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). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
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.