Thanks Johnno and Robone. Actually, ZeroUAV has been trying to help out. Peter, the support guy has suggested a number of things. I think part of the problem in troubleshooting this is the language barrier. Peter does pretty well with English - I, on the other hand, don't do any Chinese! I have been chatting and sending emials and videos to show what is going on. But I am not sure I have gotten through. Though, today I received a fairly detailed email with a number of things to try. I will give that a shot and see what happens. As robone mentioned, why not just go back to previous FW. Well, I can't find it on the download site and every time I bring it up with Zero, they say it wouldn't matter. ????? So today, I will reload FW (11/28), and re calibrate everything from scratch and see what happens (this is probably the 4th time I have tried this from scratch). I will follow the email directions to a "T" and hopefully get this thing flying. I hope it is just something dumb that I am doing wrong! We'll see.