Samsung Galaxy S21+ 5G G996NKSSBHYK5
SM-G996N 1 country Android 15

Samsung Galaxy S21+ 5G G996NKSSBHYK5 Firmware

Samsung Galaxy S21+ 5G G996NKSSBHYK5 is an Android 15 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 G996NKSSAHYH5: bootloader binary raised from A (10) to B (11), so after installing it there is no way back to older builds; security patch 2025-11-01 instead of 2025-08-01. A newer build for SM-G996N is available: G996NKSSCHZA9.

OS updates guaranteed until: Android 15Security updates until: Jan 2, 2026
Download firmware
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Android 15
OS Version
2025-11-27
Build Date
2025-11-01
Security patch
1
Countries
4
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 S21+ 5G use bootloader binary C (12) (latest: G996NKSSCHZA9). If your device already runs binary C (12), 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: G996NKOSBHYK5
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-G996N
    KOO, KTC, LUC, SKC South Korea
    		G996NOKRBHYK5 2025-11-27 7.549 GiB
    SM-G996N_5_20251112110231_u1474n8ulw_fac.zip
    		Download

    No matching downloads

    How to flash G996NKSSBHYK5

    • G996NKSSBHYK5 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.

    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 G996NKSSBHYK5 by region

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

    Device specifications

    • Launched withAndroid 11
    • Display diagonal17 cm (6.7")
    • Display resolution2400 x 1080 pixels
    • Display typeDynamic AMOLED 2X
    • RAM8 GB
    • RAM typeLPDDR5
    • Rear camera resolution12 MP
    • Rear camera typeTriple camera
    • Battery capacity4800 mAh
    • Weight202 g

    Specifications of SM-G996B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    G996NKSSBHYK5 is Android 15 firmware for Samsung Galaxy S21+ 5G, released for South Korea (KOO, KTC, LUC, SKC). It includes the 2025-11-01 security patch. Samsung built it on 2025-11-27.

    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-G996N is available: G996NKSSCHZA9. Install it instead of G996NKSSBHYK5 unless you need this exact version. The previous build was G996NKSSAHYH5.

    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 7.549 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy S21+ 5G must be on bootloader binary B (11) or lower.

    This build uses bootloader binary B (11). It can be flashed on a Samsung Galaxy S21+ 5G running binary B (11) 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 B (11).

    Other builds and changelog for Samsung Galaxy S21+ 5G

    No changelog details available.
    Model firmware by region