I too have the same problem. HRM not working. Bought the watch a few days ago. Brand new. Everything wrapped in plastic. Took the watch and HRM on and went out for ten minutes moving logs from a pile outside to a stack in the barn. Pulse never went under 200 bpm. Even if stacking logs can be exciting it's not that fun. Went inside. Upgraded firmware to 1.16. Same work - same pulse. After reading through this thread I realize that I'm holding an old version of a HRM, the one that doesn't work. I could of course go back with it to the shop where I bought it and have them contact you about replacement for me but it's gonna take longer time than doing it myself. Therefore, Geoffrey, to save time so I can start using the watch, I would like USGlobal to send me a functioning HRM. Please tell me where to email my adress, serialnumber what more you might need.