my 955 solar watch updated to firmware 18.27
since the update, my heart rate has been about 20bpm too low. (shows up at 110-120 on a zone 3 run, where it should be ~140)
when i took my watch off, it also looks like one of the green LED's on the back is a lot dimmer than before.
unsure yet if this is just con-incidence. if the LED failing, and that causing the issue with heart rate reading? or is it the firmware update? or both?
but i'm sure the two green LED's on the back used to be the same brightness. but now one of them is SUPER dim.
