Originally Posted by T J Gilbert
I've been at the point you are suggesting before.
I understand that I could easily take the working Naza, put it on the F550 frame, and see if everything works.
And I suspect it would.
Yes, that would prove that the non-working Naza is the culprit.
But (and this is a BIG BUT) I might be sacrificing the working Naza to some driver flaws/errors that only a coder can deal with.
And I still suspect that I have two perfectly good Nazas and there is some driver loading/sharing error looming here.
The quick test is to replace the Naza controller #1 (in the F450) with the Naza controller #2 (from the F550) and see if you can connect to the PC. It's highly unlikely that this will hurt anything, but since you seem uncomfortable with this just send it back to Robert.
If your F450 connects fine to your PC then you can't have a driver loading error as the driver and software are the same for the F550, correct?