A236MUBSEEZB1 – Galaxy A23 5G firmware

Build A236MUBSEEZB1 is a security update for the Galaxy A23 5G (SM-A236M) on Android 14 (One UI 6). It first appeared on Samsung's servers on Mar 9, 2026 (method) and has reached 17 regions so far. It raises the bootloader bit from 13 to 14: once installed, the device no longer accepts firmware with bit 13 or lower, so a downgrade to A236MUBSDEZA1 is blocked. Samsung still serves this file.

Model
SM-A236M
Android
Android 14
Type
Security
Bootloader bit
14
First released
Mar 9, 2026
Regions
17

Rollout timeline by region

The date each region code (CSC) first received A236MUBSEEZB1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
AROArgentinaMar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
CGUGuatemala (Claro)Mar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
CHEChile (Entel)Mar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
CHLChile (Claro)Mar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
CHOChileMar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
CHTChile (Movistar)Mar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
CHXChileMar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
CTIArgentina (Claro)Mar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
GLONigeria (Glo)Mar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
GTOGuatemalaMar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
PSNArgentina (Personal)Mar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
TPAPanamaMar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
UFNArgentina (Movistar)Mar 9, 2026day 0A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
ZTABrazil (Claro)Mar 10, 2026+1 dayA236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
ZTMBrazil (TIM)Mar 10, 2026+1 dayA236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
ZTOBrazilMar 10, 2026+1 dayA236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1
ZVVBrazil (Vivo)Mar 10, 2026+1 dayA236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1

Download and release notes

samloader download -m SM-A236M -r ARO -v A236MUBSEEZB1/A236MOWOEEZB1/A236MUBSEEZB1

Samsung's release notes and security patch level for this update: SM-A236M / ARO on doc.samsungmobile.com. What each part of the build number means: decode A236MUBSEEZB1.