I just received my forerunner 45 on yesterday morning. After initial setup I could wear for a couple of hours before it suddenly froze. The watch display is stuck on the Garmin logo. No activity is recorded anymore. Any idea how to unblock it? I've already tried to sync with my mobile (no change) and to sync with Win10 (no change). With Garmin Express I saw an attempt to update firmware from 2.30 to 2.50 but I don't think it really succeeded.