Samsung Galaxy Z Fold4 F936NKSS6IYL1
SM-F936N 1 country Android 16

Samsung Galaxy Z Fold4 F936NKSS6IYL1 Firmware

Samsung Galaxy Z Fold4 F936NKSS6IYL1 is an Android 16 firmware for South Korea (KOO, KTC, LUC, SKC). 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 F936NKSS6IYK3: security patch 2025-12-01 instead of 2025-11-01. A newer build for SM-F936N is available: F936NKSS8IZH2.

OS updates guaranteed until: Android 16Security updates until: Jul 30, 2027
Download firmware
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Android 16
OS Version
2025-12-15
Build Date
2025-12-01
Security patch
1
Countries
4
CSC codes
6
Bootloader binary

Bootloader binary 6. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy Z Fold4 use bootloader binary 8 (latest: F936NKSS8IZH2). If your device already runs binary 8, 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#.
    MODEM/CP Version: F936NKSU6IYI2
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-F936N
    KOO, KTC, LUC, SKC South Korea
    		F936NOKR6IYL1 2025-12-15 9.29 GiB
    SM-F936N_5_20251208172541_if8j67yc4m_fac.zip
    		Download

    No matching downloads

    How to flash F936NKSS6IYL1

    • F936NKSS6IYL1 has bootloader binary 6. Your device must run binary 6 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.

    Security patch: December 2025

    SMR Dec-2025 fixes 65 vulnerabilities, 6 of them critical. Android Security Bulletin: 57, Samsung-specific issues (SVE): 8.

    Most severe Samsung fixes:

    • high Out-of-bounds write in decoding metadata in fingerprint trustlet (CVE-2025-21072)
    • high Out-of-bounds write in libimagecodec.quram.so (CVE-2025-58477)
    • high Out-of-bounds write in libimagecodec.quram.so (CVE-2025-58478)

    All fixes and Galaxy models with this patch

    Rollout of F936NKSS6IYL1 by region

    Samsung released this build in all regions (4) on the same day, December 15, 2025.

    Device specifications

    • Display diagonal19.3 cm (7.6")
    • Display resolution2176 x 1812 pixels
    • RAM12 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity4400 mAh
    • Weight263 g

    Specifications of SM-F936B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    F936NKSS6IYL1 is Android 16 firmware for Samsung Galaxy Z Fold4, released for South Korea (KOO, KTC, LUC, SKC). It includes the 2025-12-01 security patch. Samsung built it on 2025-12-15.

    SMR Dec-2025 fixes 65 vulnerabilities, 6 of them critical. Android Security Bulletin: 57, Samsung-specific issues (SVE): 8.

    No. A newer build for SM-F936N is available: F936NKSS8IZH2. Install it instead of F936NKSS6IYL1 unless you need this exact version. The previous build was F936NKSS6IYK3.

    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 9.29 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy Z Fold4 must be on bootloader binary 6 or lower.

    This build uses bootloader binary 6. It can be flashed on a Samsung Galaxy Z Fold4 running binary 6 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 9 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 Fold4

    No changelog details available.
    Model firmware by region