A055MUBSIDZE1 – Galaxy A05 firmware

Build A055MUBSIDZE1 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 11, 2026 (method) and has reached 39 regions so far. It raises the bootloader bit from 17 to 18: once installed, the device no longer accepts firmware with bit 17 or lower, so a downgrade to A055MUBSHDZD1 is blocked. Samsung still serves this file.

Model
SM-A055M
Android
Android 15
Type
Security
Bootloader bit
18
First released
Jun 11, 2026
Regions
39

Rollout timeline by region

The date each region code (CSC) first received A055MUBSIDZE1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
AROArgentinaJun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
BVOBoliviaJun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
CTIArgentina (Claro)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
IUSMexico (AT&T)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
MXOMexicoJun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
PSNArgentina (Personal)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
TCEMexico (Telcel)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
TGPParaguayJun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
TMMMyanmarJun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
TPAPanamaJun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
UFNArgentina (Movistar)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
UPOUruguayJun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
UYOUruguayJun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
ZTABrazil (Claro)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
ZTMBrazil (TIM)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
ZTOBrazilJun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
ZVVBrazil (Vivo)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1
CDRDominican RepublicJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
CGUGuatemala (Claro)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
CHEChile (Entel)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
CHLChile (Claro)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
CHOChileJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
CHTChile (Movistar)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
CHXChileJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
COBColombia (Movistar)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
COLColombiaJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
COMColombia (Claro)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
COOColombiaJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
CRCCosta RicaJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
DORDominican RepublicJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
EBEEcuadorJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
ECOEcuadorJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
GLONigeria (Glo)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
GTOGuatemalaJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
PEOPeruJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
PETPeru (Movistar)Jun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
PGUGuatemalaJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
PNTPanamaJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1
SAMOceaniaJun 11, 2026day 0A055MUBSIDZE1/A055MOWBIDZE1/A055MUBSIDZE1

Download and release notes

samloader download -m SM-A055M -r ARO -v A055MUBSIDZE1/A055MOWOIDZE1/A055MUBSIDZE1

Samsung's release notes and security patch level for this update: SM-A055M / ARO on doc.samsungmobile.com. What each part of the build number means: decode A055MUBSIDZE1.