I'm very frustrated - I'm not getting any satellites and have now started backtracking on everything I have done so far to see where I went wrong. I have calibrated the IMU, reset the compass (both a few times) and made sure there's no interference etc. All I can think is that something went wrong when I installed the Phantom upgrade kit (http://youtu.be/EU-9xW3JJ1Y) and then after that the Zenmuse H3-2D and PMU V2 (http://youtu.be/3I9es5y7Mrw). The problem I think is that the second video, for the Zenmuse installation, is done on the standard centre board the Phantom ships with and not on the centre board of the upgrade kit (first video) which is different. When I power up I get 3 red and 1 green, I know I'm not supposed to try to fly, but out of pure frustration I did, an doll it does is just flip over. I'm hoping there's someone out there that's had a similar issue or can send me a link of a how-to video for the Zenmuse on the upgraded centre board.