A166MUBU8DZE9 – Galaxy A16 5G firmware

Build A166MUBU8DZE9 is a feature update for the Galaxy A16 5G (SM-A166M) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 8, 2026 (method) and has reached 34 regions so far. It keeps bootloader bit 8, so downgrading to the previous build A166MUBS8CZDG is still possible. Samsung still serves this file.

Model
SM-A166M
Android
Android 16
Type
Feature
Bootloader bit
8
First released
Jun 8, 2026
Regions
34

Rollout timeline by region

The date each region code (CSC) first received A166MUBU8DZE9, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
TPAPanamaJun 8, 2026day 0A166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
IUSMexico (AT&T)Jun 8, 2026day 0A166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
MXOMexicoJun 8, 2026day 0A166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
TCEMexico (Telcel)Jun 8, 2026day 0A166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
TMMMyanmarJun 8, 2026day 0A166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
CGUGuatemala (Claro)Jun 10, 2026+2 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
GTOGuatemalaJun 11, 2026+3 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
AROArgentinaJun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
CDRDominican RepublicJun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
COMColombia (Claro)Jun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
CTIArgentina (Claro)Jun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
PGUGuatemalaJun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
PSNArgentina (Personal)Jun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
UFNArgentina (Movistar)Jun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
ZTABrazil (Claro)Jun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
ZTMBrazil (TIM)Jun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
ZTOBrazilJun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
ZVVBrazil (Vivo)Jun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
COBColombia (Movistar)Jun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
COLColombiaJun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
COOColombiaJun 15, 2026+7 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
CRCCosta RicaJun 16, 2026+8 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
DORDominican RepublicJun 16, 2026+8 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
GLONigeria (Glo)Jun 16, 2026+8 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
PEOPeruJun 17, 2026+9 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
PETPeru (Movistar)Jun 17, 2026+9 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
PNTPanamaJun 17, 2026+9 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
SAMOceaniaJun 17, 2026+9 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
UYOUruguayJun 17, 2026+9 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
CHEChile (Entel)Jun 18, 2026+10 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
CHLChile (Claro)Jun 18, 2026+10 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
CHOChileJun 18, 2026+10 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
CHTChile (Movistar)Jun 18, 2026+10 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9
CHXChileJun 18, 2026+10 daysA166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9

Download and release notes

samloader download -m SM-A166M -r TPA -v A166MUBU8DZE9/A166MOWO8DZE9/A166MUBU8DZE9

Samsung's release notes and security patch level for this update: SM-A166M / TPA on doc.samsungmobile.com. What each part of the build number means: decode A166MUBU8DZE9.