SM-F956U1 10 countries Android 16

Samsung Galaxy Z Fold6 F956U1UES3CZC5 Firmware

Samsung Galaxy Z Fold6 F956U1UES3CZC5 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 F956U1UES3CZC1: security patch 2026-04-05 instead of 2026-03-05. A newer build for SM-F956U1 is available: F956U1UES4EZJ1.

OS updates guaranteed until: Android 21Security updates until: Jul 1, 2031
Download firmware
8.9/10 (119)14,220 times
Android 16
OS Version
2026-04-10
First release
other regions until 2026-04-14
2026-04-05
Security patch
10
Countries
21
CSC codes
3
Bootloader binary

Bootloader binary 3. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy Z Fold6 use bootloader binary 4 (latest: F956U1UES4EZJ1). If your device already runs binary 4, 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: F956U1UES3CZC5
    ModelRegionCSC VersionBuild DateRelease dateSizeFile nameDownload
    SM-F956U1
    ACG, AIO, ATT, CCT, LRA, TFN, TMB, TMK, USC, VZW, XAA, XAR United States
    ATC, CHA, DSA, DSG, DSH, FKR, XAG
    		F956U1OYM3CZC5 2026-04-11 2026-04-13 12.623 GiB
    SM-F956U1_3_20260331175641_b6of6pnue7_fac.zip
    		Download
    SM-F956U1
    PCT Puerto Rico
    LLA
    		F956U1OWA3CZB1 2026-04-14 2026-04-14 12.787 GiB
    SM-F956U1_3_20260401233240_ggk1l5n7ya_fac.zip
    		Download

    No matching downloads

    How to flash F956U1UES3CZC5

    • F956U1UES3CZC5 has bootloader binary 3. Your device must run binary 3 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 F956U1UES3CZC5

    • 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 F956U1UES3CZC5 by region

    First release
    April 13, 2026
    Last region
    April 14, 2026
    Duration
    2 days
    Regions
    21
    1. Day 1 · · 19 regions
      United StatesACGAIOATTCCTLRATFNTMBTMKUSCVZWXAAXARATCCHADSADSGDSHFKRXAG
    2. Day 2 · · 2 regions
      Puerto RicoPCTLLA

    Device specifications

    • Launched withAndroid 14
    • Display diagonal19.3 cm (7.6")
    • Display resolution2160 x 1856 pixels
    • RAM12 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity4400 mAh
    • Weight239 g

    Specifications of SM-F956B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    F956U1UES3CZC5 is Android 16 firmware for Samsung Galaxy Z Fold6, released for 10 countries, 21 CSC codes. It includes the 2026-04-05 security patch. Samsung built it on 2026-04-10.

    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-F956U1 is available: F956U1UES4EZJ1. Install it instead of F956U1UES3CZC5 unless you need this exact version. The previous build was F956U1UES3CZC1.

    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 Z Fold6 must be on bootloader binary 3 or lower.

    This build uses bootloader binary 3. It can be flashed on a Samsung Galaxy Z Fold6 running binary 3 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 3 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 Z Fold6

    • 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 6 older builds
    One UI 8.0 (Android 16)
    Galaxy AI

    See calls on the screen
    Call captions show what each person says on the screen in real time during calls. Follow the conversation on your screen to make sure you don’t miss anything.

    Create unique pet portraits
    Bring out your pet's personality with Portrait studio. You can now apply portrait effects to pictures of dogs and cats in addition to people. Choose from styles like Fisheye lens, oil painting, and more.

    View original and edited versions side-by-sid...

    • 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.

    • The security of your device has been improved.

    • Stability and reliability
    Device behavior has been improved.
    • Security
    The device is protected with improved security.

    Model firmware by region