Samsung Galaxy S25 FE S731USQS2AYIF
SM-S731U 5 countries Android 16

Samsung Galaxy S25 FE S731USQS2AYIF Firmware

Samsung Galaxy S25 FE S731USQS2AYIF is an Android 16 firmware for 5 countries, 11 CSC codes. 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 S731USQU1AYIB: bootloader binary raised from 1 to 2, so after installing it there is no way back to older builds; security patch 2025-10-01 instead of 2025-09-01. A newer build for SM-S731U is available: S731USQS9CZJ2.

OS updates guaranteed until: Android 23Security updates until: Sep 30, 2032
Download firmware
8.8/10 (21)2,188 times
Android 16
OS Version
2025-10-16
First release
other regions until 2025-10-17
2025-10-01
Security patch
5
Countries
11
CSC codes
2
Bootloader binary

Bootloader binary 2. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy S25 FE use bootloader binary 9 (latest: S731USQS9CZJ2). If your device already runs binary 9, 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#.
    3
    MODEM/CP Version: S731USQS2AYIF
    ModelRegionCSC VersionBuild DateRelease dateSizeFile nameDownload
    SM-S731U
    AIO, TMB, TMK United States
    CHA, DSG
    		S731UOYN2AYIF 2025-10-17 2025-10-28 11.757 GiB
    SM-S731U_1_20251017000700_jh2pmazmkq_fac.zip
    		Download
    SM-S731U
    ATT United States
    DSA, DSH
    		S731UOYN2AYIF 2025-10-17 2025-10-28 11.757 GiB
    SM-S731U_1_20251017005201_5s89039n1p_fac.zip
    		Download
    SM-S731U
    CCT, USC, VZW United States
    		S731UOYN2AYIF 2025-10-16 2025-10-30 11.989 GiB
    SM-S731U_1_20251016231830_w4aigd4zdo_fac.zip
    		Download

    No matching downloads

    How to flash S731USQS2AYIF

    • S731USQS2AYIF has bootloader binary 2. Your device must run binary 2 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 S731USQS2AYIF

    • Security
    The device is protected with improved security.

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

    Security patch: October 2025

    SMR Oct-2025 fixes 25 vulnerabilities, 0 of them critical. Android Security Bulletin: 13, Samsung-specific issues (SVE): 12.

    Most severe Samsung fixes:

    • high Out-of-bounds write in fingerprint trustlet (CVE-2025-21044)
    • high Improper input validation in Contacts (CVE-2025-21050)
    • high Relative path traversal in Knox Enterprise (CVE-2025-21048)

    All fixes and Galaxy models with this patch

    Rollout of S731USQS2AYIF by region

    First release
    October 28, 2025
    Last region
    November 4, 2025
    Duration
    8 days
    Regions
    11
    1. Day 1 · · 2 regions
      United StatesAIOATT
    2. Day 2 · · 2 regions
      United StatesTMBTMK
    3. Day 3 · · 6 regions
      United StatesCCTVZWCHADSADSGDSH
    4. Day 8 · · 1 region
      United StatesUSC

    Device specifications

    • Launched withAndroid 16.0
    • Display diagonal17 cm (6.7")
    • Display resolution1080 x 2340 pixels
    • RAM8 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity4900 mAh
    • Weight190 g

    Specifications of SM-S731B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    S731USQS2AYIF is Android 16 firmware for Samsung Galaxy S25 FE, released for 5 countries, 11 CSC codes. It includes the 2025-10-01 security patch. Samsung built it on 2025-10-16.

    SMR Oct-2025 fixes 25 vulnerabilities, 0 of them critical. Android Security Bulletin: 13, Samsung-specific issues (SVE): 12.

    No. A newer build for SM-S731U is available: S731USQS9CZJ2. Install it instead of S731USQS2AYIF unless you need this exact version. The previous build was S731USQU1AYIB.

    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 Samsung Galaxy S25 FE must be on bootloader binary 2 or lower.

    This build uses bootloader binary 2. It can be flashed on a Samsung Galaxy S25 FE running binary 2 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". No other build of this model uses binary 2.

    Other builds and changelog for Samsung Galaxy S25 FE

    • Security
    The device is protected with improved security.

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

    One UI 9
    Galaxy AI

    Enhanced Now nudge
    Now nudge provides helpful suggestions in more places throughout your Galaxy experience. In addition to the keyboard, suggestions will now appear in conversation notifications and in a floating button in the bottom right corner of the screen. There are also several new types of suggestions, like addresses or saving places in Google Maps.

    Focus on someone important
    My FanCam lets you select a person in a video and follow them automatically while cropping...

    • Security
    The device is protected with improved security.

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

    One UI 8.5
    Visual design

    Fresh new look
    One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus...

    • Security
    The device is protected with improved security.

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

    Show 1 older build

    • Check stock prices without unlocking
    Stocks you follow on Google Finance with big price changes will appear on your Now bar at the end of the trading day.
    • Stability and reliability
    Device behavior has been improved.
    • Security
    The device is protected with improved security.

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

    Model firmware by region