I can't really speak about firmware upgrades as my units hasn't need one in ages but regarding spindowns, this is my advice:
- Make sure that no other apps are open other than the Wahoo App on your phone- this includes closing training apps (on phone/pc/tablet etc) that could be communicating with your trainer.
- Try disconnect any other Bluetooth devices which your phone is connected to.
- Open the Wahoo App (make sure it's the latest version), select your trainer and then try perform a spindown.
If this fails, call Sean at Ikhambi (087 654 1940)