I myself have tried calibrating multiple times with unpredictable results, only had it about a month flown it 7x , 2 successful flights , 1 in desert could not handle the wind I was ok with it , the dj air2 power thru the wind. another time keep getting magnetic error an could not fly , I was on an open farm field! next day it hover steady on a park hmmm but could fly as it was prohibited .
Today it drifted into a wall , swapped props same results went up briefly hovered an than drifted again into a tree , I have 12 satellites so should hover , im very frustrated an advice will be highly appreciated.