A055MUBSJDZF1 – Galaxy A05 firmware

Build A055MUBSJDZF1 is a security update for the Galaxy A05 (SM-A055M) on Android 15 (One UI 7). It first appeared on Samsung's servers on Jun 29, 2026 (method) and has reached 39 regions so far. It raises the bootloader bit from 18 to 19: once installed, the device no longer accepts firmware with bit 18 or lower, so a downgrade to A055MUBSIDZE1 is blocked. Samsung still serves this file.

Model
SM-A055M
Android
Android 15
Type
Security
Bootloader bit
19
First released
Jun 29, 2026
Regions
39

Rollout timeline by region

The date each region code (CSC) first received A055MUBSJDZF1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BVOBoliviaJun 29, 2026day 0A055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
CGUGuatemala (Claro)Jun 29, 2026day 0A055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
GTOGuatemalaJun 29, 2026day 0A055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
TPAPanamaJun 29, 2026day 0A055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
ZTABrazil (Claro)Jun 30, 2026+1 dayA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
ZTMBrazil (TIM)Jun 30, 2026+1 dayA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
ZTOBrazilJun 30, 2026+1 dayA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
ZVVBrazil (Vivo)Jun 30, 2026+1 dayA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
COMColombia (Claro)Jun 30, 2026+1 dayA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
AROArgentinaJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
CDRDominican RepublicJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
COBColombia (Movistar)Jul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
COLColombiaJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
COOColombiaJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
CRCCosta RicaJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
CTIArgentina (Claro)Jul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
DORDominican RepublicJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
EBEEcuadorJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
ECOEcuadorJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
GLONigeria (Glo)Jul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
IUSMexico (AT&T)Jul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
MXOMexicoJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
PGUGuatemalaJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
PSNArgentina (Personal)Jul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
TCEMexico (Telcel)Jul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
TGPParaguayJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
TMMMyanmarJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
UFNArgentina (Movistar)Jul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
UPOUruguayJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
UYOUruguayJul 1, 2026+2 daysA055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1
CHEChile (Entel)Jul 2, 2026+3 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
CHLChile (Claro)Jul 2, 2026+3 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
CHOChileJul 2, 2026+3 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
CHTChile (Movistar)Jul 2, 2026+3 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
CHXChileJul 2, 2026+3 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
PEOPeruJul 6, 2026+7 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
PETPeru (Movistar)Jul 6, 2026+7 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
PNTPanamaJul 6, 2026+7 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1
SAMOceaniaJul 6, 2026+7 daysA055MUBSJDZF1/A055MOWBJDZF1/A055MUBSJDZF1

Download and release notes

samloader download -m SM-A055M -r BVO -v A055MUBSJDZF1/A055MOWOJDZF1/A055MUBSJDZF1

Samsung's release notes and security patch level for this update: SM-A055M / BVO on doc.samsungmobile.com. What each part of the build number means: decode A055MUBSJDZF1.