the forum here, yet for some reason I am having issues getting itunes to accept the update. I'm using PwnageTool 4.1.2 to try to update to JB 4.1, but when I get to the step where I'm supposed to restore it in itunes, it tells me "The iPhone "iPhone" could not be restored. This device isn't eligible for the requested build." Is there something I'm missing here? I've tried loading both the custom 4.1 and the official 4.1 and it gives me the same results either way.