"not eligible for build" is the message itunes (10.6.3) gives me. I've searched many forums and tried much, but no luck yet. I've flushed my DNS cache, ensured my hosts file only has # 18.104.22.168 gs.apple.com, (even tried deleting all apple references), and reinstalled itunes. My other iphone4 is using 6.1.3 and it all shows up in itunes. Any suggestions gratefully received.