Long time reader first time poster. Received my first DJI product, P4 today at the end of the the known world in Perth Australia. After all the firmware updates (each of which failed at least once during update) and the camera calibration I noticed that following the compass calibration I am still getting errors. Compass 2 refuses to calibrate and I get "Restart Aircraft" from bootup. I think I've got a lemon. Anyone seen this before? I found another guy on DJI forum with same problem and the DJI tech told him to try "tapping" the p4 as compass may have stuck???? Like wtf, it's worth $2k Australian lol