Samsung Rolls Out One UI 8.5 Stable Update for Galaxy Tab S11 and S23 Series

By: Harsh Vardhan

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Updated on: 21-May-2026

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​Samsung has begun rolling out the One UI 8.5 stable update to its Galaxy Tab S11 and Galaxy Tab S11 Ultra tablets. These devices are the first tablets to receive the stable One UI 8.5 update. The update is currently available in South Korea, with plans to expand to other regions soon.

Key Highlights

• Samsung releases One UI 8.5 stable update for Galaxy Tab S11 and S11 Ultra in South Korea.
• Galaxy S23 series receives One UI 8.5 update in India and Europe after initial South Korea launch.
• Firmware versions X736NKOU5BZE3 and X936NKOU5BZE3 for Tab S11 and S11 Ultra respectively.
• Galaxy S23 series update size is 300MB for beta users and 4GB for non-beta users.

Firmware Versions and Availability

The Galaxy Tab S11 receives the One UI 8.5 update with firmware version X736NKOU5BZE3. The Galaxy Tab S11 Ultra gets the update with firmware version X936NKOU5BZE3. Both updates are being released in South Korea as the initial market. Samsung is expected to make the update available in more countries in the coming weeks.

In addition to the tablet updates, Samsung has also started rolling out the stable One UI 8.5 update for the Galaxy S23 series. The update, which was first released in South Korea, is now available in India and Europe. The firmware version for the Galaxy S23 series is S91xBXXU9FZDP.

Update Size and Installation

The One UI 8.5 update for the Galaxy S23 series requires a download size of 300MB for users who participated in the beta program. For non-beta users, the update size is larger, requiring a 4GB download. Users who have not yet received the update notification can check for it manually through the device settings.

Samsung’s release of the One UI 8.5 stable update marks a significant step in its software update schedule. The company continues to expand the availability of its latest software to more devices and regions.