Ive downloaded the same IPSW file from a few different sources, including Apples servers and continue to get "firmware not compatible" errors. I know the IPSW file is correct and all I ever do is the manual restore (shift-select) method so I know how it all works. I wasnt having this issue with my iPhone 5 last week with the same computer and cable. Anyone else having this issue? Windows 7 machine and the newest iTunes software.