Samsung Galaxy S25 S931ZSCU1DZIF
SM-S931Z 2 countries Android 17

Samsung Galaxy S25 S931ZSCU1DZIF Firmware

Samsung Galaxy S25 S931ZSCU1DZIF is an Android 17 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 S931ZSCS1CZH6: Android updated from Android 16 to Android 17; security patch 2026-09-05 instead of 2026-08-05. This is the newest build for SM-S931Z.

OS updates guaranteed until: Android 22Security updates until: Jan 30, 2032
Download firmware
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Android 17
OS Version
2026-09-21
Build Date
2026-09-05
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: S931ZSCU1DZIF
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-S931Z
    SBM, SJP
    		S931ZQBM1DZIF 2026-10-15 17.116 GiB
    SM-S931Z_2_20260921075401_f3flnz3k1b_fac.zip
    		Download

    No matching downloads

    How to flash S931ZSCU1DZIF

    • S931ZSCU1DZIF 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 S931ZSCU1DZIF

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

    Security patch: September 2026

    SMR Sep-2026 fixes 80 vulnerabilities, 20 of them critical. Android Security Bulletin: 58, Samsung Semiconductor: 1, Samsung-specific issues (SVE): 21.

    Most severe Samsung fixes:

    • critical Heap-based buffer overflow in DNG decoder of libimagecodec.quram.so prior to SMR Sep-2026 Release 1 allows remote attackers to execute arbitrary code. (CVE-2026-21095)
    • critical Heap-based buffer overflow in JPEG decoder of libimagecodec.quram.so prior to SMR Sep-2026 Release 1 allows remote attackers to execute arbitrary code. (CVE-2026-21096)
    • high Out-of-bounds write in libmdnie.so prior to SMR Sep-2026 Release 1 allows local attackers to execute arbitrary code with system server privilege. (CVE-2026-21087)

    All fixes and Galaxy models with this patch

    Rollout of S931ZSCU1DZIF by region

    Samsung released this build in all regions (2) on the same day, October 15, 2026.

    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

    S931ZSCU1DZIF is Android 17 firmware for Samsung Galaxy S25, released for SBM, SJP. It includes the 2026-09-05 security patch. Samsung built it on 2026-09-21.

    SMR Sep-2026 fixes 80 vulnerabilities, 20 of them critical. Android Security Bulletin: 58, Samsung Semiconductor: 1, Samsung-specific issues (SVE): 21.

    Yes. S931ZSCU1DZIF is the newest build for SM-S931Z on SamFirm. The previous build was S931ZSCS1CZH6.

    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 17.116 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.
    · New and / or enhanced features.
    · Further improvements to performance.

    Model firmware by region