The heart rate monitor of my partner’s garmin edge 530 is working fine till he get up to 170ppm and then it just go’s blank sometimes it comes back after a few minutes but not always. This started happening after he conected his edge with the mobile app.
We first changed the battery on the heart rate monitor.
Then I bought him a new heart rate monitor it keep happening no matter what we try.
We have checked all the firmwear and lates software as well. How do I un install the software and reinstal it.
Or how do one do a hard factory rest