M156BXXSCDZJ5 – Galaxy M15 5G firmware

Build M156BXXSCDZJ5 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 Oct 25, 2026 (method) and has reached 16 regions so far. It raises the bootloader bit from 11 to 12: once installed, the device no longer accepts firmware with bit 11 or lower, so a downgrade to M156BXXSBDZG5 is blocked. Samsung still serves this file.

Model
SM-M156B
Android
Android 16
Type
Security
Bootloader bit
12
First released
Oct 25, 2026
Regions
16

Rollout timeline by region

The date each region code (CSC) first received M156BXXSCDZJ5, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
CAUCaucasusOct 25, 2026day 0M156BXXSCDZJ5/M156BOXMCDZJ5/M156BXXSCDZJ5
EGYEgyptOct 25, 2026day 0M156BXXSCDZJ5/M156BOJMCDZJ5/M156BXXSCDZJ5
EUXEurope (Multi-CSC)Oct 25, 2026day 0M156BXXSCDZJ5/M156BOXMCDZJ5/M156BXXSCDZJ5
EUYEurope (Multi-CSC)Oct 25, 2026day 0M156BXXSCDZJ5/M156BOXMCDZJ5/M156BXXSCDZJ5
MIDMiddle EastOct 25, 2026day 0M156BXXSCDZJ5/M156BOJMCDZJ5/M156BXXSCDZJ5
SKZKazakhstanOct 25, 2026day 0M156BXXSCDZJ5/M156BOXMCDZJ5/M156BXXSCDZJ5
TURTurkeyOct 25, 2026day 0M156BXXSCDZJ5/M156BOJMCDZJ5/M156BXXSCDZJ5
XFASouth AfricaOct 25, 2026day 0M156BXXSCDZJ5/M156BOJMCDZJ5/M156BXXSCDZJ5
XIDIndonesiaOct 25, 2026day 0M156BXXSCDZJ5/M156BOLECDZJ5/M156BXXSCDZJ5
XXVVietnamOct 25, 2026day 0M156BXXSCDZJ5/M156BOLMCDZJ5/M156BXXSCDZJ5
BKDBangladeshOct 26, 2026+1 dayM156BXXSCDZJ5/M156BODMCDZJ5/M156BXXSCDZJ5
INSIndiaOct 26, 2026+1 dayM156BXXSCDZJ5/M156BODMCDZJ5/M156BXXSCDZJ5
NPBNepalOct 26, 2026+1 dayM156BXXSCDZJ5/M156BODMCDZJ5/M156BXXSCDZJ5
SLKSri LankaOct 26, 2026+1 dayM156BXXSCDZJ5/M156BODMCDZJ5/M156BXXSCDZJ5
COOColombiaOct 27, 2026+2 daysM156BXXSCDZJ5/M156BOWOCDZJ5/M156BXXSCDZJ5
ZTOBrazilOct 27, 2026+2 daysM156BXXSCDZJ5/M156BOWOCDZJ5/M156BXXSCDZJ5

Download and release notes

samloader download -m SM-M156B -r EUX -v M156BXXSCDZJ5/M156BOXMCDZJ5/M156BXXSCDZJ5

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 M156BXXSCDZJ5.