As I was struggling with apparently un-successful firmware update 1.10.90 procedure for my P3P due to "not detected" modules 1700 and 1701 (VPS system), after several days of trying all known by-the-book methods, hardware check-ups and ridiculously helpless DJI tech sup service - the miracle happen overnight without reasonable explanation. Last Aircraft Status report demanded firmware upgrade, the next day all seems to be Normal and About page shows all firmware/software up to date. Didn't attempt to perform test hovering yet, must do all ritual calibration first and pull my parka off the closet (-20C outside) ... Go figure ...