A042MUBSIEZH1 – Galaxy A04e firmware

Build A042MUBSIEZH1 is a security update for the Galaxy A04e (SM-A042M) on Android 14 (One UI 6). It first appeared on Samsung's servers on Aug 27, 2026 (method) and has reached 35 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 A042MUBSHEZF2 is blocked. Samsung still serves this file.

Model
SM-A042M
Android
Android 14
Type
Security
Bootloader bit
18
First released
Aug 27, 2026
Regions
35

Rollout timeline by region

The date each region code (CSC) first received A042MUBSIEZH1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BVOBoliviaAug 27, 2026day 0A042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
COMColombia (Claro)Aug 27, 2026day 0A042MUBSIEZH1/A042MOWAIEZH1/A042MUBSIEZH1
GTOGuatemalaAug 27, 2026day 0A042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
TPAPanamaAug 27, 2026day 0A042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
IUSMexico (AT&T)Aug 31, 2026+4 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
MXOMexicoAug 31, 2026+4 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
TCEMexico (Telcel)Aug 31, 2026+4 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
TMMMyanmarAug 31, 2026+4 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
CDRDominican RepublicSep 14, 2026+18 daysA042MUBSIEZH1/A042MOWAIEZH1/A042MUBSIEZH1
PGUGuatemalaSep 14, 2026+18 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
TGPParaguaySep 14, 2026+18 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
UPOUruguaySep 14, 2026+18 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
AROArgentinaSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
CGUGuatemala (Claro)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
CHEChile (Entel)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
CHLChile (Claro)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
CHOChileSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
CHTChile (Movistar)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
CHXChileSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
COBColombia (Movistar)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
COLColombiaSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
COOColombiaSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
CTIArgentina (Claro)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
DORDominican RepublicSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
EBEEcuadorSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
ECOEcuadorSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
GLONigeria (Glo)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
NBSLatin America (open market)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
PEOPeruSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
PETPeru (Movistar)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
PNTPanamaSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
PSNArgentina (Personal)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
SAMOceaniaSep 15, 2026+19 daysA042MUBSIEZH1/A042MOWBIEZH1/A042MUBSIEZH1
UFNArgentina (Movistar)Sep 15, 2026+19 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1
UYOUruguaySep 15, 2026+19 daysA042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1

Download and release notes

samloader download -m SM-A042M -r BVO -v A042MUBSIEZH1/A042MOWOIEZH1/A042MUBSIEZH1

Samsung's release notes and security patch level for this update: SM-A042M / BVO on doc.samsungmobile.com. What each part of the build number means: decode A042MUBSIEZH1.