PS. Now I think it DID work! After my attempt, I checked the Config menu. Ity says uC 1.78 / FW REV 5 The Utility says 1.78 IS the current MCU version. So I think it worked, but the "waiting" statement is misleading and the Utility gave me no confirmation of success. Comments from OSX users welcome. Meanwhile, back to the shack! Windy