Samsung has started rolling out One UI 9 Watch to the Galaxy Watch 8 and Galaxy Watch 8 Classic. The update is based on Google’s Wear OS 7 and arrives after about two and a half months of beta testing. The rollout has begun in the US.
The Galaxy Watch 9 and Galaxy Watch Ultra 2 already shipped with Wear OS 7, so this update brings last year’s models to the same software.
One UI 9 Watch Update Details
The stable update carries these firmware versions:
- L320XXU2BZJ7 for the Galaxy Watch 8
- L500XXU2BZJ7 for the Galaxy Watch 8 Classic
It also includes the October 2026 security patch. The download is reportedly around 2 GB, and it should be much smaller for users who are already running the beta.
The update changes the main parts of the watch experience:
- a redesigned Galaxy Wearable app on the phone, with a cleaner layout and simpler customization controls
- a reorganized settings interface on the watch
- the option to swipe between watch faces from the main screen, without opening a separate customization menu
- double pinch and shake gestures grouped under a single toggle
Health tracking gets the most new features. Daily Cardio Load shows how much physical activity the wearer gets during the day. Samsung also adds improved sleep vitals monitoring, new heart health insights, and redesigned health charts that make fitness data easier to read.
How to Install One UI 9 Watch on the Galaxy Watch 8
The update is delivered through the phone the watch is paired with. To check for it:
- Open the Galaxy Wearable app on the paired phone.
- Go to Watch settings > Watch software update.
- Select Download and install.
The watch should have enough battery and stay close to the phone while the update installs, since a 2 GB package takes a while to transfer over Bluetooth or WiFi. Owners who run the One UI 9 Watch beta should see a smaller package, since most of the changes are already on their watches.
Owners outside the US may not see the update yet. Samsung usually starts watch updates in one market and adds regions over the following days, so checking again later is the best option for now.
For Galaxy Watch 8 owners, the update is the main software upgrade of the year. It brings the redesigned interface and new health tools of Samsung’s 2026 watches to last year’s hardware, so the gap between the two generations is now mostly hardware.
Samsung has not confirmed when One UI 9 Watch will reach other regions, such as Europe or Asia, or when older models such as the Galaxy Watch 7 will get it.
