SM-S721U1 10 countries Android 16

Samsung Galaxy S24 FE S721U1UESBCZD1 Firmware

Samsung Galaxy S24 FE S721U1UESBCZD1 is an Android 16 firmware for 10 countries, 21 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 S721U1UESACZC1: bootloader binary raised from A (10) to B (11), so after installing it there is no way back to older builds; security patch 2026-04-05 instead of 2026-03-05. A newer build for SM-S721U1 is available: S721U1UEUEEZIF.

OS updates guaranteed until: Android 21Security updates until: Oct 25, 2031
8.7/10 (116)16,350 times
Android 16
OS Version
2026-04-17
First release
other regions until 2026-04-23
2026-04-05
Security patch
10
Countries
21
CSC codes
B (11)
Bootloader binary

Bootloader binary B (11). Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy S24 FE use bootloader binary E (14) (latest: S721U1UEUEEZIF). If your device already runs binary E (14), 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#.
    Your CSC is in Settings → About phone (About tablet) → Software information, or dial *#1234#. The CSC sets your region's features and network bands. Download the firmware for your country.
    2
    MODEM/CP Version: S721U1UESBCZD1
    ModelRegionCSC VersionBuild DateRelease dateSizeFile nameDownload
    SM-S721U1
    ACG, AIO, ATT, CCT, LRA, TFN, TMB, TMK, USC, VZW, XAA, XAR United States
    ATC, CHA, DSA, DSG, DSH, FKR, XAG
    		S721U1OYMBCZD1 2026-04-17 2026-04-17 11.545 GiB
    SM-S721U1_3_20260403170231_gl3ropqv49_fac.zip
    SM-S721U1
    PCT Puerto Rico
    LLA
    		S721U1OWABCZD1 2026-04-23 2026-04-23 11.711 GiB
    SM-S721U1_3_20260403051240_aw1krlov5r_fac.zip

    No matching downloads

    How to flash S721U1UESBCZD1

    • S721U1UESBCZD1 has bootloader binary B (11). Your device must run binary B (11) 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 S721U1UESBCZD1

    • 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: April 2026

    SMR Apr-2026 fixes 44 vulnerabilities, 14 of them critical. Android Security Bulletin: 33, Samsung Semiconductor: 4, Samsung-specific issues (SVE): 7.

    Most severe Samsung fixes:

    • high Improper check for exceptional conditions in Device Care prior to SMR Apr-2026 Release 1 allows physical attackers to bypass Knox Guard. (CVE-2026-21007)
    • high Improper input validation in Retail Mode prior to SMR Apr-2026 Release 1 allows local attackers to trigger privileged functions. (CVE-2026-21010)

    All fixes and Galaxy models with this patch

    Rollout of S721U1UESBCZD1 by region

    First release
    April 17, 2026
    Last region
    April 23, 2026
    Duration
    7 days
    Regions
    21
    1. Day 1 · · 19 regions
      United StatesACGAIOATTCCTLRATFNTMBTMKUSCVZWXAAXARATCCHADSADSGDSHFKRXAG
    2. Day 7 · · 2 regions
      Puerto RicoPCTLLA

    Device specifications

    • Launched withAndroid 14
    • Display diagonal17 cm (6.7")
    • Display resolution1080 x 2340 pixels
    • RAM8 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity4700 mAh
    • Weight213 g

    Specifications of SM-S721B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    S721U1UESBCZD1 is Android 16 firmware for Samsung Galaxy S24 FE, released for 10 countries, 21 CSC codes. It includes the 2026-04-05 security patch. Samsung built it on 2026-04-17.

    SMR Apr-2026 fixes 44 vulnerabilities, 14 of them critical. Android Security Bulletin: 33, Samsung Semiconductor: 4, Samsung-specific issues (SVE): 7.

    No. A newer build for SM-S721U1 is available: S721U1UEUEEZIF. Install it instead of S721U1UESBCZD1 unless you need this exact version. The previous build was S721U1UESACZC1.

    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 S24 FE must be on bootloader binary B (11) or lower.

    This build uses bootloader binary B (11). It can be flashed on a Samsung Galaxy S24 FE running binary B (11) or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 2 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 S24 FE

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

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    • 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

    The device is protected with improved security.

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

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    Model firmware by region