Samsung Galaxy A15 (SM-A155N) Firmware Overview
What is the latest SM-A155N firmware?
A155NKSUBEZJ6, released October 22, 2026 with Android 17. It is a feature update on bootloader binary 11. The archive holds 20 official builds across 4 regions (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy A15 still getting updates?
Yes. The newest build is from October 2026, and 4 of 4 regions already have a build from that month; the rest usually follow within a few weeks.
Which Android versions did it get?
The SM-A155N builds in the archive run Android 16 to 17. The earliest build we have for each version:
- Android 17: A155NKSUBEZJ6 (Oct 2026), 4 builds in total
- Android 16: A155NKSS9CZB4 (Mar 2026), 16 builds in total
Can I downgrade the SM-A155N firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 9 to 11:
- Binary 11 — since Aug 2026
- Binary 10 — since Jul 2026
- Binary 9 — since Feb 2026
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-A155N firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
A155NKSUBEZJ6
Feature update
|
11 | LUC | 17 |
2026-10-22 | Download |
|
A155NKSUBEZJ6
Feature update
|
11 | KTC | 17 |
2026-10-22 | Download |
|
A155NKSUBEZJ6
Feature update
|
11 | SKC | 17 |
2026-10-22 | Download |
|
A155NKSUBEZJ6
Feature update
|
11 | KOO | 17 |
2026-10-22 | Download |
|
A155NKSSBDZH6
Security update
|
11 | LUC | 16 |
2026-08-25 | Download |
|
A155NKSSBDZH6
Security update
|
11 | KOO | 16 |
2026-08-25 | Download |
|
A155NKSSBDZH6
Security update
|
11 | KTC | 16 |
2026-08-25 | Download |
|
A155NKSSBDZH6
Security update
|
11 | SKC | 16 |
2026-08-25 | Download |
|
A155NKSSADZG1
Security update
|
10 | KOO | 16 |
2026-07-14 | Download |
|
A155NKSSADZG1
Security update
|
10 | KTC | 16 |
2026-07-14 | Download |
|
A155NKSSADZG1
Security update
|
10 | SKC | 16 |
2026-07-14 | Download |
|
A155NKSSADZG1
Security update
|
10 | LUC | 16 |
2026-07-14 | Download |
|
A155NKSU9DZF1
Feature update
|
9 | KTC | 16 |
2026-06-10 | Download |
|
A155NKSU9DZF1
Feature update
|
9 | KOO | 16 |
2026-06-10 | Download |
|
A155NKSU9DZF1
Feature update
|
9 | LUC | 16 |
2026-06-10 | Download |
|
A155NKSU9DZF1
Feature update
|
9 | SKC | 16 |
2026-06-10 | Download |
|
A155NKSS9CZB4
Security update
|
9 | SKC | 16 |
2026-03-05 | Download |
|
A155NKSS9CZB4
Security update
|
9 | LUC | 16 |
2026-03-05 | Download |
|
A155NKSS9CZB4
Security update
|
9 | KTC | 16 |
2026-03-05 | Download |
|
A155NKSS9CZB4
Security update
|
9 | KOO | 16 |
2026-03-05 | Download |
Latest SM-A155N Firmware by Region
The newest build for each region (CSC) code. Not sure which region your phone uses? See the CSC code guide.
| Region | Latest build | Bit | Android | Date |
|---|---|---|---|---|
| KOO | A155NKSUBEZJ6 | 11 | 17 | 2026-10-22 |
| KTC | A155NKSUBEZJ6 | 11 | 17 | 2026-10-22 |
| LUC | A155NKSUBEZJ6 | 11 | 17 | 2026-10-22 |
| SKC | A155NKSUBEZJ6 | 11 | 17 | 2026-10-22 |
How to Flash SM-A155N Firmware
Put the Samsung Galaxy A15 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.