Was having trouble getting the required 6+ satellites and home lock flashing green during the power up sequence. It would just flash yellow and red. I did the compass dance 3 times and the light would turn green, but it would just stay green...not flashing...just solid green. I was not comfortable with the situation so I did not even attempt to fly. Emailed my retailer and after the second email with still no change he suggested I do the following: 1. Do a normal power cycle 2. Hold my cel phone directly over the compass (in my case it is within the shell in the center) for 30 seconds or so. After about 30-40 seconds the red and yellow flashing changed to the red and green flashing. It worked!! Took it outside, did the compass dance and everything was normal. Pretty awesome I think. Disclaimer: although this worked for me, it may not for you, so don't hold me responsible if something goes awry in your situation **Also note that my Phantom has the Naza v2 controller + GPS with the compass integrated into the GPS antenna under the shell. Consequently, there are two wires that protrude out of the front leg openings on my craft, as opposed to the standard compass that is fastened to the rear leg.