Jimmy Westenberg / Android Authority
TL;DR Samsung is now rolling out One UI 8 Watch to the Galaxy Watch 4.
The update carries build numbers R87OXXU1JYK4/R870OXM1JYK4.
This is likely the last major OS update for the Watch 4, which launched in 2021.
Samsung has started rolling out the One UI 8 Watch update for the Galaxy Watch 4, marking what is very likely the smartwatch’s last major OS upgrade.
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The update, first spotted by reliable tipster Tarun Vats on X, is currently live only in South Korea, carrying build numbers R87OXXU1JYK4/R870OXM1JYK4. Samsung can be expected to expand the rollout to more regions, including the US, in the coming weeks.
Tarun Vats
One UI 8 Watch is a significant update for the aging Galaxy Watch 4 because it launched all the way back in 2021. Samsung had promised four years of major OS updates covering both Wear OS and One UI Watch for the wearable. That means this is almost certainly the final platform upgrade for Samsung’s first smartwatches to run the new Wear OS, the one co-developed by Google and Samsung.
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