Samsung Galaxy A15 (SM-A155M) Firmware Overview
What is the latest SM-A155M firmware?
A155MUBUCFZJ4, released October 21, 2026 with Android 17. It is a feature update on bootloader binary 12. The archive holds 20 official builds across 20 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 1 of 20 regions already have a build from that month; the rest usually follow within a few weeks.
Which Android versions did it get?
The SM-A155M builds in the archive run Android 16 to 17. The earliest build we have for each version:
- Android 17: A155MUBUCFZJ4 (Oct 2026), 1 build in total
- Android 16: A155MUBSCEZH3 (Sep 2026), 19 builds in total
Can I downgrade the SM-A155M firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 12:
- Binary 12 — since Aug 2026
All SM-A155M firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
A155MUBUCFZJ4
Feature update
|
12 | TPA | 17 |
2026-10-21 | Download |
|
A155MUBSCEZH3
Security update
|
12 | PGU | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | SAM | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | UPO | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | GTO | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | BVO | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | CHO | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | CGU | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | COB | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | COL | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | COM | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | COO | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | CTP | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | ECO | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | EON | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | MXO | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | IUS | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | EBE | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | PEO | 16 |
2026-09-04 | Download |
|
A155MUBSCEZH3
Security update
|
12 | PET | 16 |
2026-09-04 | Download |
Latest SM-A155M 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 |
|---|---|---|---|---|
| BVO | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| CGU | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| CHO | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| COB | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| COL | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| COM | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| COO | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| CTP | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| EBE | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| ECO | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| EON | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| GTO | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| IUS | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| MXO | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| PEO | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| PET | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| PGU | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| SAM | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
| TPA | A155MUBUCFZJ4 | 12 | 17 | 2026-10-21 |
| UPO | A155MUBSCEZH3 | 12 | 16 | 2026-09-04 |
How to Flash SM-A155M 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 12 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.