I can get the update, it tries to install, but never completes installation. It varies from failing to validate, to just restarting some way through the update and being back on 4.3.1. I’ve restarted, uninstalled and reinstalled the beta profile, in-paired and re-paired. It just doesn’t install. I’m on a Series 2. Will be good to know if any Series 2 owners have had success.