Still haven't gotten around to flying this thing......I've had it for over a month now! Long story as to why.... Anyways. Charged up the three batteries I have. Turned everything on and check what firmware I'm running. ( I had done a firmware update about 5 weeks ago, right after I got the unit.) APP = 2.6.0 AIRCRAFT = 1.6.40 RC = 1.5.70 The controller is telling me I need to do a firmware update. Advise??