Samsung Galaxy M06 5G (SM-M066B) Firmware Overview
What is the latest SM-M066B firmware?
M066BXXS8CZI1, released September 12, 2026 with Android 16. It is a security update on bootloader binary 8. The archive holds 15 official builds across 2 regions (CSC).
Is the Samsung Galaxy M06 5G still getting updates?
Yes. The newest build is from September 2026, and 2 of 2 regions already have a build from that month; the rest usually follow within a few weeks.
Which Android versions did it get?
The SM-M066B builds in the archive run Android 15 to 16. The earliest build we have for each version:
- Android 16: M066BXXU3BYI8 (Oct 2025), 13 builds in total
- Android 15: M066BXXS3AYG1 (Jul 2025), 2 builds in total
Can I downgrade the SM-M066B 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 8:
- Binary 8 — since Sep 2026
- Binary 7 — since Jun 2026
- Binary 6 — since May 2026
- Binary 5 — since Feb 2026
- Binary 4 — since Jan 2026
- Binary 3 — since Jul 2025
A phone already on binary 8 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 8 build. How to read a build number.
All SM-M066B firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
M066BXXS8CZI1
Security update
|
8 | INS | 16 |
2026-09-12 | Download |
|
M066BXXS8CZI1
Security update
|
8 | BNG | 16 |
2026-09-12 | Download |
|
M066BXXS7CZF2
Security update
|
7 | BNG | 16 |
2026-06-10 | Download |
|
M066BXXS7CZF2
Security update
|
7 | INS | 16 |
2026-06-10 | Download |
|
M066BXXU6CZE6
Feature update
|
6 | INS | 16 |
2026-05-19 | Download |
|
M066BXXU6CZE6
Feature update
|
6 | BNG | 16 |
2026-05-19 | Download |
|
M066BXXS6BZE1
Security update
|
6 | INS | 16 |
2026-05-07 | Download |
|
M066BXXS6BZE2
Security update
|
6 | BNG | 16 |
2026-05-07 | Download |
|
M066BXXU5BZC4
Feature update
|
5 | BNG | 16 |
2026-03-31 | Download |
|
M066BXXS5BZB6
Security update
|
5 | INS | 16 |
2026-03-10 | Download |
|
M066BXXS4BZA1
Security update
|
4 | INS | 16 |
2026-02-03 | Download |
|
M066BXXS3BYJ7
Security update
|
3 | INS | 16 |
2025-11-27 | Download |
|
M066BXXU3BYI8
Feature update
|
3 | INS | 16 |
2025-10-16 | Download |
|
M066BXXS3AYI2
Security update
|
3 | INS | 15 |
2025-09-22 | Download |
|
M066BXXS3AYG1
Security update
|
3 | INS | 15 |
2025-07-30 | Download |
Latest SM-M066B 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 |
|---|---|---|---|---|
| BNG | M066BXXS8CZI1 | 8 | 16 | 2026-09-12 |
| INS | M066BXXS8CZI1 | 8 | 16 | 2026-09-12 |
How to Flash SM-M066B Firmware
Put the Samsung Galaxy M06 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 8 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.