SM-R875N 3 countries Android 16

Samsung Galaxy Watch4 R875NKOS2EZG3 Firmware

Samsung Galaxy Watch4 R875NKOS2EZG3 is an Android 16 firmware for LUO, SKO, South Korea (KOO, KTC, KTO, 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 R875NKOS2EZE1, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. This is the newest build for SM-R875N.

Download firmware
9.0/10 (55)3,263 times
Android 16
OS Version
2026-08-20
Build Date
3
Countries
7
CSC codes
2
Bootloader binary

Bootloader binary 2. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

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: R875NKOS2EZG3
    ModelRegionCSC VersionSizeFile nameDownload
    SM-R875N
    KOO South Korea
    		R875NOKO2EZG3 3.144 GiB
    SM-R875N_4_20260820184141_db8mi85e0u_fac.zip
    SM-R875N
    KTC, KTO, LUC, SKC South Korea
    LUO, SKO
    		R875NOKA2EZG3 3.156 GiB
    SM-R875N_4_20260820184131_jhu6pimhwd_fac.zip

    No matching downloads

    How to flash R875NKOS2EZG3

    • R875NKOS2EZG3 has bootloader binary 2. Your device must run binary 2 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.

    Device specifications

    • Launched withWear OS
    • Display diagonal3.56 cm (1.4")
    • Display technologyOLED
    • Display resolution450 x 450 pixels
    • RAM1500 MB
    • Flash memory16 GB
    • Battery capacity361 mAh
    • Weight30.3 g
    • Band colourSilver

    Specifications of SM-R875F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    R875NKOS2EZG3 is Android 16 firmware for Samsung Galaxy Watch4, released for LUO, SKO, South Korea (KOO, KTC, KTO, LUC, SKC). Samsung built it on 2026-08-20.

    Yes. R875NKOS2EZG3 is the newest build for SM-R875N on SamFirm. The previous build was R875NKOS2EZE1.

    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 Watch4 must be on bootloader binary 2 or lower.

    This build uses bootloader binary 2. It can be flashed on a Samsung Galaxy Watch4 running binary 2 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 Watch4

    No changelog details available.
    Model firmware by region