Shane Miller 🦙 on Twitter: "Garmin Edge 820 firmware 11.10 allows alert tone selection for the Varia Radar! No more jingle bells around town. Now for the others to get this update
Garmin releases Connect IQ for Edge 520 & Edge 1000 | DC Rainmaker
Garmin Edge 520 - Checking for Firmware Updates - YouTube
How to install bike maps on the Garmin Edge 520 - OneManEngine