Enable Display Mirroring for iPad 1

This is how to use the plutil utility


#back up K48AP.plist
cp -p /System/Library/CoreServices/SpringBoard.app/K48AP.plist /System/Library/CoreServices/SpringBoard.app/K48AP.plist.bak
#patch
plutil -key capabilities -key display-mirroring -yes /System/Library/CoreServices/SpringBoard.app/K48AP.plist
#check
plutil -key capabilities /System/Library/CoreServices/SpringBoard.app/K48AP.plist