Last month I buy this iphone 4 and now when I try to perform any kind of task on this it displays an error message "this device isn't eligible for the requested build". I don’t know why this happen but whenever I try to perform an iphone 4 restore or any other upgrade task on it, this iphone gives such error message. At initial condition it happens when I try to perform an upgrade firmware from iOS4.1 to iOS4.3.3 using iTunes. Thanks for any suggestions.
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