Does someone know or have a link to the 3.1 firmware download, I want to downgrade from 3.3 to see if that resolves the problem of my Garmin Edge 705 not picking up HR, Cadence or Speed.
Suggest you contact Garmin Support---they may be able to solve issues without you having to `downgrade`; OR have you tried a reboot of teh 705 ? that may solve everything