while extracting file during restore, device disappear from iTunes; then error message "device cannot be found" pop up
After failing to update iphone OS, now iphone is in restore mode
Device Manager recognize USB is connected to iphone with Location: Location 0 (Apple Mobile device (recovery mode))
IPhone in "connect to itunes" screen
After connect to itunes, message "itunes has detected iphone in recovery mode. You must restore this iphone before it can be used with itunes." appear.
In Device -> iphone screen, after clicking "Restore" button, itunes status become "Extracting software..."
During extracting software process, iPhone change from "connect to itunes" screen to just "apple logo", then go back to "connect to itunes" screen; but at the same time device-iphone disappear from itunes; once itunes complete extracting software, error message comes out "The iphone "iphone" could not be restored. The device cannot be found"
Tried again few times with all USB device removed & turn off all the anti-virus software and all other non window / non-apple softwares; but same thing happened.
so now I'm stuck.... please help.
iPhone 4, iOS 4.3.3