Samsung Galaxy S25 S931ZSCS1BYK2
SM-S931Z 2 countries Android 16

Samsung Galaxy S25 S931ZSCS1BYK2 Firmware

Samsung Galaxy S25 S931ZSCS1BYK2 is an Android 16 firmware for SBM, SJP. 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 S931ZSCU1BYI7: security patch 2025-11-01 instead of 2025-09-01. A newer build for SM-S931Z is available: S931ZSCU1DZIF.

OS updates guaranteed until: Android 22Security updates until: Jan 28, 2032
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Android 16
OS Version
2025-11-11
Build Date
2025-11-01
Security patch
2
Countries
2
CSC codes
1
Bootloader binary

Bootloader binary 1. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

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: S931ZSCS1BYK2
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-S931Z
    SBM, SJP
    		S931ZQBM1BYK2 2025-11-27 16.207 GiB
    SM-S931Z_2_20251111235241_kqhs5ronsi_fac.zip

    No matching downloads

    How to flash S931ZSCS1BYK2

    • S931ZSCS1BYK2 has bootloader binary 1. Your device must run binary 1 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.

    What's new in S931ZSCS1BYK2

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    Security patch: November 2025

    SMR Nov-2025 fixes 33 vulnerabilities, 2 of them critical. Android Security Bulletin: 24, Samsung Semiconductor: 5, Samsung-specific issues (SVE): 4.

    Most severe Samsung fixes:

    • high Out-of-bounds write in handling opcode in fingerprint trustlet (CVE-2025-21071)
    • high Out-of-bounds read in libimagecodec.quram.so (CVE-2025-21074)
    • high Out-of-bounds write in libimagecodec.quram.so (CVE-2025-21075)

    All fixes and Galaxy models with this patch

    Rollout of S931ZSCS1BYK2 by region

    Samsung released this build in all regions (2) on the same day, November 27, 2025.

    Device specifications

    • Launched withAndroid 15
    • Display diagonal15.8 cm (6.2")
    • Display resolution2340 x 1080 pixels
    • RAM12 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity4000 mAh
    • Weight162 g

    Specifications of SM-S931B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    S931ZSCS1BYK2 is Android 16 firmware for Samsung Galaxy S25, released for SBM, SJP. It includes the 2025-11-01 security patch. Samsung built it on 2025-11-11.

    SMR Nov-2025 fixes 33 vulnerabilities, 2 of them critical. Android Security Bulletin: 24, Samsung Semiconductor: 5, Samsung-specific issues (SVE): 4.

    No. A newer build for SM-S931Z is available: S931ZSCU1DZIF. Install it instead of S931ZSCS1BYK2 unless you need this exact version. The previous build was S931ZSCU1BYI7.

    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 16.207 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy S25 must be on bootloader binary 1 or lower.

    This build uses bootloader binary 1. It can be flashed on a Samsung Galaxy S25 running binary 1 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 10 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 S25

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

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    · Device stability improvements, bug fixes.
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    · Further improvements to performance.

    Model firmware by region