I updated today, no problems, about 5 mins in total and got the confirmation 20 green flashes afterwards. I updated vis the Garmin App and the app still says a firmware update is available as does Garmin Connect on my mac, even though its says current firmware 3.80, new firmware available 3.80 ???? Also My Edge 820 confirms that the installed firmware in my V3's is 3.80 and no software update is available.
Bit confused. 20 mile test ride, no problems and the readings seem accurate etc.