Hi guys! I have a problem with a Garmin 520 Plus, the device communicates with the pulse belt sensor but does not show my pulse value on the display. I checked the pulse belt on another 520 and it is 100% functional. I guess it's a software problem. I reset the device and it still didn't work. I managed to downgrade to the version, but it still didn't work. It doesn't work with 5.70 or 5.40. I think a larger area of memory should be rewritten, but I don't know where to find firmware or how to write it. Have you had any problems with this? Thank you.
