For several months he did not actively use 945 during cardio and strength training. When running, I always use a chest sensor. But now I noticed that the optical sensor shows incorrect data during average activity. When I am at rest, everything is fine. But while walking, the pulse on the optical sensor is 90-110, although in fact 60-80. During stretching, warming up or power optical shows also + 30-50 strokes. You put on a chest and the pulse immediately falls on the same 30-50 beats.
Firmware 4.40. Before that, everything was fine in the spring or winter ...
Is it again a firmware problem, which is already three months old (LOL) or is it a technical problem? I reset to factory settings, it did not help.
