Find my iPhone in settings is locked so I can't disable it?

It can't be turn on/off in my iphone. It's locked so I can't restore.

Put the device in DFU mode…

* Look on youtube how to do it (it's simple; very easy but i forgot the second for each button)
This will make your itunes restore your device ( it will say error need to restore)
Then simply download the new IOS 7 or whatever firmware your able to get and restore.