SM-A556S 1 country Android 15

Samsung Galaxy Quantum5 A556SKSU5BYF2 Firmware

Name: Samsung Galaxy Quantum5 (SM-A556S)
Brand: Samsung
Availability: InStock

Samsung Galaxy Quantum5 A556SKSU5BYF2 is an Android 15 firmware for South Korea (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 A556SKSU4BYD9: bootloader binary raised from 4 to 5, so after installing it there is no way back to older builds. A newer build for SM-A556S is available: A556SKSUBEZJ1.

OS updates guaranteed until: Android 18Security updates until: Mar 23, 2029

9.1/10 (261)1,519 times

Android 15

OS Version

2025-06-19

Build Date

n/a

Security patch

Countries

CSC codes

Bootloader binary

Bootloader binary 5. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy Quantum5 use bootloader binary B (11) (latest: A556SKSUBEZJ1). If your device already runs binary B (11), 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: A556SKSU5BYF1

Model	Region	CSC Version	Release date	Size	File name	Download
SM-A556S	SKC South Korea	A556SSKC5BYF2	2025-06-19	7.866 GiB	SM-A556S_2_20250610150630_y3855t7vyv_fac.zip

Device specifications

Launched withAndroid 14
Display diagonal16.8 cm (6.6")
Display resolution1080 x 2340 pixels
RAM8 GB
Rear camera resolution50 MP
Rear camera typeTriple camera
Battery capacity5000 mAh
Weight213 g

Specifications of SM-A556B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

How to flash A556SKSU5BYF2

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

A556SKSU5BYF2 has bootloader binary 5. Your device must run binary 5 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

A556SKSU5BYF2 is Android 15 firmware for Samsung Galaxy Quantum5, released for South Korea (SKC). Samsung built it on 2025-06-19.

No. A newer build for SM-A556S is available: A556SKSUBEZJ1. Install it instead of A556SKSU5BYF2 unless you need this exact version. The previous build was A556SKSU4BYD9.

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 7.866 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy Quantum5 must be on bootloader binary 5 or lower.

This build uses bootloader binary 5. It can be flashed on a Samsung Galaxy Quantum5 running binary 5 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 5.