M546BXXUCFZE5 – Galaxy M54 5G firmware

Build M546BXXUCFZE5 is a feature update for the Galaxy M54 5G (SM-M546B) on Android 16 (One UI 8). It first appeared on Samsung's servers on May 31, 2026 (method) and has reached 15 regions so far. It keeps bootloader bit 12, so downgrading to the previous build M546BXXSCEZD3 is still possible. Samsung still serves this file.

Model
SM-M546B
Android
Android 16
Type
Feature
Bootloader bit
12
First released
May 31, 2026
Regions
15

Rollout timeline by region

The date each region code (CSC) first received M546BXXUCFZE5, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
MYMMyanmarMay 31, 2026day 0M546BXXUCFZE5/M546BOLMCFZE5/M546BXXUCFZE5
THLThailandMay 31, 2026day 0M546BXXUCFZE5/M546BOLMCFZE5/M546BXXUCFZE5
XMEMalaysiaMay 31, 2026day 0M546BXXUCFZE5/M546BOLMCFZE5/M546BXXUCFZE5
XNZNew ZealandMay 31, 2026day 0M546BXXUCFZE5/M546BOLMCFZE5/M546BXXUCFZE5
XXVVietnamMay 31, 2026day 0M546BXXUCFZE5/M546BOLMCFZE5/M546BXXUCFZE5
XIDIndonesiaMay 31, 2026day 0M546BXXUCFZE5/M546BOLECFZE5/M546BXXUCFZE5
ILOIsraelJun 3, 2026+3 daysM546BXXUCFZE5/M546BOJMCFZE5/M546BXXUCFZE5
KSASaudi ArabiaJun 3, 2026+3 daysM546BXXUCFZE5/M546BOJMCFZE5/M546BXXUCFZE5
MIDMiddle EastJun 3, 2026+3 daysM546BXXUCFZE5/M546BOJMCFZE5/M546BXXUCFZE5
MWDMoroccoJun 3, 2026+3 daysM546BXXUCFZE5/M546BOJMCFZE5/M546BXXUCFZE5
XSGUnited Arab EmiratesJun 3, 2026+3 daysM546BXXUCFZE5/M546BOJMCFZE5/M546BXXUCFZE5
ZTOBrazilJun 8, 2026+8 daysM546BXXUCFZE5/M546BOWOCFZE5/M546BXXUCFZE5
COOColombiaJun 15, 2026+15 daysM546BXXUCFZE5/M546BOWOCFZE5/M546BXXUCFZE5
PEOPeruJun 15, 2026+15 daysM546BXXUCFZE5/M546BOWOCFZE5/M546BXXUCFZE5
CHOChileJun 16, 2026+16 daysM546BXXUCFZE5/M546BOWOCFZE5/M546BXXUCFZE5

Download and release notes

samloader download -m SM-M546B -r MYM -v M546BXXUCFZE5/M546BOLMCFZE5/M546BXXUCFZE5

Samsung's release notes and security patch level for this update: SM-M546B / MYM on doc.samsungmobile.com. What each part of the build number means: decode M546BXXUCFZE5.