SM-A366N 1 country Android 16

Samsung Galaxy A36 5G A366NKSS3BYK3 Firmware

Name: Samsung Galaxy A36 5G (SM-A366N)
Brand: Samsung
Availability: InStock

Samsung Galaxy A36 5G A366NKSS3BYK3 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. A newer build for SM-A366N is available: A366NKSU9DZIF https://samfirm.shop/build/A366NKSU9DZIF.

OS updates guaranteed until: Android 21Security updates until: Mar 25, 2031

8.9/10 (34)802 times

Android 16

OS Version

2025-11-24

Build Date

n/a

Security patch

Countries

CSC codes

Bootloader binary

Bootloader binary 3. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy A36 5G use bootloader binary 9 (latest: A366NKSU9DZIF). If your device already runs binary 9, 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: A366NKOS3BYK1

Model	Region	CSC Version	Release date	Size	File name	Download
SM-A366N	KOO, KTC, LUC, SKC South Korea	A366NOKR3BYK3	2025-12-08	7.689 GiB	SM-A366N_2_20251124163741_fdrejt2qhk_fac.zip

Device specifications

Launched withAndroid 15
Display diagonal17 cm (6.7")
Display resolution1080 x 2340 pixels
RAM6 GB
Rear camera resolution50 MP
Rear camera typeTriple camera
Battery capacity5000 mAh
Weight195 g

Specifications of SM-A366B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

How to flash A366NKSS3BYK3

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

A366NKSS3BYK3 has bootloader binary 3. Your device must run binary 3 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

A366NKSS3BYK3 is Android 16 firmware for Samsung Galaxy A36 5G, released for South Korea (KOO, KTC, LUC, SKC). Samsung built it on 2025-11-24.

No. A newer build for SM-A366N is available: A366NKSU9DZIF. Install it instead of A366NKSS3BYK3 unless you need this exact version.

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 7.689 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy A36 5G must be on bootloader binary 3 or lower.

This build uses bootloader binary 3. It can be flashed on a Samsung Galaxy A36 5G running binary 3 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". No other build of this model uses binary 3.