This has plagued me for over a day now. I've googled all over the place to no avail. When I try to upgrade from 1.1.5 to 2.1 or even just 2.0.2, i get error 5 when i try to restore and update to it. This only seems to occur when im trying to use firmware files external from itunes, i.e. not updating through the 'update' button in itunes, but instead using a .ipsw file on my computer. I have tried stopping and starting the apple mobile device service. I have tried downgrading itunes to 7.5 and back. I have tried different firmwares, 2.1.1 or whatever it is and 2.0.2 - none install, but 1.1.5 will through itunes I have tried DFU mode - this gives the most results, as i dont get error 5 anymore, but instead i get error 1. Please Register or Log in to view images please help!