DEVO7 reset

I am trying to get my new F450 NAZA flying. I am having 1 problem I hope others here can help with. I have a DEVO 7 transmitter and wish to reset the transmitter to factory how do I do this?
 

Well, after waiting here for awhile, I decided to send the DEVO7 back to hongKong for a reset. They are charging me $52.00 + shipping.
 

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