iTunes Error

[iPhone4user]

Hi I am having problems restoring my iPhone 4 with PwnageTool after it creates custom firmware and i put it in DFU mode and click alt + restore in iTunes and select iPhone3,1_4.3.1_8G4_Custom_Restore.ipsw i get a message saying The iPhone "iPhone" cannot be restored at this time because the iPhone software update server could not be contacted or it is temporarily unavailable please help.

 

[Gregoris]

Sounds like there is a problem on the apple server, just try again later maybe in a few hours