Samsung Galaxy A16 5G (SM-S166V) Firmware Overview
What is the latest SM-S166V firmware?
S166VUDSADZI2, released September 20, 2026 with Android 16. It is a security update on bootloader binary 10. The archive holds 20 official builds across 2 regions (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy A16 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.
Can I downgrade the SM-S166V 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 10:
- Binary 10 — since Sep 2026
- Binary 9 — since Aug 2026
- Binary 8 — since Jul 2026
- Binary 7 — since Apr 2026
- Binary 6 — since Feb 2026
- Binary 5 — since Jan 2026
- Binary 4 — since Dec 2025
- Binary 3 — since Sep 2025
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-S166V firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
S166VUDSADZI2
Security update
|
10 | TFN | 16 |
2026-09-20 | Download |
|
S166VUDSADZI2
Security update
|
10 | TFV | 16 |
2026-09-20 | Download |
|
S166VUDS9DZH1
Security update
|
9 | TFN | 16 |
2026-08-27 | Download |
|
S166VUDS9DZH1
Security update
|
9 | TFV | 16 |
2026-08-27 | Download |
|
S166VUDS8DZG1
Security update
|
8 | TFN | 16 |
2026-07-17 | Download |
|
S166VUDS8DZG1
Security update
|
8 | TFV | 16 |
2026-07-17 | Download |
|
S166VUDS7CZDG
Security update
|
7 | TFV | 16 |
2026-05-14 | Download |
|
S166VUDS7CZDG
Security update
|
7 | TFN | 16 |
2026-05-14 | Download |
|
S166VUDU7DZE9
Feature update
|
7 | TFV | 16 |
2026-05-14 | Download |
|
S166VUDU7DZE9
Feature update
|
7 | TFN | 16 |
2026-05-14 | Download |
|
S166VUDS6CZB6
Security update
|
6 | TFV | 16 |
2026-03-16 | Download |
|
S166VUDS6CZB6
Security update
|
6 | TFN | 16 |
2026-03-16 | Download |
|
S166VUDS5CZA9
Security update
|
5 | TFN | 16 |
2026-02-20 | Download |
|
S166VUDS5CZA9
Security update
|
5 | TFV | 16 |
2026-02-19 | Download |
|
S166VUDS4CYL1
Security update
|
4 | TFN | 16 |
2025-12-10 | Download |
|
S166VUDS4CYL1
Security update
|
4 | TFV | 16 |
2025-12-10 | Download |
|
S166VUDS3CYJ1
Security update
|
3 | TFN | 16 |
2025-10-24 | Download |
|
S166VUDS3CYJ1
Security update
|
3 | TFV | 16 |
2025-10-24 | Download |
|
S166VUDU3CYIE
Feature update
|
3 | TFN | 16 |
2025-10-01 | Download |
|
S166VUDU3CYIE
Feature update
|
3 | TFV | 16 |
2025-10-01 | Download |
Latest SM-S166V 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 |
|---|---|---|---|---|
| TFN | S166VUDSADZI2 | 10 | 16 | 2026-09-20 |
| TFV | S166VUDSADZI2 | 10 | 16 | 2026-09-20 |
How to Flash SM-S166V Firmware
Put the Samsung Galaxy A16 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 10 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.