XA123a said it well "Fortunately, you did not buy it." I have the latest V2 versions of everything in Xaircraft including the gps and for me at least is, it has never been good. In fact, I just put my X-650 V-8 in retirement due to multiple on going dissapointment, crashes out of the blue for no apparent reason etc. I can hover for 10 minutes in gps mode and all will be ok but for the fact it wont hold position very well and suddenly it will flip its self over and crash normally badly depending on altitude. I have spen a small fortune on rebuilding it over and over and over and all I got from that was to be good at fixing it.
You could spend $400.00 and get the Naza controller with gps and run that in the Xaircraft item you have and you will be happy Im sure. The Xaircraft set up again "for me" just did not live up to my expectations, and hitting the switch for "return to home" on more than one occasion resulted in its destruction. I just bought a DJI F-550 hexa copter with the WKM "Wookong" electronics and at last all is very good, and a lot of fun now. And fun was all I was looking for. :nevreness: