This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Dropouts HRM Pro firmware 8.10

Since updating my HRM Pro to 8.10, I am now very regularly (every run - multiple times) getting HR dropping to low zone 1 even though I'm running tempo or threshold. After a few minutes it usually picks up the right rhythm, but means the HR data is garbage.

Anyone else seeing this unreliability since the firmware update? It was absolutely spot on before!