
Samsung Galaxy S25 S931NKSSCCZH2 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 S931NKSSBCZG3 https://samfirm.shop/build/S931NKSSBCZG3: bootloader binary raised from B (11) to C (12), so after installing it there is no way back to older builds. A newer build for SM-S931N is available: S931NKSSDDZJ2 https://samfirm.shop/build/S931NKSSDDZJ2.
Bootloader binary C (12). Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.
Pick your region (CSC) to download the matching firmware package.
Samsung released this build in all regions (4) on the same day, August 26, 2026.
Specifications of SM-S931B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.