Samsung Galaxy A16 5G (SM-A166L) Firmware Overview
What is the latest SM-A166L firmware?
A166LKSU8DZJ5, released October 8, 2026 with Android 17. It is a feature update on bootloader binary 8. The archive holds 11 official builds across 1 region (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 October 2026.
Which Android versions did it get?
The SM-A166L builds in the archive run Android 15 to 17. The earliest build we have for each version:
- Android 17: A166LKSU8DZJ5 (Oct 2026), 1 build in total
- Android 16: A166LKSU3BYI8 (Sep 2025), 7 builds in total
- Android 15: A166LKSU2AYE3 (Jun 2025), 2 builds in total
Can I downgrade the SM-A166L firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 2 to 8:
- Binary 8 — since Aug 2026
- Binary 7 — since Jul 2026
- Binary 6 — since Feb 2026
- Binary 5 — since Jan 2026
- Binary 4 — since Nov 2025
- Binary 3 — since Aug 2025
- Binary 2 — since May 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-A166L firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
A166LKSU8DZJ5
Feature update
|
8 | LUC | 17 |
2026-10-08 | Download |
|
A166LKSS8CZH1
Security update
|
8 | LUC | 16 |
2026-08-21 | Download |
|
A166LKSS7CZG1
Security update
|
7 | LUC | 16 |
2026-07-10 | Download |
|
A166LKSS6BZB7
Security update
|
6 | LUC | 16 |
2026-02-14 | Download |
|
A166LKSS5BZAA
Security update
|
5 | LUC | 16 |
2026-01-20 | Download |
|
A166LKSS4BYL2
Security update
|
4 | LUC | 16 |
2025-12-09 | Download |
|
A166LKSS4BYK3
Security update
|
4 | LUC | 16 |
2025-11-12 | Download |
|
A166LKSU3BYI8
Feature update
|
3 | LUC | 16 |
2025-09-22 | Download |
|
A166LKSS3AYH3
Security update
|
3 | LUC | 15 |
2025-08-06 | Download |
|
A166LKSU2AYE3
Feature update
|
2 | LUC | 15 |
2025-06-02 | Download |
|
A166LKSU6CZE9
Feature update
|
6 | LUC | — |
N/A | Download |
How to Flash SM-A166L 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 8 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.