Spent 6 hours last night trying to get my iOS5 Beta 7 onto the GM/production ipsw. Everything I tried failed. If I just tried to restore - I got a message that iTunes cannot find the necessary resources. If I tried to put in DFU and shift restore I got errors, 21, 11, 1611, 1604 etc. If I tried to downgrade to 4.3.5 (thinking I could then upgrade to production iOS5) I got one of the above errors. Even trying to use TinyUmbrella and run the TSS Server didn't work. Host file is intact as it should be. The only final thing I could come up with is that its because I have Windows 8 Developer Preview installed. Can anyone confirm restoring in iTunes on Windows 8 does not work? Im tearing my hair out because my beta expires on the 20th and really wanna get this thing on the production release and get my content back on it. Help anyone?