Has anyone else with the upgrade noticed this?

Brad

Yep! The winds aloft calculation function is inop on my 530W as
well. I had a demo from a Garmin rep prior to the upgrade where he
demonstrated the 530W interface with an ADC to provide winds in real-
time, but I am coming to the conclusion that Garmin forgot to leave
the function available if you DON'T have an ADC onboard...