Samsung Galaxy S23 S911NKSS6CYB3
SM-S911N 1 country Android 14

Samsung Galaxy S23 S911NKSS6CYB3 Firmware

Samsung Galaxy S23 S911NKSS6CYB3 is an Android 14 firmware for South Korea (KOO, KTC, LUC, SKC). It is the same firmware configured per region and carrier (CSC). Find your country below, verify the file and download for free. Compared with the previous build S911NKSU5CYB1: bootloader binary raised from 5 to 6, so after installing it there is no way back to older builds; security patch 2025-03-01 instead of 2025-02-01. A newer build for SM-S911N is available: S911NKSU8GZIF.

OS updates guaranteed until: Android 17Security updates until: Jan 30, 2028
Download firmware
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Android 14
OS Version
2025-03-10
Build Date
2025-03-01
Security patch
1
Countries
4
CSC codes
6
Bootloader binary

Bootloader binary 6. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy S23 use bootloader binary 8 (latest: S911NKSU8GZIF). If your device already runs binary 8, this build cannot be flashed.

All regional downloads

Pick your region (CSC) to download the matching firmware package.

Paste your current build number from Settings > About phone (About tablet) > Software information, or the output of *#1234#.
    MODEM/CP Version: S911NKSS6CYB3
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-S911N
    KOO, KTC, LUC, SKC South Korea
    		S911NOKR6CYB3 2025-03-10 9.337 GiB
    SM-S911N_2_20250226172820_c6vystpznc_fac.zip
    		Download

    No matching downloads

    How to flash S911NKSS6CYB3

    • S911NKSS6CYB3 has bootloader binary 6. Your device must run binary 6 or lower: it is the 5th character from the end of your current build number.
    • CSC: Use CSC for a clean install, to change the region (CSC code), to downgrade or to repair a device that does not boot.
    • HOME_CSC: Use HOME_CSC to update the same model and region while keeping your data. Back up anyway: a failed update can still require a reset.
    • The Download Mode key combo depends on the model: see all combos.
    Full flashing guide
    Beware: Manually flashing firmwares may brick your device. Use it at your own risk and follow our tutorial steps.

    Security patch: March 2025

    SMR Mar-2025 fixes 55 vulnerabilities, 11 of them critical. Android Security Bulletin: 49, Samsung-specific issues (SVE): 6.

    Most severe Samsung fixes:

    • high Improper access control in SecSettingsIntelligence (CVE-2025-20903)

    All fixes and Galaxy models with this patch

    Rollout of S911NKSS6CYB3 by region

    Samsung released this build in all regions (4) on the same day, March 10, 2025.

    Device specifications

    • Launched withAndroid 13
    • Display diagonal15.5 cm (6.1")
    • Display resolution2340 x 1080 pixels
    • RAM8 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity3900 mAh
    • Weight168 g

    Specifications of SM-S911B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    S911NKSS6CYB3 is Android 14 firmware for Samsung Galaxy S23, released for South Korea (KOO, KTC, LUC, SKC). It includes the 2025-03-01 security patch. Samsung built it on 2025-03-10.

    SMR Mar-2025 fixes 55 vulnerabilities, 11 of them critical. Android Security Bulletin: 49, Samsung-specific issues (SVE): 6.

    No. A newer build for SM-S911N is available: S911NKSU8GZIF. Install it instead of S911NKSS6CYB3 unless you need this exact version. The previous build was S911NKSU5CYB1.

    Download the package for your region (CSC) and unzip it. In Odin, load each file into the slot with the same name: BL, AP, CP (if the package has one) and CSC, or HOME_CSC to keep your data. Odin checks the built-in checksum of every .tar.md5 file before flashing. The download is 9.337 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy S23 must be on bootloader binary 6 or lower.

    This build uses bootloader binary 6. It can be flashed on a Samsung Galaxy S23 running binary 6 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 11 other builds of this model use the same binary, so you can switch between them in both directions.

    Other builds and changelog for Samsung Galaxy S23

    No changelog details available.
    Model firmware by region