SM-L305N 1 country Android 16

Samsung Galaxy Watch7 L305NKOU1BYI4 Firmware

Samsung Galaxy Watch7 L305NKOU1BYI4 is an Android 16 firmware for South Korea (KOO, 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 L305NKOS1AYH1: Android updated from Android 14 to Android 16. A newer build for SM-L305N is available: L305NKOS3BZF4.

Download firmware
9.0/10 (32)342 times
Android 16
OS Version
2025-10-20
Build Date
1
Countries
2
CSC codes
1
Bootloader binary

Bootloader binary 1. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy Watch7 use bootloader binary 3 (latest: L305NKOS3BZF4). If your device already runs binary 3, 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: L305NKOU1BYI4
    ModelRegionCSC VersionSizeFile nameDownload
    SM-L305N
    KOO South Korea
    		L305NOKO1BYI4 3.575 GiB
    SM-L305N_1_20251020072740_4opapfaw25_fac.zip
    SM-L305N
    SKC South Korea
    		L305NOKA1BYI4 3.581 GiB
    SM-L305N_1_20251020072700_bhn2s4m4x2_fac.zip

    No matching downloads

    How to flash L305NKOU1BYI4

    • L305NKOU1BYI4 has bootloader binary 1. Your device must run binary 1 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 diagonal3.3 cm (1.3")
    • Display technologyAMOLED
    • Display resolution432 x 432 pixels
    • RAM2 MB
    • Battery capacity300 mAh
    • Weight28.8 g
    • Band colourGreen
    • Band sizeS/M

    Specifications of SM-L305F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    L305NKOU1BYI4 is Android 16 firmware for Samsung Galaxy Watch7, released for South Korea (KOO, SKC). Samsung built it on 2025-10-20.

    No. A newer build for SM-L305N is available: L305NKOS3BZF4. Install it instead of L305NKOU1BYI4 unless you need this exact version. The previous build was L305NKOS1AYH1.

    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 Watch7 must be on bootloader binary 1 or lower.

    This build uses bootloader binary 1. It can be flashed on a Samsung Galaxy Watch7 running binary 1 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 5 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 Watch7

    No changelog details available.
    Model firmware by region