I have a new RTL515. With Garmin Express 7.0.0.0 on macOS it reports that I have software version 3.20. Is this the latest version available? I ask because it sound like there are newer firmware updates for older devices.
I'm trying to figure out an issue where I can't change the light mode from my Edge 530. Every time I select a setting like 'daytime flash' the light turns off. When I press the button on top of the radar the mode changes and the current mode on the Edge also updates. The Edge is up to date with version 5.5.