Hi Everyone I have a Phantom 2 Vision I've recently upgraded all firmware on the phantom as well as the remote and changed it to Nazza in order to activate the IOC then did a recalibration. Everything seems to work except that when I tested it out in my apartment (a somewhat controlled environment) it automatically wants to fly upwards. Both S1 and S2 are all the way up. Initially when I turn it on it goes through the light routine then blinks one green and 3 red meaning its in gps mode and no satellites. Next I flew it off the ground a little and landed it right away after which (not touching the levers anymore) I could hear the rotors spinning faster then the phantom lifts off the ground on its own and I have to force it back down with the control otherwise it will keeps forcing upwards. This goes on for about 1 minute and sometimes the motors will cut out. Please advise! I've lost all confidence to fly it outside. Thanks in advance!