Galaxy A16 5G SM-A166B firmware

The latest stable build is A166BXXUAEZJ5 (Android 17, feature update), first released on Oct 26, 2026 – 11 days ago. Samsung has published 21 stable builds for this model since Oct 14, 2024: 13 security and 8 feature updates, from Android 14 to Android 17. The current bootloader (binary) version is 10. A device on bit 10 only accepts firmware with bit 10 or higher – see downgrading and the bootloader bit.

Latest build
A166BXXUAEZJ5
Released
Oct 26, 2026
Android
Android 17
Bootloader bit
10
Regions
14
Stable builds
21

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.

CSCRegionLatest buildAndroidReleasedBuilds
BOGFrance (Bouygues)A166BXXUAEZJ5Android 17Oct 26, 202619
EUXEurope (Multi-CSC)A166BXXUAEZJ5Android 17Oct 26, 202619
EUYEurope (Multi-CSC)A166BXXUAEZJ5Android 17Oct 26, 202619
MEOPortugal (MEO)A166BXXUAEZJ5Android 17Oct 26, 202619
MOBAustria (A1)A166BXXUAEZJ5Android 17Oct 26, 202619
MOTSlovenia (Telekom)A166BXXUAEZJ5Android 17Oct 26, 202619
MSRSerbiaA166BXXUAEZJ5Android 17Oct 26, 202619
PLSPoland (Plus)A166BXXUAEZJ5Android 17Oct 26, 202619
PRTPoland (Play)A166BXXUAEZJ5Android 17Oct 26, 202619
SFRFrance (SFR)A166BXXUAEZJ5Android 17Oct 26, 202619
SIMSlovenia (A1)A166BXXUAEZJ5Android 17Oct 26, 202619
TOPSerbia/MontenegroA166BXXUAEZJ5Android 17Oct 26, 202619
TURTurkeyA166BXXUAEZJ5Android 17Oct 26, 202615
VIPCroatia (A1)A166BXXUAEZJ5Android 17Oct 26, 202619

Firmware history (21 builds)

Every stable build (PDA version) Samsung has published for the SM-A166B, 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)ReleasedAndroidTypeBitRegionsFile
A166BXXUAEZJ5Oct 26, 2026Android 17Feature1014on server
A166BXXSADZH1Sep 6, 2026Android 16Security1014on server
A166BXXS9DZG1Jul 27, 2026Android 16Security914on server
A166BXXU8DZE9Jun 3, 2026Android 16Feature814on server
A166BXXS8CZDGMay 11, 2026Android 16Security814on server
A166BXXS7CZB6Mar 8, 2026Android 16Security714on server
A166BXXS6CZA8Feb 2, 2026Android 16Security614on server
A166BXXS5CYL1Dec 22, 2025Android 16Security514on server
A166BXXS4CYJ1Oct 29, 2025Android 16Security414on server
A166BXXU4CYI8Oct 7, 2025Android 16Feature414on server
A166BXXS4BYG1Jul 21, 2025Android 15Security414on server
A166BXXU3BYF1Jun 24, 2025Android 15Feature314on server
A166BXXU3BYECJun 11, 2025Android 15Feature314on server
A166BXXS3AYE1Jun 1, 2025Android 14Security313on server
A166BXXS3AYD1Apr 23, 2025Android 14Security31on server
A166BXXS3AYC1Mar 31, 2025Android 14Security313on server
A166BXXU3AYA3Mar 30, 2025Android 14Feature31on server
A166BXXS3AYA2Jan 22, 2025Android 14Security313on server
A166BXXU3AXK3Dec 9, 2024Android 14Feature313on server
A166BXXS2AXI7Oct 20, 2024Android 14Security213on server
A166BXXU1AXI6Oct 14, 2024Android 14Feature113on server

How to download SM-A166B 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-A166B -r EUX

Replace EUX 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-A166B / EUX release notes on doc.samsungmobile.com. Each region page here links to the notes for that code.