M156BXXS9CZB3 – Galaxy M15 5G firmware
Build M156BXXS9CZB3 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 Mar 8, 2026 (method) and has reached
16 regions so far. It raises the bootloader bit from 8 to 9: once installed, the device no longer accepts firmware with bit 8 or lower, so a downgrade to M156BXXS8CZA3 is blocked. Samsung still serves this file.
- Model
- SM-M156B
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 9
- First released
- Mar 8, 2026
- Regions
- 16
Rollout timeline by region
The date each region code (CSC) first received M156BXXS9CZB3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
EGY | Egypt | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOJM9CZB3/M156BXXS9CZB3 |
MID | Middle East | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOJM9CZB3/M156BXXS9CZB3 |
TUR | Turkey | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOJM9CZB3/M156BXXS9CZB3 |
XFA | South Africa | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOJM9CZB3/M156BXXS9CZB3 |
CAU | Caucasus | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOXM9CZB3/M156BXXS9CZB3 |
EUX | Europe (Multi-CSC) | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOXM9CZB3/M156BXXS9CZB3 |
EUY | Europe (Multi-CSC) | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOXM9CZB3/M156BXXS9CZB3 |
SKZ | Kazakhstan | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOXM9CZB3/M156BXXS9CZB3 |
XID | Indonesia | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOLE9CZB3/M156BXXS9CZB3 |
XXV | Vietnam | Mar 8, 2026 | day 0 | M156BXXS9CZB3/M156BOLM9CZB3/M156BXXS9CZB3 |
COO | Colombia | Mar 9, 2026 | +1 day | M156BXXS9CZB3/M156BOWO9CZB3/M156BXXS9CZB3 |
ZTO | Brazil | Mar 9, 2026 | +1 day | M156BXXS9CZB3/M156BOWO9CZB3/M156BXXS9CZB3 |
BKD | Bangladesh | Mar 11, 2026 | +3 days | M156BXXS9CZB3/M156BODM9CZB5/M156BXXS9CZB3 |
INS | India | Mar 11, 2026 | +3 days | M156BXXS9CZB3/M156BODM9CZB4/M156BXXS9CZB3 |
NPB | Nepal | Mar 11, 2026 | +3 days | M156BXXS9CZB3/M156BODM9CZB4/M156BXXS9CZB3 |
SLK | Sri Lanka | Mar 11, 2026 | +3 days | M156BXXS9CZB3/M156BODM9CZB4/M156BXXS9CZB3 |
Download and release notes
samloader download -m SM-M156B -r EUX -v M156BXXS9CZB3/M156BOXM9CZB3/M156BXXS9CZB3Samsung'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 M156BXXS9CZB3.