Samsung Galaxy Quantum5 (SM-A556S) Firmware Overview
What is the latest SM-A556S firmware?
A556SKSUBEZJ1, released October 6, 2026 with Android 17. It is a feature update on bootloader binary 11. The archive holds 21 official builds across 1 region (CSC).
Is the Samsung Galaxy Quantum5 still getting updates?
Yes. The newest build is from October 2026.
Which Android versions did it get?
The SM-A556S builds in the archive run Android 14 to 17. The earliest build we have for each version:
- Android 17: A556SKSUBEZJ1 (Oct 2026), 1 build in total
- Android 16: A556SKSU6CYI6 (Sep 2025), 13 builds in total
- Android 15: A556SKSU4BYD9 (May 2025), 4 builds in total
- Android 14: A556SKSS3AYB1 (Feb 2025), 3 builds in total
Can I downgrade the SM-A556S firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 3 to 11:
- Binary 11 — since Sep 2026
- Binary 10 — since Aug 2026
- Binary 9 — since Jul 2026
- Binary 8 — since Jun 2026
- Binary 7 — since Mar 2026
- Binary 6 — since Jul 2025
- Binary 5 — since Jun 2025
- Binary 4 — since Mar 2025
- Binary 3 — since Feb 2025
A phone already on binary 11 rejects builds with a lower binary in Odin ("SW REV CHECK FAIL"), so it can go back to an earlier Android version only if that version has a binary 11 build. How to read a build number.
All SM-A556S firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
A556SKSUBEZJ1
Feature update
|
11 | SKC | 17 |
2026-10-06 | Download |
|
A556SKSSBDZI1
Security update
|
11 | SKC | 16 |
2026-09-07 | Download |
|
A556SKSSADZH3
Security update
|
10 | SKC | 16 |
2026-08-21 | Download |
|
A556SKSS9DZG1
Security update
|
9 | SKC | 16 |
2026-07-06 | Download |
|
A556SKSS8DZF2
Security update
|
8 | SKC | 16 |
2026-06-09 | Download |
|
A556SKSU7DZE5
Feature update
|
7 | SKC | 16 |
2026-05-13 | Download |
|
A556SKSS7CZC2
Security update
|
7 | SKC | 16 |
2026-04-09 | Download |
|
A556SKSS6CZC1
Security update
|
6 | SKC | 16 |
2026-03-26 | Download |
|
A556SKSS6CZB2
Security update
|
6 | SKC | 16 |
2026-02-26 | Download |
|
A556SKSS6CYL2
Security update
|
6 | SKC | 16 |
2026-01-07 | Download |
|
A556SKSS6CYL1
Security update
|
6 | SKC | 16 |
2025-12-10 | Download |
|
A556SKSS6CYK3
Security update
|
6 | SKC | 16 |
2025-11-19 | Download |
|
A556SKSS6CYJ3
Security update
|
6 | SKC | 16 |
2025-10-24 | Download |
|
A556SKSU6CYI6
Feature update
|
6 | SKC | 16 |
2025-09-29 | Download |
|
A556SKSS6BYH1
Security update
|
6 | SKC | 15 |
2025-08-13 | Download |
|
A556SKSS6BYG1
Security update
|
6 | SKC | 15 |
2025-07-16 | Download |
|
A556SKSU5BYF2
Feature update
|
5 | SKC | 15 |
2025-06-19 | Download |
|
A556SKSU4BYD9
Feature update
|
4 | SKC | 15 |
2025-05-07 | Download |
|
A556SKSS4AYC5
Security update
|
4 | SKC | 14 |
2025-04-03 | Download |
|
A556SKSS3AYB6
Security update
|
3 | SKC | 14 |
2025-03-06 | Download |
|
A556SKSS3AYB1
Security update
|
3 | SKC | 14 |
2025-02-13 | Download |
How to Flash SM-A556S Firmware
Put the Samsung Galaxy Quantum5 into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with Bit 11 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.