The One UI Watch 4.5 beta programme for the Galaxy Watch4 series was launched by Samsung a few months ago, and it appears that testing went well because the company recently announced the beta program's closure on its community forums. As a result, the Korean conglomerate won't be releasing any more beta builds for the Watch4 series. Although Samsung made no announcements on the availability of the One UI Watch 4.5 stable update, some customers have already begun to receive it on their Galaxy Watch4.
The upgrade weighs in at roughly 95MB and has firmware version R870XXU1GVH2/R870OXM1GVH2. You can manually check for the update on your Galaxy Watch4 if you haven't yet received it by going to its Galaxy Wearable page. > Galaxy Watch4 > Watch4 settings > Watch software update menu.
