Garmin CIRQA firmware 2.50: which heart rate bug does it fix?

Garmin has released CIRQA firmware 2.50, with a changelog that only says "improvements to OHR." Here's why that's more likely to fix the sensor's dropout bugs than the interval accuracy lag this site found in testing. Read the full post at Garmin CIRQA firmware 2.50: which heart rate bug does it fix? . Subscribe to the5krunner for detailed running tech reviews, sports science insights, and…