Samsung Galaxy M15 5G (SM-M156B) Firmware Overview
What is the latest SM-M156B firmware?
M156BXXSCDZJ5, released October 15, 2026 with Android 16. It is a security update on bootloader binary 12. The archive holds 109 official builds across 17 regions (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy M15 5G still getting updates?
Yes. The newest build is from October 2026, and 17 of 17 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-M156B firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 7 to 12:
- Binary 12 — since Oct 2026
- Binary 11 — since Jul 2026
- Binary 10 — since May 2026
- Binary 9 — since Feb 2026
- Binary 8 — since Jan 2026
- Binary 7 — since Oct 2025
A phone already on binary 12 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 12 build. How to read a build number.
All SM-M156B firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
M156BXXSCDZJ5
Security update
|
12 | ZTO | 16 |
2026-10-15 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | COO | 16 |
2026-10-15 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | MXD | 16 |
2026-10-15 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | BKD | 16 |
2026-10-12 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | SLK | 16 |
2026-10-12 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | INS | 16 |
2026-10-12 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | NPB | 16 |
2026-10-12 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | MID | 16 |
2026-10-09 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | XXV | 16 |
2026-10-09 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | EUX | 16 |
2026-10-09 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | EGY | 16 |
2026-10-09 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | TUR | 16 |
2026-10-09 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | SKZ | 16 |
2026-10-09 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | EUY | 16 |
2026-10-09 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | CAU | 16 |
2026-10-09 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | XFA | 16 |
2026-10-09 | Download |
|
M156BXXSCDZJ5
Security update
|
12 | XID | 16 |
2026-10-09 | Download |
|
M156BXXSBDZG5
Security update
|
11 | COO | 16 |
2026-07-18 | Download |
|
M156BXXSBDZG5
Security update
|
11 | MXD | 16 |
2026-07-18 | Download |
|
M156BXXSBDZG5
Security update
|
11 | ZTO | 16 |
2026-07-18 | Download |
|
M156BXXSBDZG5
Security update
|
11 | NPB | 16 |
2026-07-16 | Download |
|
M156BXXSBDZG5
Security update
|
11 | INS | 16 |
2026-07-16 | Download |
|
M156BXXSBDZG5
Security update
|
11 | BKD | 16 |
2026-07-16 | Download |
|
M156BXXSBDZG5
Security update
|
11 | SLK | 16 |
2026-07-16 | Download |
|
M156BXXSBDZG5
Security update
|
11 | XXV | 16 |
2026-07-15 | Download |
|
M156BXXSBDZG5
Security update
|
11 | TUR | 16 |
2026-07-15 | Download |
|
M156BXXSBDZG5
Security update
|
11 | SKZ | 16 |
2026-07-15 | Download |
|
M156BXXSBDZG5
Security update
|
11 | EUY | 16 |
2026-07-15 | Download |
|
M156BXXSBDZG5
Security update
|
11 | CAU | 16 |
2026-07-15 | Download |
|
M156BXXSBDZG5
Security update
|
11 | XFA | 16 |
2026-07-15 | Download |
|
M156BXXSBDZG5
Security update
|
11 | EGY | 16 |
2026-07-15 | Download |
|
M156BXXSBDZG5
Security update
|
11 | MID | 16 |
2026-07-15 | Download |
|
M156BXXSBDZG5
Security update
|
11 | EUX | 16 |
2026-07-15 | Download |
|
M156BXXSBDZG5
Security update
|
11 | XID | 16 |
2026-07-15 | Download |
|
M156BXXSADZF2
Security update
|
10 | XID | 16 |
2026-06-23 | Download |
|
M156BXXSADZF2
Security update
|
10 | ZTO | 16 |
2026-06-23 | Download |
|
M156BXXSADZF2
Security update
|
10 | MXD | 16 |
2026-06-23 | Download |
|
M156BXXSADZF2
Security update
|
10 | COO | 16 |
2026-06-23 | Download |
|
M156BXXSADZF2
Security update
|
10 | XXV | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | EUY | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | SKZ | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | CAU | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | TUR | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | XFA | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | EGY | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | EUX | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | MID | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | NPB | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | INS | 16 |
2026-06-22 | Download |
|
M156BXXSADZF2
Security update
|
10 | SLK | 16 |
2026-06-22 | Download |
|
M156BXXUADZE7
Feature update
|
10 | ZTO | 16 |
2026-05-22 | Download |
|
M156BXXUADZE7
Feature update
|
10 | COO | 16 |
2026-05-22 | Download |
|
M156BXXUADZE7
Feature update
|
10 | MXD | 16 |
2026-05-22 | Download |
|
M156BXXUADZE7
Feature update
|
