SM-R965N 1 country Android 16

Samsung Galaxy Watch6 Classic R965NKOU2CZB6 Firmware

Name: Samsung Galaxy Watch6 Classic (SM-R965N)
Brand: Samsung
Availability: InStock

Samsung Galaxy Watch6 Classic R965NKOU2CZB6 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 R965NKOS1CZA1 https://samfirm.shop/build/R965NKOS1CZA1: bootloader binary raised from 1 to 2, so after installing it there is no way back to older builds. A newer build for SM-R965N is available: R965NKOS2CZF5 https://samfirm.shop/build/R965NKOS2CZF5.

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Android 16

OS Version

n/a

Build Date

n/a

Security patch

Countries

CSC codes

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.

Will it work on my device?

Paste your current build number from Settings > About phone (About tablet) > Software information, or the output of *#1234#.

MODEM/CP Version: R965NKOU2CZB6

Model	Region	CSC Version	Size	File name	Download
SM-R965N	KOO South Korea	R965NOKO2CZB6	3.457 GiB	SM-R965N_3_20260311081910_ms8z2zr6u5_fac.zip
SM-R965N	SKC South Korea	R965NOKA2CZB6	3.462 GiB	SM-R965N_3_20260311083612_pc4ayyj7cx_fac.zip

How to flash R965NKOU2CZB6

Install Samsung USB Drivers:Download Official Drivers
Download Odin Flash Tool:

R965NKOU2CZB6 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.

Frequently Asked Questions

R965NKOU2CZB6 is Android 16 firmware for Samsung Galaxy Watch6 Classic, released for South Korea (KOO, SKC).

No. A newer build for SM-R965N is available: R965NKOS2CZF5. Install it instead of R965NKOU2CZB6 unless you need this exact version. The previous build was R965NKOS1CZA1.

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 Watch6 Classic must be on bootloader binary 2 or lower.

This build uses bootloader binary 2. It can be flashed on a Samsung Galaxy Watch6 Classic 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.