My phantom 1 ran fine out of the box. Then I let it sit for a year without use. Last week I upgraded the firmware to 4.02 and tried to fly it. After lifting off it goes into a series of violent pitch and yaw maneuvers, round and round. Is this called the toilet bowl effect? I can provide video if you want... How to fix? I've done basic and advanced calibration w no result. I suspect maybe the stick calibration is off, but have not found usable documentation specifically on how to calibrate the sticks. My controller does not have a USB port (...not that I have found anyway). (Other articles on toilet bowl effect point to electronic interference. The lights all look ok on the bird, so apparently it thinks the compass is ok.) Is it stick calibration? If so, how to calibrate? Is it something else?