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`A546EXXSNFZJ3` – Galaxy A54 5G firmware

Build A546EXXSNFZJ3 is a security update for the Galaxy A54 5G (SM-A546E) on Android 16 (One UI 8). It first appeared on Samsung's servers on Oct 12, 2026 (method) and has reached 76 regions so far. It keeps bootloader bit 23, so downgrading to the previous build A546EXXSNFZI1 is still possible. Samsung still serves this file.

Model: SM-A546E
Android: Android 16
Type: Security
Bootloader bit: 23
First released: Oct 12, 2026
Regions: 76

Rollout timeline by region

The date each region code (CSC) first received A546EXXSNFZJ3, counted from the first release.

CSC	Region	Released	Rollout	Version (PDA/CSC/MODEM)
`THL`	Thailand	Oct 12, 2026	day 0	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`CAU`	Caucasus	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOXENFZJ3/A546EXXSNFZJ3`
`SEK`	Ukraine	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOXENFZJ3/A546EXXSNFZJ3`
`SKZ`	Kazakhstan	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOXENFZJ3/A546EXXSNFZJ3`
`ACR`	Ghana	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`AFG`	Afghanistan	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`AFR`	Africa	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`DKR`	Senegal	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`ECT`	Nigeria	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`EGY`	Egypt	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`ILO`	Israel	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`KSA`	Saudi Arabia	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`LYS`	Libya	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`MID`	Middle East	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`MWD`	Morocco	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`PKD`	Pakistan	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`TUN`	Tunisia	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`TUR`	Turkey	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`XFA`	South Africa	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`XFE`	South Africa	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`XFV`	South Africa (Vodacom)	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`XSG`	United Arab Emirates	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOJMNFZJ3/A546EXXSNFZJ3`
`XID`	Indonesia	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLENFZJ3/A546EXXSNFZJ3`
`GLB`	Philippines (Globe)	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`MM1`	Singapore (M1)	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`MYM`	Myanmar	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`OPS`	Australia (Optus)	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`SIN`	Singapore (Singtel)	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`STH`	Singapore (StarHub)	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`TEL`	Australia (Telstra)	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`XME`	Malaysia	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`XNZ`	New Zealand	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`XSA`	Australia	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`XSP`	Singapore	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`XTC`	Philippines	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`XXV`	Vietnam	Oct 18, 2026	+6 days	`A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3`
`BVO`	Bolivia	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`GTO`	Guatemala	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`IUS`	Mexico (AT&T)	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`MXO`	Mexico	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`TCE`	Mexico (Telcel)	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`TGP`	Paraguay	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`TMM`	Myanmar	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`TPA`	Panama	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`UPO`	Uruguay	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`ZTA`	Brazil (Claro)	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`ZTM`	Brazil (TIM)	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`ZTO`	Brazil	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`ZVV`	Brazil (Vivo)	Oct 22, 2026	+10 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`ARO`	Argentina	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`CDR`	Dominican Republic	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`CGU`	Guatemala (Claro)	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`COB`	Colombia (Movistar)	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`COL`	Colombia	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`COO`	Colombia	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`CRC`	Costa Rica	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`CTI`	Argentina (Claro)	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`DOR`	Dominican Republic	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`EBE`	Ecuador	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`ECO`	Ecuador	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`GLO`	Nigeria (Glo)	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`NBS`	Latin America (open market)	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`PEO`	Peru	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`PET`	Peru (Movistar)	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`PNT`	Panama	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`PSN`	Argentina (Personal)	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`SAM`	Oceania	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`UFN`	Argentina (Movistar)	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`UYO`	Uruguay	Oct 27, 2026	+15 days	`A546EXXSNFZJ3/A546EOWONFZJ3/A546EXXSNFZJ3`
`PGU`	Guatemala	Oct 29, 2026	+17 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`COM`	Colombia (Claro)	Oct 29, 2026	+17 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`CHE`	Chile (Entel)	Nov 9, 2026	+28 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`CHL`	Chile (Claro)	Nov 9, 2026	+28 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`CHO`	Chile	Nov 9, 2026	+28 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`CHT`	Chile (Movistar)	Nov 9, 2026	+28 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`
`CHX`	Chile	Nov 9, 2026	+28 days	`A546EXXSNFZJ3/A546EOWBNFZJ3/A546EXXSNFZJ3`

Download and release notes

samloader download -m SM-A546E -r XSA -v A546EXXSNFZJ3/A546EOLMNFZJ3/A546EXXSNFZJ3

Samsung's release notes and security patch level for this update: SM-A546E / XSA on doc.samsungmobile.com. What each part of the build number means: decode A546EXXSNFZJ3.