If you’ve updated f/w and Info still says it’s the prior f/w, you probably need to cycle the power again and restart RT. I’ve had to cycle power, disconnect/reconnect USB and restart RT as many as 3 times to get Info updated. There must be an order to doing the restart after f/w update that I’ve missed or possibly I don’t leave the power off long enough… dunno.
I vaguely recall something about re-running the calibration… back in May last year? Tried to find what I thought I remembered but no joy. Try searching for a fan calibration post from @jacob - I think that’s probably who would have talked about it.