`S721BXXSDDZG1` – Galaxy S24 FE firmware

Build S721BXXSDDZG1 is a security update for the Galaxy S24 FE (SM-S721B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 22, 2026 (method) and has reached 93 regions so far. It raises the bootloader bit from 12 to 13: once installed, the device no longer accepts firmware with bit 12 or lower, so a downgrade to S721BXXSCDZF3 is blocked. Samsung still serves this file.

Model: SM-S721B
Android: Android 16
Type: Security
Bootloader bit: 13
First released: Jul 22, 2026
Regions: 93

Rollout timeline by region

The date each region code (CSC) first received S721BXXSDDZG1, counted from the first release.

CSC	Region	Released	Rollout	Version (PDA/CSC/MODEM)
`ACR`	Ghana	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`AFG`	Afghanistan	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`AFR`	Africa	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`DKR`	Senegal	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`ECT`	Nigeria	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`EGY`	Egypt	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`ILO`	Israel	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`KSA`	Saudi Arabia	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`LYS`	Libya	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`MID`	Middle East	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`MWD`	Morocco	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`PAK`	Pakistan	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`PKD`	Pakistan	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`TUN`	Tunisia	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`XFA`	South Africa	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`XFV`	South Africa (Vodacom)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`XSG`	United Arab Emirates	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOJMDDZG1/S721BXXSDDZG1`
`XID`	Indonesia	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLEDDZG1/S721BXXSDDZG1`
`GLB`	Philippines (Globe)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`MM1`	Singapore (M1)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`SIN`	Singapore (Singtel)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`STH`	Singapore (StarHub)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`THL`	Thailand	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`XME`	Malaysia	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`XNZ`	New Zealand	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`XSP`	Singapore	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`XTC`	Philippines	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`XXV`	Vietnam	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`CAU`	Caucasus	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXEDDZG1/S721BXXSDDZG1`
`SKZ`	Kazakhstan	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXEDDZG1/S721BXXSDDZG1`
`BOG`	France (Bouygues)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`EUX`	Europe (Multi-CSC)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`EUY`	Europe (Multi-CSC)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`MEO`	Portugal (MEO)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`MOB`	Austria (A1)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`MOT`	Slovenia (Telekom)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`MSR`	Serbia	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`PLS`	Poland (Plus)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`PRT`	Poland (Play)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`SFR`	France (SFR)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`SIM`	Slovenia (A1)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`SWC`	Switzerland	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`TOP`	Serbia/Montenegro	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`TUR`	Turkey	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`VIP`	Croatia (A1)	Jul 22, 2026	day 0	`S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1`
`ARO`	Argentina	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`BVO`	Bolivia	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`CDR`	Dominican Republic	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`CGU`	Guatemala (Claro)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`CHE`	Chile (Entel)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`CHL`	Chile (Claro)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`CHO`	Chile	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`CHT`	Chile (Movistar)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`CHX`	Chile	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`COB`	Colombia (Movistar)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`COL`	Colombia	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`COM`	Colombia (Claro)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`COO`	Colombia	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`CRC`	Costa Rica	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`CTI`	Argentina (Claro)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`DOR`	Dominican Republic	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`EBE`	Ecuador	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`ECO`	Ecuador	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`GLO`	Nigeria (Glo)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`GTO`	Guatemala	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`IUS`	Mexico (AT&T)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`MXO`	Mexico	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`PEO`	Peru	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`PET`	Peru (Movistar)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`PGU`	Guatemala	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`PNT`	Panama	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`PSN`	Argentina (Personal)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`SAM`	Oceania	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`TCE`	Mexico (Telcel)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`TGP`	Paraguay	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`TMM`	Myanmar	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`TPA`	Panama	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`UFN`	Argentina (Movistar)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`UPO`	Uruguay	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`UYO`	Uruguay	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`ZTA`	Brazil (Claro)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`ZTM`	Brazil (TIM)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`ZTO`	Brazil	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`ZVV`	Brazil (Vivo)	Jul 23, 2026	+1 day	`S721BXXSDDZG1/S721BOWODDZG1/S721BXXSDDZG1`
`BKD`	Bangladesh	Jul 27, 2026	+5 days	`S721BXXSDDZG1/S721BODMDDZG1/S721BXXSDDZG1`
`BNG`	Belgium	Jul 27, 2026	+5 days	`S721BXXSDDZG1/S721BODMDDZG1/S721BXXSDDZG1`
`INS`	India	Jul 27, 2026	+5 days	`S721BXXSDDZG1/S721BODMDDZG1/S721BXXSDDZG1`
`NPB`	Nepal	Jul 27, 2026	+5 days	`S721BXXSDDZG1/S721BODMDDZG1/S721BXXSDDZG1`
`SLK`	Sri Lanka	Jul 27, 2026	+5 days	`S721BXXSDDZG1/S721BODMDDZG1/S721BXXSDDZG1`
`OPS`	Australia (Optus)	Jul 28, 2026	+6 days	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`TEL`	Australia (Telstra)	Jul 28, 2026	+6 days	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`VAU`	Australia (Vodafone)	Jul 28, 2026	+6 days	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`
`XSA`	Australia	Jul 28, 2026	+6 days	`S721BXXSDDZG1/S721BOLMDDZG1/S721BXXSDDZG1`

Download and release notes

samloader download -m SM-S721B -r EUX -v S721BXXSDDZG1/S721BOXMDDZG1/S721BXXSDDZG1

Samsung's release notes and security patch level for this update: SM-S721B / EUX on doc.samsungmobile.com. What each part of the build number means: decode S721BXXSDDZG1.

S721BXXSDDZG1 – Galaxy S24 FE firmware

Rollout timeline by region

Download and release notes

`S721BXXSDDZG1` – Galaxy S24 FE firmware