Galaxy S23 Series & S23 FE Receive February 2026 Security Update

Madhav BiradarFebruary 26, 20261 Mins read

Samsung has started securing its 2023 flagship models by rolling out the February 2026 security update for the Galaxy S23, S23 Plus, S23 Ultra, and Galaxy S23 FE smartphones. The update is currently rolling out in South Korea with firmware version S918NKSS7EZB2 for the Galaxy S23 series in a 441MB package, and version S711NKSSDDZB2 for the Galaxy S23 FE in a 437MB package.

The latest firmware focuses on improving device security and overall system stability. According to the update details, it addresses over 37 vulnerabilities listed in the latest Android security bulletin that were found in the previous software version.

With the launch of stable One UI 8.5 alongside the Galaxy S26 Ultra, we can expect a major update for these devices in the next few weeks.

Changelog Details

Firmware Version: S918NKSS7EZB2
Update Size: ~441MB
Security Level: February 5, 2026
OS: One UI 8.0
Changes: Bug fixes, improved security
Region: South Korea (expanding soon)

How to Install

The rollout is currently limited to select regions and will expand to other countries soon. Galaxy S23 users can manually check for the update by navigating to Settings → Software update → Download and install.

Source

Written by

Madhav Biradar

Madhav Biradar is the Lead Software Analyst and Founder of TizenHelp. With over 13 years of experience tracking the evolution of Samsung’s ecosystem—from the early days of Tizen OS to the latest One UI Build & releases — specializes in firmware deconstruction and beta-cycle analysis. Based in India, he has personally tested every flagship Galaxy device since the Galaxy S2, providing readers with hands-on insights that go beyond standard spec sheets. Expertise: One UI Updates, firmware leaks, Samsung Firmware Deployment, Galaxy Ecosystem Integration, etc.