My new Shark Evoline has the Sharktooth bluetooth fitted - and will not pair with my Zumo 660, giving the message "connection failed". I've had no problem sith other bluetooth helmets with the Zumo - has anyone seen this (and have an answer")
What software is your Zumo running, I had problems after installing the latest, no problems connecting to intaride intercom and iphone before update but not a chance after, reinstalled 3.9 and it worked fine. I have heard if you do a master reset on the Zumo this can cure some problems, (hold lower right of screen and keep holding while you switch on, you'll loose any personal data on the Zumo though, I think)