A346MUBSGFZG4 – Galaxy A34 5G firmware

Build A346MUBSGFZG4 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 Aug 4, 2026 (method) and has reached 40 regions so far. It raises the bootloader bit from 15 to 16: once installed, the device no longer accepts firmware with bit 15 or lower, so a downgrade to A346MUBUFFZE6 is blocked. Samsung still serves this file.

Model
SM-A346M
Android
Android 16
Type
Security
Bootloader bit
16
First released
Aug 4, 2026
Regions
40

Rollout timeline by region

The date each region code (CSC) first received A346MUBSGFZG4, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BVOBoliviaAug 4, 2026day 0A346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
COMColombia (Claro)Aug 4, 2026day 0A346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
GTOGuatemalaAug 4, 2026day 0A346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
PGUGuatemalaAug 4, 2026day 0A346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
TPAPanamaAug 4, 2026day 0A346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
ZTABrazil (Claro)Aug 4, 2026day 0A346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
ZTMBrazil (TIM)Aug 4, 2026day 0A346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
ZTOBrazilAug 4, 2026day 0A346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
ZVVBrazil (Vivo)Aug 4, 2026day 0A346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
CGUGuatemala (Claro)Aug 4, 2026day 0A346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
AROArgentinaAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
CDRDominican RepublicAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
CTIArgentina (Claro)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
IUSMexico (AT&T)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
MXOMexicoAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
PSNArgentina (Personal)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
TCEMexico (Telcel)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
TGPParaguayAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
TMMMyanmarAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
UFNArgentina (Movistar)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
UPOUruguayAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
CHEChile (Entel)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
CHLChile (Claro)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
CHOChileAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
UYOUruguayAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4
CHTChile (Movistar)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
CHXChileAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
COBColombia (Movistar)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
COLColombiaAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
COOColombiaAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
CRCCosta RicaAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
DORDominican RepublicAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
EBEEcuadorAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
ECOEcuadorAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
GLONigeria (Glo)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
NBSLatin America (open market)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
PEOPeruAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
PETPeru (Movistar)Aug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
PNTPanamaAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4
SAMOceaniaAug 5, 2026+1 dayA346MUBSGFZG4/A346MOWBGFZG4/A346MUBSGFZG4

Download and release notes

samloader download -m SM-A346M -r BVO -v A346MUBSGFZG4/A346MOWOGFZG4/A346MUBSGFZG4

Samsung's release notes and security patch level for this update: SM-A346M / BVO on doc.samsungmobile.com. What each part of the build number means: decode A346MUBSGFZG4.