SM-F926N 1 country Android 12

Samsung Galaxy Z Fold3 5G F926NKSU1BUKO Firmware

Name: Samsung Galaxy Z Fold3 5G (SM-F926N)
Brand: Samsung
Availability: InStock

Samsung Galaxy Z Fold3 5G F926NKSU1BUKO is an Android 12 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 F926NTBU1BUKO, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-F926N is available: F926NKSSEKZH5.

OS updates guaranteed until: Android 15Security updates until: Aug 23, 2026

9.4/10 (480)17,582 times

Android 12

OS Version

2021-12-07

Build Date

n/a

Security patch

Countries

CSC codes

Bootloader binary

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

Newer builds of Samsung Galaxy Z Fold3 5G use bootloader binary E (14) (latest: F926NKSSEKZH5). If your device already runs binary E (14), this build cannot be flashed.

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: F926NKSU1BUKL

Model	Region	CSC Version	Release date	Size	File name	Download
SM-F926N	KOO, KTC, LUC, SKC South Korea	F926NOKR1BUKO	2021-12-07	6.39 GiB	SM-F926N_1_20211201081931_9v7vw9bsww_fac.zip

Device specifications

Launched withAndroid 11
Display diagonal19.3 cm (7.6")
Display resolution2208 x 1768 pixels
RAM12 GB
RAM typeLPDDR5
Rear camera resolution12 MP
Rear camera typeTriple camera
Battery capacity4400 mAh
Weight271 g

Specifications of SM-F926B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

How to flash F926NKSU1BUKO

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

F926NKSU1BUKO 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.

Frequently Asked Questions

F926NKSU1BUKO is Android 12 firmware for Samsung Galaxy Z Fold3 5G, released for South Korea (KOO, KTC, LUC, SKC). Samsung built it on 2021-12-07.

No. A newer build for SM-F926N is available: F926NKSSEKZH5. Install it instead of F926NKSU1BUKO unless you need this exact version. The previous build was F926NTBU1BUKO.

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 6.39 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy Z Fold3 5G must be on bootloader binary 1 or lower.

This build uses bootloader binary 1. It can be flashed on a Samsung Galaxy Z Fold3 5G running binary 1 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 31 other builds of this model use the same binary, so you can switch between them in both directions.