M546BXXUFGZJ3 – Galaxy M54 5G firmware

Build M546BXXUFGZJ3 is a feature update for the Galaxy M54 5G (SM-M546B) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 25, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 15, so downgrading to the previous build M546BXXSFFZH3 is still possible. Samsung still serves this file.

Model
SM-M546B
Android
Android 17
Type
Feature
Bootloader bit
15
First released
Oct 25, 2026
Regions
14

Not yet released in 2 regions that are still on an older build: CHO, GTO.

Rollout timeline by region

The date each region code (CSC) first received M546BXXUFGZJ3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
MYMMyanmarOct 25, 2026day 0M546BXXUFGZJ3/M546BOLMFGZJ3/M546BXXUFGZJ3
THLThailandOct 25, 2026day 0M546BXXUFGZJ3/M546BOLMFGZJ3/M546BXXUFGZJ3
XMEMalaysiaOct 25, 2026day 0M546BXXUFGZJ3/M546BOLMFGZJ3/M546BXXUFGZJ3
XXVVietnamOct 25, 2026day 0M546BXXUFGZJ3/M546BOLMFGZJ3/M546BXXUFGZJ3
ILOIsraelOct 28, 2026+3 daysM546BXXUFGZJ3/M546BOJMFGZJ5/M546BXXUFGZJ3
KSASaudi ArabiaOct 28, 2026+3 daysM546BXXUFGZJ3/M546BOJMFGZJ5/M546BXXUFGZJ3
MIDMiddle EastOct 28, 2026+3 daysM546BXXUFGZJ3/M546BOJMFGZJ5/M546BXXUFGZJ3
MWDMoroccoOct 28, 2026+3 daysM546BXXUFGZJ3/M546BOJMFGZJ5/M546BXXUFGZJ3
XSGUnited Arab EmiratesOct 28, 2026+3 daysM546BXXUFGZJ3/M546BOJMFGZJ5/M546BXXUFGZJ3
XNZNew ZealandOct 28, 2026+3 daysM546BXXUFGZJ3/M546BOLMFGZJ3/M546BXXUFGZJ3
XIDIndonesiaOct 28, 2026+3 daysM546BXXUFGZJ3/M546BOLEFGZJ4/M546BXXUFGZJ3
ZTOBrazilNov 4, 2026+10 daysM546BXXUFGZJ3/M546BOWOFGZJ3/M546BXXUFGZJ3
COOColombiaNov 12, 2026+18 daysM546BXXUFGZJ3/M546BOWOFGZJ3/M546BXXUFGZJ3
PEOPeruNov 12, 2026+18 daysM546BXXUFGZJ3/M546BOWOFGZJ3/M546BXXUFGZJ3

Download and release notes

samloader download -m SM-M546B -r MYM -v M546BXXUFGZJ3/M546BOLMFGZJ3/M546BXXUFGZJ3

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 M546BXXUFGZJ3.