Sensors on Forerunner 955 not operational after update yesterday

Hi there, 

After the latest update the watch (Forerunner 955) does not show HR and steps anymore. Also, wrist HR light sensor is not functional. The challenge is that I have Durban 70.3 Ironman on Sunday and kind of need my watch to work properly. Does anyone else have this issue on this model. I have emailed garmin SA and called. The lady helping me was really nice and we did a hard reset but did not work. The only other option I still need to try is update via the PC with the recharge cable. Let me know if anyone is also experiencing this and has found a solution. Thank you so much

Jaco