Samsung Galaxy A25 5G A256NKSS7DYK3
SM-A256N 1 country Android 16

Samsung Galaxy A25 5G A256NKSS7DYK3 Firmware

Samsung Galaxy A25 5G A256NKSS7DYK3 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 A256NKSS6DYI5: bootloader binary raised from 6 to 7, so after installing it there is no way back to older builds. A newer build for SM-A256N is available: A256NKSSBEZH1.

OS updates guaranteed until: Android 18Security updates until: Jan 2, 2029
Download firmware
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Android 16
OS Version
2025-11-10
Build Date
2025-11-01
Security patch
1
Countries
4
CSC codes
7
Bootloader binary

Bootloader binary 7. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy A25 5G use bootloader binary B (11) (latest: A256NKSSBEZH1). If your device already runs binary B (11), 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: A256NKOS7DYK1
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-A256N
    KOO, KTC, LUC, SKC South Korea
    		A256NOKR7DYK3 2025-11-27 7.332 GiB
    SM-A256N_3_20251110114731_cc378lk4wm_fac.zip
    		Download

    No matching downloads

    How to flash A256NKSS7DYK3

    • A256NKSS7DYK3 has bootloader binary 7. Your device must run binary 7 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: November 2025

    SMR Nov-2025 fixes 33 vulnerabilities, 2 of them critical. Android Security Bulletin: 24, Samsung Semiconductor: 5, Samsung-specific issues (SVE): 4.

    Most severe Samsung fixes:

    • high Out-of-bounds write in handling opcode in fingerprint trustlet (CVE-2025-21071)
    • high Out-of-bounds read in libimagecodec.quram.so (CVE-2025-21074)
    • high Out-of-bounds write in libimagecodec.quram.so (CVE-2025-21075)

    All fixes and Galaxy models with this patch

    Rollout of A256NKSS7DYK3 by region

    Samsung released this build in all regions (4) on the same day, November 27, 2025.

    Device specifications

    • Display diagonal16.5 cm (6.5")
    • Display resolution1080 x 2340 pixels
    • RAM6 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity5000 mAh
    • Weight197 g

    Specifications of SM-A256B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    A256NKSS7DYK3 is Android 16 firmware for Samsung Galaxy A25 5G, released for South Korea (KOO, KTC, LUC, SKC). It includes the 2025-11-01 security patch. Samsung built it on 2025-11-10.

    SMR Nov-2025 fixes 33 vulnerabilities, 2 of them critical. Android Security Bulletin: 24, Samsung Semiconductor: 5, Samsung-specific issues (SVE): 4.

    No. A newer build for SM-A256N is available: A256NKSSBEZH1. Install it instead of A256NKSS7DYK3 unless you need this exact version. The previous build was A256NKSS6DYI5.

    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 7.332 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy A25 5G must be on bootloader binary 7 or lower.

    This build uses bootloader binary 7. It can be flashed on a Samsung Galaxy A25 5G running binary 7 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 7.

    Other builds and changelog for Samsung Galaxy A25 5G

    No changelog details available.
    Model firmware by region