I just got my Phantom yesterday and I went through the process of upgrading the firmware and installing the default parameters like the instructions said. However when I tried to calibrate the compass before my first flight, I only got flashing yellow LEDs, indicating no connection with the transmitter. To make a long story short; I had to switch from PPM to D-bus to get it to work. It calibrated and seems to work just fine. I just wondered if everything (GPS, return home function), for example, will work like its supposed to in this mode. The gps seems to work fine and it hovers if I let go of both sticks; I just want to make sure everything is right before I get too far along. Thanks; Steve