iPhone 4S Wont Restore - (Error -1)

I have : :apple: A MacBook pro 13.3" 2011 model (OSX Lion)
:apple: iPhone 4S 16GB Black - On T-Mobile (EE)
:apple: The latest version of iTunes
Hi
I had tried restoring my iPhone 4S 16GB today because of a signal issue.
When I had clicked all the settings for restoring, I waited for it to restore.
I get an error message quoting "(-1)" Shown Below
I press the "More Information" button, which takes me to this link - "http://support.apple.com/kb/TS1275?viewlocale=en_US&locale=en_UK"
I read all the troubleshooting instructions and none of them have worked.
I have checked out other forums and they haven't been of any use!
Thanks
Ol'

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