After updating my course over the weekend, the V3 took quite a while to find the satellites. I figured it would, so I turned it on quite early and had to use pause. I've always had to "confirm" both Pause and Resume using the top right button next to the check mark.
That's to confirm it but to actually get to the pause "menu" you have to hold the top left button for 2+ seconds, just like SS says. Mine does not respond to that now.