Samsung Galaxy A15 5G (SM-A156U1) Firmware Overview
What is the latest SM-A156U1 firmware?
A156U1UESDEZJ6, released October 10, 2026 with Android 16. It is a security update on bootloader binary 13. The archive holds 40 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 5G still getting updates?
Yes. The newest build is from October 2026, and 20 of 20 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-A156U1 firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 12 to 13:
- Binary 13 — since Oct 2026
- Binary 12 — since Jul 2026
A phone already on binary 13 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 13 build. How to read a build number.
All SM-A156U1 firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
A156U1UESDEZJ6
Security update
|
13 | PCT | 16 |
2026-10-10 | Download |
|
A156U1UESDEZJ7
Security update
|
13 | LLA | 16 |
2026-10-10 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | ACG | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | ATC | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | ATT | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | CHA | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | TMK | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | TFV | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | TMB | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | VZW | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | XAG | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | XAA | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | XAR | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | DSA | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | LRA | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | USC | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | DSH | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | CCT | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | AIO | 16 |
2026-10-09 | Download |
|
A156U1UESDEZJ6
Security update
|
13 | FKR | 16 |
2026-10-09 | Download |
|
A156U1UESCEZI1
Security update
|
12 | PCT | 16 |
2026-09-15 | Download |
|
A156U1UESCEZG2
Security update
|
12 | LLA | 16 |
2026-07-25 | Download |
|
A156U1UESCEZG1
Security update
|
12 | PCT | 16 |
2026-07-23 | Download |
|
A156U1UESCEZG1
Security update
|
12 | USC | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | LRA | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | DSA | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | XAR | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | XAA | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | XAG | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | VZW | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | DSH | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | CCT | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | AIO | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | TMB | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | TFV | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | ACG | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | ATC | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | ATT | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | CHA | 16 |
2026-07-17 | Download |
|
A156U1UESCEZG1
Security update
|
12 | TMK | 16 |
2026-07-17 | Download |
Latest SM-A156U1 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 |
|---|---|---|---|---|
| ACG | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| AIO | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| ATC | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| ATT | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| CCT | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| CHA | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| DSA | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| DSH | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| FKR | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| LLA | A156U1UESDEZJ7 | 13 | 16 | 2026-10-10 |
| LRA | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| PCT | A156U1UESDEZJ6 | 13 | 16 | 2026-10-10 |
| TFV | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| TMB | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| TMK | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| USC | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| VZW | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| XAA | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| XAG | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
| XAR | A156U1UESDEZJ6 | 13 | 16 | 2026-10-09 |
How to Flash SM-A156U1 Firmware
Put the Samsung Galaxy A15 5G 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 13 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.