A146MUBSFDZI1 – Galaxy A14 5G firmware

Build A146MUBSFDZI1 is a security update for the Galaxy A14 5G (SM-A146M) on Android 15 (One UI 7). It first appeared on Samsung's servers on Oct 7, 2026 (method) and has reached 31 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 A146MUBUEDZH1 is blocked. Samsung still serves this file.

Model
SM-A146M
Android
Android 15
Type
Security
Bootloader bit
15
First released
Oct 7, 2026
Regions
31

Not yet released in 3 regions that are still on an older build: COB, COL, PGU.

Rollout timeline by region

The date each region code (CSC) first received A146MUBSFDZI1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
AROArgentinaOct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
CDRDominican RepublicOct 7, 2026day 0A146MUBSFDZI1/A146MOWAFDZI1/A146MUBSFDZI1
CGUGuatemala (Claro)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
COOColombiaOct 7, 2026day 0A146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
CTIArgentina (Claro)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
GTOGuatemalaOct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
IUSMexico (AT&T)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
MXOMexicoOct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
PEOPeruOct 7, 2026day 0A146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
PETPeru (Movistar)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
PNTPanamaOct 7, 2026day 0A146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
PSNArgentina (Personal)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
SAMOceaniaOct 7, 2026day 0A146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
TCEMexico (Telcel)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
TMMMyanmarOct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
TPAPanamaOct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
UFNArgentina (Movistar)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
UYOUruguayOct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
ZTABrazil (Claro)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
ZTMBrazil (TIM)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
ZTOBrazilOct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
ZVVBrazil (Vivo)Oct 7, 2026day 0A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
CRCCosta RicaOct 14, 2026+7 daysA146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
DORDominican RepublicOct 14, 2026+7 daysA146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
GLONigeria (Glo)Oct 14, 2026+7 daysA146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
UPOUruguayOct 14, 2026+7 daysA146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1
CHLChile (Claro)Oct 20, 2026+13 daysA146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
CHOChileOct 20, 2026+13 daysA146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
CHTChile (Movistar)Oct 20, 2026+13 daysA146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
CHXChileOct 20, 2026+13 daysA146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1
CHEChile (Entel)Oct 20, 2026+13 daysA146MUBSFDZI1/A146MOWBFDZI1/A146MUBSFDZI1

Download and release notes

samloader download -m SM-A146M -r ARO -v A146MUBSFDZI1/A146MOWOFDZI1/A146MUBSFDZI1

Samsung's release notes and security patch level for this update: SM-A146M / ARO on doc.samsungmobile.com. What each part of the build number means: decode A146MUBSFDZI1.