SM-S948N 1 country Android 16

Samsung Galaxy S26 Ultra S948NKSU4AZHJ Firmware

Name: Samsung Galaxy S26 Ultra (SM-S948N)
Brand: Samsung
Availability: InStock

Samsung Galaxy S26 Ultra S948NKSU4AZHJ 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 S948NKSS4AZG3, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-S948N is available: S948NKSS4BZIG.

OS updates guaranteed until: Android 23Security updates until: Feb 23, 2033

9.4/10 (52)1,454 times

Android 16

OS Version

2026-08-23

Build Date

n/a

Security patch

Countries

CSC codes

Bootloader binary

Bootloader binary 4. 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: S948NKSS4AZG1

Model	Region	CSC Version	Release date	Size	File name	Download
SM-S948N	KOO, KTC, LUC, SKC South Korea	S948NOKR4AZHJ	2026-09-17	17.769 GiB	SM-S948N_1_20260823182141_ppctzg48yx_fac.zip

Device specifications

Launched withAndroid 16.0
Display diagonal17.5 cm (6.9")
Display resolution3120 x 1440 pixels
RAM12 GB
Rear camera resolution200 MP
Rear camera typeQuad camera
Battery capacity5000 mAh
Weight214 g

Specifications of SM-S948B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

How to flash S948NKSU4AZHJ

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

S948NKSU4AZHJ has bootloader binary 4. Your device must run binary 4 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

S948NKSU4AZHJ is Android 16 firmware for Samsung Galaxy S26 Ultra, released for South Korea (KOO, KTC, LUC, SKC). Samsung built it on 2026-08-23.

No. A newer build for SM-S948N is available: S948NKSS4BZIG. Install it instead of S948NKSU4AZHJ unless you need this exact version. The previous build was S948NKSS4AZG3.

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 17.769 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy S26 Ultra must be on bootloader binary 4 or lower.

This build uses bootloader binary 4. It can be flashed on a Samsung Galaxy S26 Ultra running binary 4 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 3 other builds of this model use the same binary, so you can switch between them in both directions.