Hi everyone, maybe someone has had a similar experience to what happened to me today. Something really weird. I was going to film over the water (7th time) and I placed my ph2 last version on a cement pier. Gopro was on, not recording, wifi gopro is always off. I flight by sight. I haven’t changed anything compared to previous flight. I noticed always immediately that the light was blinking red and yellow (this was my very first time). I don’t calibrate anymore my PH unless I change something important. This location was new but only 5 km away from previous location. So I recalibrated the PH 360° by orizzontal and vertical turn. All lights turned green. I placed it down again, and waited for the green lights and 2 series of fast blinking green. All was green and I waited an extra 30 seconds to be sure. The moment I took off (in GPS mode) I realized it did not look and was going on his own. Red and yellow were blinking again. I tried to recover but had a feeling that the directions was responding because were wrong. So I ignored the movement of the sticks and concetrated to bring my PH back (flying over water). I managed to catch it while flying by near me. I think I must have turned white. Just because I kept cool and had experience I was able to recover. A newbie would probably would have crashed. So I went home, connected to the pc and the message appeared “Gps not calibrated or magnetic field interference”. Strange also the IOC was off when normally it should be on. So now I made a reset and calibration at home. Wonder if any of you had the same issue. I’m 100% sure this is not satellite related. I tried to search in internet to see if there is some magnetic field issue at the moment (sun spots that create storm) and it appears there are some disturbances at the moment and will peak tomorrow in a minor storm. I doubt this was the cause. What is really disturbing was that after I calibrated everything was green and the moment I took off it just moved on it's own. I think I will make a test flight on a open field now.