Samsung SM-A166B Firmware Overview
What is the latest SM-A166B firmware?
A166BXXSADZH1, released August 21, 2026 with Android 16. It is a security update on bootloader binary 10. The archive holds 20 official builds across 15 regions (CSC).
Is the Samsung SM-A166B still getting updates?
Yes. The newest build is from August 2026, and 15 of 15 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-A166B 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 10:
- Binary 10 — since Aug 2026
- Binary 9 — since Jul 2026
A phone already on binary 10 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 10 build. How to read a build number.
All SM-A166B firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
A166BXXSADZH1
Security update
|
10 | PRT | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | VIP | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | SIM | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | MEO | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | TOP | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | MOT | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | MSR | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | EUY | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | EUX | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | SFR | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | TUR | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | MOB | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | BOG | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | PLS | 16 |
2026-08-21 | Download |
|
A166BXXSADZH1
Security update
|
10 | MET | 16 |
2026-08-21 | Download |
|
A166BXXS9DZG1
Security update
|
9 | TUR | 16 |
2026-07-10 | Download |
|
A166BXXS9DZG1
Security update
|
9 | SIM | 16 |
2026-07-10 | Download |
|
A166BXXS9DZG1
Security update
|
9 | VIP | 16 |
2026-07-10 | Download |
|
A166BXXS9DZG1
Security update
|
9 | MEO | 16 |
2026-07-10 | Download |
|
A166BXXS9DZG1
Security update
|
9 | MOB | 16 |
2026-07-10 | Download |
Latest SM-A166B 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 |
|---|---|---|---|---|
| BOG | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| EUX | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| EUY | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| MEO | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| MET | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| MOB | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| MOT | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| MSR | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| PLS | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| PRT | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| SFR | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| SIM | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| TOP | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| TUR | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
| VIP | A166BXXSADZH1 | 10 | 16 | 2026-08-21 |
How to Flash SM-A166B Firmware
Put the Samsung SM-A166B 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 10 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.