I purchased an Edge 850 and transferred my SRAM sensors from my Edge 840. All the SRAM sensors as well as the Wahoo and Garmin HR sensors transferred fine, but the Garmin Varia 515 stays invisible to the Edge 850.
All firmware current (both on the 850 and the Varia 515). Garmin 840 powered off while trying to pair with the Varia 515.
What is it that I am missing in getting the 850 and the 515 to connect. The Varia 515 with the Edge 840 has been pretty rock solid.