SM-F721N 1 country Android 16

Samsung Galaxy Z Flip4 F721NKSS8IZE2 Firmware

Name: Samsung Galaxy Z Flip4 (SM-F721N)
Brand: Samsung
Availability: InStock

Samsung Galaxy Z Flip4 F721NKSS8IZE2 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 F721NKSS7IZCS https://samfirm.shop/build/F721NKSS7IZCS: bootloader binary raised from 7 to 8, so after installing it there is no way back to older builds. A newer build for SM-F721N is available: F721NKSS8IZH2 https://samfirm.shop/build/F721NKSS8IZH2.

OS updates guaranteed until: Android 16Security updates until: Jul 24, 2027

9.3/10 (102)3,172 times

Android 16

OS Version

2026-05-07

First release

other regions until 2026-05-18

n/a

Security patch

Countries

CSC codes

Bootloader binary

Bootloader binary 8. 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: F721NKSS8IZE2

Model	Region	CSC Version	Build Date	Release date	Size	File name	Download
SM-F721N	KOO, KTC, LUC, SKC South Korea	F721NOKR8IZE2	2026-05-18	2026-05-18	8.914 GiB	SM-F721N_5_20260507091900_fjl4dd1991_fac.zip
SM-F721N	KOO South Korea	F721NOKT8IZE2	2026-05-18	2026-05-18	9.001 GiB	SM-F721N_14_20260507095501_f38sewrn0m_fac.zip

Device specifications

Launched withAndroid 12
Display diagonal17 cm (6.7")
Display resolution2640 x 1080 pixels
RAM8 GB
Rear camera resolution12 MP
Rear camera typeDual camera
Battery capacity3700 mAh
Weight187 g

Specifications of SM-F721B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

How to flash F721NKSS8IZE2

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

F721NKSS8IZE2 has bootloader binary 8. Your device must run binary 8 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

F721NKSS8IZE2 is Android 16 firmware for Samsung Galaxy Z Flip4, released for South Korea (KOO, KTC, LUC, SKC). Samsung built it on 2026-05-07.

No. A newer build for SM-F721N is available: F721NKSS8IZH2. Install it instead of F721NKSS8IZE2 unless you need this exact version. The previous build was F721NKSS7IZCS.

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 Z Flip4 must be on bootloader binary 8 or lower.

This build uses bootloader binary 8. It can be flashed on a Samsung Galaxy Z Flip4 running binary 8 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.