If the update broke your Pixel Watch 1 or 2 you can reset it.

Google does offer a couple of potential fixes for the blank screen issue, but one involves resetting your watch to factory settings.

Google released the initial Wear OS 5 software update for older Pixel Watch models back at the end of September, but the update resulted in some devices getting a black screen. The update was pulled shortly after and while Google has now said the update is still coming, it might be a little later than you would have hoped.