Samsung rolled out the One UI 8 Watch update for the Galaxy Watch4 about two weeks ago, and it was initially only available in South Korea. Now, Samsung has expanded the update rollout to include the United States.
The One UI 8 Watch update currently targets the non-cellular version of the Galaxy Watch4, and comes with build number R860XXU1JYK4, including the October 2025 security update.
If you still haven’t received updates on your watch, you can check manually by going to the Settings menu > Software update via the Galaxy Wearable app.