10 | CAU | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | SKZ | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | XFA | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | MID | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | XXV | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | EGY | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | TUR | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | EUX | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | NPB | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | INS | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | SLK | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | BKD | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | EUY | 16 |
2026-05-21 | Download |
|
M156BXXUADZE7
Feature update
|
10 | XID | 16 |
2026-05-21 | Download |
|
M156BXXSACZE1
Security update
|
10 | MXD | 16 |
2026-05-07 | Download |
|
M156BXXSACZE1
Security update
|
10 | COO | 16 |
2026-05-07 | Download |
|
M156BXXSACZE1
Security update
|
10 | EUX | 16 |
2026-05-07 | Download |
|
M156BXXSACZE1
Security update
|
10 | XXV | 16 |
2026-05-07 | Download |
|
M156BXXSACZE1
Security update
|
10 | ZTO | 16 |
2026-05-07 | Download |
|
M156BXXS9CZB3
Security update
|
9 | BKD | 16 |
2026-03-11 | Download |
|
M156BXXS9CZB3
Security update
|
9 | NPB | 16 |
2026-03-11 | Download |
|
M156BXXS9CZB3
Security update
|
9 | INS | 16 |
2026-03-11 | Download |
|
M156BXXS9CZB3
Security update
|
9 | SLK | 16 |
2026-03-11 | Download |
|
M156BXXS9CZB3
Security update
|
9 | COO | 16 |
2026-03-10 | Download |
|
M156BXXS9CZB3
Security update
|
9 | MXD | 16 |
2026-03-10 | Download |
|
M156BXXS9CZB3
Security update
|
9 | ZTO | 16 |
2026-03-10 | Download |
|
M156BXXS9CZB3
Security update
|
9 | XXV | 16 |
2026-03-09 | Download |
|
M156BXXS9CZB3
Security update
|
9 | EUY | 16 |
2026-03-09 | Download |
|
M156BXXS9CZB3
Security update
|
9 | EUX | 16 |
2026-03-09 | Download |
|
M156BXXS9CZB3
Security update
|
9 | SKZ | 16 |
2026-03-09 | Download |
|
M156BXXS9CZB3
Security update
|
9 | CAU | 16 |
2026-03-09 | Download |
|
M156BXXS9CZB3
Security update
|
9 | XID | 16 |
2026-03-09 | Download |
|
M156BXXS9CZB3
Security update
|
9 | EGY | 16 |
2026-03-09 | Download |
|
M156BXXS9CZB3
Security update
|
9 | MID | 16 |
2026-03-09 | Download |
|
M156BXXS9CZB3
Security update
|
9 | XFA | 16 |
2026-03-09 | Download |
|
M156BXXS9CZB3
Security update
|
9 | TUR | 16 |
2026-03-09 | Download |
|
M156BXXS8CZA3
Security update
|
8 | NPB | 16 |
2026-01-28 | Download |
|
M156BXXS8CZA3
Security update
|
8 | BKD | 16 |
2026-01-28 | Download |
|
M156BXXS8CZA3
Security update
|
8 | INS | 16 |
2026-01-28 | Download |
|
M156BXXS8CZA3
Security update
|
8 | SLK | 16 |
2026-01-28 | Download |
|
M156BXXS8CZA3
Security update
|
8 | COO | 16 |
2026-01-23 | Download |
|
M156BXXS8CZA3
Security update
|
8 | MXD | 16 |
2026-01-23 | Download |
|
M156BXXS8CZA3
Security update
|
8 | ZTO | 16 |
2026-01-23 | Download |
|
M156BXXS8CZA3
Security update
|
8 | CAU | 16 |
2026-01-22 | Download |
|
M156BXXS8CZA3
Security update
|
8 | EUX | 16 |
2026-01-22 | Download |
|
M156BXXS8CZA3
Security update
|
8 | SKZ | 16 |
2026-01-22 | Download |
|
M156BXXS8CZA3
Security update
|
8 | EUY | 16 |
2026-01-22 | Download |
|
M156BXXS8CZA3
Security update
|
8 | XID | 16 |
2026-01-22 | Download |
|
M156BXXS8CZA3
Security update
|
8 | XXV | 16 |
2026-01-22 | Download |
|
M156BXXS8CZA3
Security update
|
8 | TUR | 16 |
2026-01-22 | Download |
|
M156BXXS8CZA3
Security update
|
8 | MID | 16 |
2026-01-22 | Download |
|
M156BXXS8CZA3
Security update
|
8 | EGY | 16 |
2026-01-22 | Download |
|
M156BXXS8CZA3
Security update
|
8 | XFA | 16 |
2026-01-22 | Download |
|
M156BXXU7CYJ5
Feature update
|
7 | BKD | 16 |
2025-11-26 | Download |
|
M156BXXU7CYJ5
Feature update
|
7 | SLK | 16 |
2025-11-03 | Download |
|
M156BXXU7CYJ5
Feature update
|
7 | NPB | 16 |
2025-11-03 | Download |
Latest SM-M156B 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 |
|---|---|---|---|---|
| BKD | M156BXXSCDZJ5 | 12 | 16 | 2026-10-12 |
| CAU | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| COO | M156BXXSCDZJ5 | 12 | 16 | 2026-10-15 |
| EGY | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| EUX | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| EUY | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| INS | M156BXXSCDZJ5 | 12 | 16 | 2026-10-12 |
| MID | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| MXD | M156BXXSCDZJ5 | 12 | 16 | 2026-10-15 |
| NPB | M156BXXSCDZJ5 | 12 | 16 | 2026-10-12 |
| SKZ | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| SLK | M156BXXSCDZJ5 | 12 | 16 | 2026-10-12 |
| TUR | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| XFA | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| XID | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| XXV | M156BXXSCDZJ5 | 12 | 16 | 2026-10-09 |
| ZTO | M156BXXSCDZJ5 | 12 | 16 | 2026-10-15 |
How to Flash SM-M156B Firmware
Put the Samsung Galaxy M15 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 12 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.