The key sentence..."His training for the stunt included jungle survival and
mountain climbing courses, but apparently DID NOT INCLUDE instruction on use of
his GPS - in a telephone call he made during the flight, he stated that if
someone could just explain how to use his GPS he could relay his position to
rescuers."
...astonishing!...the critical thing he needed was the one (and only one) thing
he ignored...how to use his onboard GPS.