M156BXXSBDZG5 – Galaxy M15 5G firmware

Build M156BXXSBDZG5 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 Aug 2, 2026 (method) and has reached 16 regions so far. It raises the bootloader bit from 10 to 11: once installed, the device no longer accepts firmware with bit 10 or lower, so a downgrade to M156BXXSADZF2 is blocked. Samsung still serves this file.

Model
SM-M156B
Android
Android 16
Type
Security
Bootloader bit
11
First released
Aug 2, 2026
Regions
16

Rollout timeline by region

The date each region code (CSC) first received M156BXXSBDZG5, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
CAUCaucasusAug 2, 2026day 0M156BXXSBDZG5/M156BOXMBDZG5/M156BXXSBDZG5
EGYEgyptAug 2, 2026day 0M156BXXSBDZG5/M156BOJMBDZG5/M156BXXSBDZG5
EUXEurope (Multi-CSC)Aug 2, 2026day 0M156BXXSBDZG5/M156BOXMBDZG5/M156BXXSBDZG5
EUYEurope (Multi-CSC)Aug 2, 2026day 0M156BXXSBDZG5/M156BOXMBDZG5/M156BXXSBDZG5
MIDMiddle EastAug 2, 2026day 0M156BXXSBDZG5/M156BOJMBDZG5/M156BXXSBDZG5
SKZKazakhstanAug 2, 2026day 0M156BXXSBDZG5/M156BOXMBDZG5/M156BXXSBDZG5
TURTurkeyAug 2, 2026day 0M156BXXSBDZG5/M156BOJMBDZG5/M156BXXSBDZG5
XFASouth AfricaAug 2, 2026day 0M156BXXSBDZG5/M156BOJMBDZG5/M156BXXSBDZG5
XIDIndonesiaAug 2, 2026day 0M156BXXSBDZG5/M156BOLEBDZG5/M156BXXSBDZG5
XXVVietnamAug 2, 2026day 0M156BXXSBDZG5/M156BOLMBDZG5/M156BXXSBDZG5
BKDBangladeshAug 3, 2026+1 dayM156BXXSBDZG5/M156BODMBDZG5/M156BXXSBDZG5
INSIndiaAug 3, 2026+1 dayM156BXXSBDZG5/M156BODMBDZG5/M156BXXSBDZG5
NPBNepalAug 3, 2026+1 dayM156BXXSBDZG5/M156BODMBDZG5/M156BXXSBDZG5
SLKSri LankaAug 3, 2026+1 dayM156BXXSBDZG5/M156BODMBDZG5/M156BXXSBDZG5
COOColombiaAug 4, 2026+2 daysM156BXXSBDZG5/M156BOWOBDZG5/M156BXXSBDZG5
ZTOBrazilAug 4, 2026+2 daysM156BXXSBDZG5/M156BOWOBDZG5/M156BXXSBDZG5

Download and release notes

samloader download -m SM-M156B -r EUX -v M156BXXSBDZG5/M156BOXMBDZG5/M156BXXSBDZG5

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 M156BXXSBDZG5.