Galaxy A16 5G SM-A166P firmware
The latest stable build is A166PXXS9DZG1 (Android 16, security update), first released on Jul 15, 2026 – 114 days ago. Samsung has published 18 stable builds for this model since Sep 30, 2024: 11 security and 7 feature updates, from Android 14 to Android 16. The current bootloader (binary) version is 9. A device on bit 9 only accepts firmware with bit 9 or higher – see downgrading and the bootloader bit.
- Latest build
A166PXXS9DZG1- Released
- Jul 15, 2026
- Android
- Android 16
- Bootloader bit
- 9
- Regions
- 26
- Stable builds
- 18
Latest firmware by region (CSC)
Samsung builds firmware per region code (CSC). Pick the code that matches your device – it is shown under Settings › About phone › Software information › Service provider software version. Follow a code for its complete history.
| CSC | Region | Latest build | Android | Released | Builds |
|---|---|---|---|---|---|
ACR | Ghana | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
AFR | Africa | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
BKD | Bangladesh | A166PXXS9DZG1 | Android 16 | Jul 20, 2026 | 14 |
BNG | Belgium | A166PXXS9DZG1 | Android 16 | Jul 20, 2026 | 13 |
DKR | Senegal | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
ECT | Nigeria | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
GLB | Philippines (Globe) | A166PXXS9DZG1 | Android 16 | Jul 15, 2026 | 14 |
INS | India | A166PXXS9DZG1 | Android 16 | Jul 20, 2026 | 18 |
MM1 | Singapore (M1) | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
NPB | Nepal | A166PXXS9DZG1 | Android 16 | Jul 20, 2026 | 14 |
OPS | Australia (Optus) | A166PXXS9DZG1 | Android 16 | Jul 20, 2026 | 14 |
SIN | Singapore (Singtel) | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
SLK | Sri Lanka | A166PXXS9DZG1 | Android 16 | Jul 20, 2026 | 14 |
STH | Singapore (StarHub) | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
TEL | Australia (Telstra) | A166PXXS9DZG1 | Android 16 | Jul 20, 2026 | 14 |
THL | Thailand | A166PXXS9DZG1 | Android 16 | Jul 15, 2026 | 14 |
VAU | Australia (Vodafone) | A166PXXS9DZG1 | Android 16 | Jul 20, 2026 | 14 |
XFA | South Africa | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
XFV | South Africa (Vodacom) | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
XID | Indonesia | A166PXXS9DZG1 | Android 16 | Jul 15, 2026 | 14 |
XME | Malaysia | A166PXXS9DZG1 | Android 16 | Jul 15, 2026 | 14 |
XNZ | New Zealand | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 15 |
XSA | Australia | A166PXXS9DZG1 | Android 16 | Jul 20, 2026 | 14 |
XSP | Singapore | A166PXXS9DZG1 | Android 16 | Jul 19, 2026 | 14 |
XTC | Philippines | A166PXXS9DZG1 | Android 16 | Jul 15, 2026 | 14 |
XXV | Vietnam | A166PXXS9DZG1 | Android 16 | Jul 15, 2026 | 14 |
Firmware history (18 builds)
Every stable build (PDA version) Samsung has published for the SM-A166P, newest first. “” is the earliest date the build appeared on Samsung's servers in any region. “” means Samsung no longer serves the file for that build.
| Build (PDA) | Released | Android | Type | Bit | Regions | File |
|---|---|---|---|---|---|---|
A166PXXS9DZG1 | Jul 15, 2026 | Android 16 | Security | 9 | 26 | on server |
A166PXXS8DZF2 | Jun 17, 2026 | Android 16 | Security | 8 | 26 | on server |
A166PXXU7DZE2 | May 24, 2026 | Android 16 | Feature | 7 | 26 | on server |
A166PXXS7CZD2 | Apr 19, 2026 | Android 16 | Security | 7 | 26 | on server |
A166PXXS7CZB2 | Mar 4, 2026 | Android 16 | Security | 7 | 26 | on server |
A166PXXS6CZA1 | Jan 19, 2026 | Android 16 | Security | 6 | 26 | on server |
A166PXXS5CYJ1 | Oct 28, 2025 | Android 16 | Security | 5 | 26 | on server |
A166PXXU5CYI8 | Oct 5, 2025 | Android 16 | Feature | 5 | 26 | on server |
A166PXXS5BYH6 | Aug 18, 2025 | Android 15 | Security | 5 | 1 | on server |
A166PXXS5BYG2 | Jul 27, 2025 | Android 15 | Security | 5 | 5 | on server |
A166PXXS5BYG1 | Jul 22, 2025 | Android 15 | Security | 5 | 21 | on server |
A166PXXU4BYE6 | May 28, 2025 | Android 15 | Feature | 4 | 5 | on server |
A166PXXU4BYE5 | May 22, 2025 | Android 15 | Feature | 4 | 21 | on server |
A166PXXS4AYC1 | Apr 8, 2025 | Android 14 | Security | 4 | 26 | on server |
A166PXXS3AYA4 | Jan 19, 2025 | Android 14 | Security | 3 | 26 | on server |
A166PXXU2AXL2 | Dec 11, 2024 | Android 14 | Feature | 2 | 26 | on server |
A166PXXU1AXIC | Oct 13, 2024 | Android 14 | Feature | 1 | 25 | on server |
A166PXXU1AXIB | Sep 30, 2024 | Android 14 | Feature | 1 | 1 | on server |
Beta and test builds
Samsung's servers also list 3 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.
| Build | Listed | File |
|---|---|---|
A166PXXU9ZZJ8 | Oct 19, 2026 | pulled |
A166PXXU9ZZJ1 | Oct 5, 2026 | pulled |
A166PXXU9ZZIE | Sep 27, 2026 | pulled |
How to download SM-A166P firmware
We do not host firmware. Download it directly from Samsung's servers with a free open-source tool, for example samloader:
samloader download -m SM-A166P -r INSReplace INS with your region code. Step-by-step instructions, including a graphical alternative:
How to download Samsung firmware.
Changelog and security patch level
Samsung publishes the release notes for each update, including the security patch level, on its own site. They are listed per region – for example SM-A166P / INS release notes on doc.samsungmobile.com. Each region page here links to the notes for that code.