I managed to install watchOS 2 without having registered my Watch's UDID, but as it's part of the instructions for installing watchOS betas I thought I'd better do it now in case beta 2 bricks my Watch or something.However, the Watch isn't appearing in Xcode. I've tried both the latest public release and Xcode 7 beta, but there's "no paired devices" section under my iPhone when I connect it to Xcode and look in the Devices window.