Samsung has begun rolling out the November 2026 security update to the Galaxy Tab S11 and Galaxy Tab S11 Ultra — but only for cellular models sold in South Korea, as of Thursday morning. The patch fixes 179 vulnerabilities, per SamMobile’s reporting. Firmware versions are X736NKOSACZK3 (Tab S11) and X936NKOSACZK3 (Tab S11 Ultra).

Non-cellular and global variants are expected to follow “over the next few days”, though no timeline or regional rollout order is confirmed. The update is available manually via Settings > Software update > Check for updates. No Android version bump or One UI feature drop is included, this is strictly a security refresh.

Samsung hasn’t announced when One UI 9.5 will arrive, even though both tablets are eligible. There’s no word on whether the update carries over to the Galaxy Tab S11+ or any other S11-series SKUs beyond the base and Ultra models. For now, it’s South Korea first, and cellular only.