S918BXXSAFZF5 – Galaxy S23 Ultra firmware

Build S918BXXSAFZF5 is a security update for the Galaxy S23 Ultra (SM-S918B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 28, 2026 (method) and has reached 98 regions so far. It keeps bootloader bit 10, so downgrading to the previous build S918BXXSAFZE1 is still possible. Samsung still serves this file.

Model
SM-S918B
Android
Android 16
Type
Security
Bootloader bit
10
First released
Jun 28, 2026
Regions
98

Rollout timeline by region

The date each region code (CSC) first received S918BXXSAFZF5, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
OPSAustralia (Optus)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
TELAustralia (Telstra)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
VAUAustralia (Vodafone)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XSAAustraliaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
BOGFrance (Bouygues)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
BTBUnited Kingdom (BT)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
CAUCaucasusJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
EVRUnited Kingdom (EE)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
MEOPortugal (MEO)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
MOBAustria (A1)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
MOTSlovenia (Telekom)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
MSRSerbiaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
O2CCzech Republic (O2)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
PLSPoland (Plus)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
PRTPoland (Play)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
SEKUkraineJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
SERRussiaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
SFRFrance (SFR)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
SIMSlovenia (A1)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
SKZKazakhstanJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
SWCSwitzerlandJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
TIMItaly (TIM)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
TOPSerbia/MontenegroJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
VIPCroatia (A1)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
EUXEurope (Multi-CSC)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
EUYEurope (Multi-CSC)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XIDIndonesiaJun 28, 2026day 0S918BXXSAFZF5/S918BOLEAFZF5/S918BXXSAFZE1
GLBPhilippines (Globe)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
MM1Singapore (M1)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
SINSingapore (Singtel)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
STHSingapore (StarHub)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
THLThailandJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XMEMalaysiaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XNZNew ZealandJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XSPSingaporeJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XTCPhilippinesJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XXVVietnamJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
ACRGhanaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
AFGAfghanistanJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
AFRAfricaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
DKRSenegalJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
ECTNigeriaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
EGYEgyptJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
ILOIsraelJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
KSASaudi ArabiaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
LYSLibyaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
MIDMiddle EastJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
MWDMoroccoJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
PKDPakistanJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
TUNTunisiaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
TURTurkeyJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XFASouth AfricaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XFESouth AfricaJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XFVSouth Africa (Vodacom)Jun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
XSGUnited Arab EmiratesJun 28, 2026day 0S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
AROArgentinaJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
BVOBoliviaJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
CHOChileJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
COOColombiaJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
GLONigeria (Glo)Jun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
GTOGuatemalaJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
MXOMexicoJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
PEOPeruJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
TPAPanamaJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
UPOUruguayJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
UYOUruguayJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
ZTOBrazilJun 29, 2026+1 dayS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
BKDBangladeshJun 29, 2026+1 dayS918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
INSIndiaJun 29, 2026+1 dayS918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
SLKSri LankaJun 29, 2026+1 dayS918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1
CDRDominican RepublicJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
CGUGuatemala (Claro)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
CHEChile (Entel)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
CHLChile (Claro)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
CHTChile (Movistar)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
CHXChileJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
COBColombia (Movistar)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
COLColombiaJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
COMColombia (Claro)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
CRCCosta RicaJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
CTIArgentina (Claro)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
DORDominican RepublicJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
EBEEcuadorJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
IUSMexico (AT&T)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
NBSLatin America (open market)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
PETPeru (Movistar)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
PGUGuatemalaJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
PNTPanamaJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
PSNArgentina (Personal)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
SAMOceaniaJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
TCEMexico (Telcel)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
TGPParaguayJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
TMMMyanmarJun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
UFNArgentina (Movistar)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
ZTABrazil (Claro)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
ZTMBrazil (TIM)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
ZVVBrazil (Vivo)Jun 30, 2026+2 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1
ECOEcuadorJul 2, 2026+4 daysS918BXXSAFZF5/S918BOWOAFZF5/S918BXXSAFZE1

Download and release notes

samloader download -m SM-S918B -r EUX -v S918BXXSAFZF5/S918BOXMAFZF5/S918BXXSAFZE1

Samsung's release notes and security patch level for this update: SM-S918B / EUX on doc.samsungmobile.com. What each part of the build number means: decode S918BXXSAFZF5.