M156BXXSACZE1 – Galaxy M15 5G firmware

Build M156BXXSACZE1 is a security update for the Galaxy M15 5G (SM-M156B) on Android 16 (One UI 8). It first appeared on Samsung's servers on May 18, 2026 (method) and has reached 16 regions so far. It raises the bootloader bit from 9 to 10: once installed, the device no longer accepts firmware with bit 9 or lower, so a downgrade to M156BXXS9CZB3 is blocked. Samsung still serves this file.

Model
SM-M156B
Android
Android 16
Type
Security
Bootloader bit
10
First released
May 18, 2026
Regions
16

Rollout timeline by region

The date each region code (CSC) first received M156BXXSACZE1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
EGYEgyptMay 18, 2026day 0M156BXXSACZE1/M156BOJMACZE1/M156BXXSACZE1
MIDMiddle EastMay 18, 2026day 0M156BXXSACZE1/M156BOJMACZE1/M156BXXSACZE1
TURTurkeyMay 18, 2026day 0M156BXXSACZE1/M156BOJMACZE1/M156BXXSACZE1
XFASouth AfricaMay 18, 2026day 0M156BXXSACZE1/M156BOJMACZE1/M156BXXSACZE1
COOColombiaMay 20, 2026+2 daysM156BXXSACZE1/M156BOWOACZE1/M156BXXSACZE1
ZTOBrazilMay 20, 2026+2 daysM156BXXSACZE1/M156BOWOACZE1/M156BXXSACZE1
BKDBangladeshMay 24, 2026+6 daysM156BXXSACZE1/M156BODMACZE2/M156BXXSACZE1
INSIndiaMay 24, 2026+6 daysM156BXXSACZE1/M156BODMACZE1/M156BXXSACZE1
SLKSri LankaMay 24, 2026+6 daysM156BXXSACZE1/M156BODMACZE1/M156BXXSACZE1
CAUCaucasusMay 24, 2026+6 daysM156BXXSACZE1/M156BOXMACZE1/M156BXXSACZE1
EUXEurope (Multi-CSC)May 24, 2026+6 daysM156BXXSACZE1/M156BOXMACZE1/M156BXXSACZE1
EUYEurope (Multi-CSC)May 24, 2026+6 daysM156BXXSACZE1/M156BOXMACZE1/M156BXXSACZE1
SKZKazakhstanMay 24, 2026+6 daysM156BXXSACZE1/M156BOXMACZE1/M156BXXSACZE1
XXVVietnamMay 24, 2026+6 daysM156BXXSACZE1/M156BOLMACZE1/M156BXXSACZE1
XIDIndonesiaMay 24, 2026+6 daysM156BXXSACZE1/M156BOLEACZE1/M156BXXSACZE1
NPBNepalMay 24, 2026+6 daysM156BXXSACZE1/M156BODMACZE1/M156BXXSACZE1

Download and release notes

samloader download -m SM-M156B -r EUX -v M156BXXSACZE1/M156BOXMACZE1/M156BXXSACZE1

Samsung's release notes and security patch level for this update: SM-M156B / EUX on doc.samsungmobile.com. What each part of the build number means: decode M156BXXSACZE1.