A166BXXU8DZE9 – Galaxy A16 5G firmware

Build A166BXXU8DZE9 is a feature update for the Galaxy A16 5G (SM-A166B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 3, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 8, so downgrading to the previous build A166BXXS8CZDG is still possible. Samsung still serves this file.

Model
SM-A166B
Android
Android 16
Type
Feature
Bootloader bit
8
First released
Jun 3, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received A166BXXU8DZE9, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BOGFrance (Bouygues)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
EUXEurope (Multi-CSC)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
EUYEurope (Multi-CSC)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
MEOPortugal (MEO)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
MOBAustria (A1)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
MOTSlovenia (Telekom)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
MSRSerbiaJun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
PLSPoland (Plus)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
PRTPoland (Play)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
SFRFrance (SFR)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
SIMSlovenia (A1)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
TOPSerbia/MontenegroJun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
TURTurkeyJun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9
VIPCroatia (A1)Jun 3, 2026day 0A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9

Download and release notes

samloader download -m SM-A166B -r EUX -v A166BXXU8DZE9/A166BOXM8DZE9/A166BXXU8DZE9

Samsung's release notes and security patch level for this update: SM-A166B / EUX on doc.samsungmobile.com. What each part of the build number means: decode A166BXXU8DZE9.