A346MUBSFEZC7 – Galaxy A34 5G firmware

Build A346MUBSFEZC7 is a security update for the Galaxy A34 5G (SM-A346M) on Android 16 (One UI 8). It first appeared on Samsung's servers on Apr 22, 2026 (method) and has reached 40 regions so far. It raises the bootloader bit from 14 to 15: once installed, the device no longer accepts firmware with bit 14 or lower, so a downgrade to A346MUBSEEZB6 is blocked. Samsung still serves this file.

Model
SM-A346M
Android
Android 16
Type
Security
Bootloader bit
15
First released
Apr 22, 2026
Regions
40

Rollout timeline by region

The date each region code (CSC) first received A346MUBSFEZC7, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
AROArgentinaApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
BVOBoliviaApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
CDRDominican RepublicApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
COMColombia (Claro)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
CTIArgentina (Claro)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
IUSMexico (AT&T)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
MXOMexicoApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
PSNArgentina (Personal)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
TCEMexico (Telcel)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
TGPParaguayApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
TMMMyanmarApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
TPAPanamaApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
UFNArgentina (Movistar)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
UPOUruguayApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
UYOUruguayApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
ZTABrazil (Claro)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
ZTMBrazil (TIM)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
ZTOBrazilApr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
ZVVBrazil (Vivo)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
CGUGuatemala (Claro)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
COBColombia (Movistar)Apr 22, 2026day 0A346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
COLColombiaApr 22, 2026day 0A346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
COOColombiaApr 22, 2026day 0A346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
EBEEcuadorApr 22, 2026day 0A346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
ECOEcuadorApr 22, 2026day 0A346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
PGUGuatemalaApr 22, 2026day 0A346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
GTOGuatemalaApr 23, 2026+1 dayA346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7
PEOPeruApr 23, 2026+1 dayA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
PETPeru (Movistar)Apr 23, 2026+1 dayA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
PNTPanamaApr 23, 2026+1 dayA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
SAMOceaniaApr 23, 2026+1 dayA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
CHEChile (Entel)Apr 27, 2026+5 daysA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
CHLChile (Claro)Apr 27, 2026+5 daysA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
CHOChileApr 27, 2026+5 daysA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
CHTChile (Movistar)Apr 27, 2026+5 daysA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
CHXChileApr 27, 2026+5 daysA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
CRCCosta RicaApr 29, 2026+7 daysA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
DORDominican RepublicApr 29, 2026+7 daysA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
GLONigeria (Glo)Apr 29, 2026+7 daysA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7
NBSLatin America (open market)Apr 29, 2026+7 daysA346MUBSFEZC7/A346MOWBFEZC7/A346MUBSFEZC7

Download and release notes

samloader download -m SM-A346M -r ARO -v A346MUBSFEZC7/A346MOWOFEZC7/A346MUBSFEZC7

Samsung's release notes and security patch level for this update: SM-A346M / ARO on doc.samsungmobile.com. What each part of the build number means: decode A346MUBSFEZC7.