Samsung has begun rolling out the stable One UI 9 Watch update, built on Wear OS 7, for the Galaxy Watch 8 and Galaxy Watch 8 Classic. The release is the first major system upgrade for both smartwatches.
The update is currently available in South Korea, following roughly two and a half months of beta testing that began in August. It is reaching both beta participants and users who remained on the previous public software version.
For the Galaxy Watch 8, the stable firmware is identified as L320XXU2BZJ7 / L320OXM2BZJ7. The download is about 2GB for users upgrading from the prior stable build, includes the October 5, 2026 security patch, and the same build is also being distributed to the Galaxy Watch 8 Classic.
Samsung has not published a complete changelog for the stable release. Earlier beta versions pointed to a redesigned interface, additional watch-face customization tools, and Samsung Health additions including Cardio Load tracking and sleep-time vital-sign insights.
Beta testing also included updated workout controls, more modes for remotely controlling a phone camera, and a more flexible Trackback feature for navigating a completed route. Samsung has not confirmed when One UI 9 Watch will begin reaching Galaxy Watch 8 owners outside South Korea.
