S918BXXSAFZG1 – Galaxy S23 Ultra firmware

Build S918BXXSAFZG1 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 Jul 26, 2026 (method) and has reached 98 regions so far. It keeps bootloader bit 10, so downgrading to the previous build S918BXXSAFZF5 is still possible. Samsung still serves this file.

Model
SM-S918B
Android
Android 16
Type
Security
Bootloader bit
10
First released
Jul 26, 2026
Regions
98

Rollout timeline by region

The date each region code (CSC) first received S918BXXSAFZG1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
XIDIndonesiaJul 26, 2026day 0S918BXXSAFZG1/S918BOLEAFZG1/S918BXXSAFZE1
ACRGhanaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
AFGAfghanistanJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
AFRAfricaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
DKRSenegalJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
ECTNigeriaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
EGYEgyptJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
GLBPhilippines (Globe)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
ILOIsraelJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
KSASaudi ArabiaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
LYSLibyaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
MIDMiddle EastJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
MM1Singapore (M1)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
MWDMoroccoJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
OPSAustralia (Optus)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
PKDPakistanJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
SINSingapore (Singtel)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
STHSingapore (StarHub)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
TELAustralia (Telstra)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
THLThailandJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
TUNTunisiaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
TURTurkeyJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
VAUAustralia (Vodafone)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XFASouth AfricaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XFESouth AfricaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XFVSouth Africa (Vodacom)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XMEMalaysiaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XNZNew ZealandJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XSAAustraliaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XSGUnited Arab EmiratesJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XSPSingaporeJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XTCPhilippinesJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
XXVVietnamJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
BOGFrance (Bouygues)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
BTBUnited Kingdom (BT)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
CAUCaucasusJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
EUXEurope (Multi-CSC)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
EUYEurope (Multi-CSC)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
EVRUnited Kingdom (EE)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
MEOPortugal (MEO)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
MOBAustria (A1)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
MOTSlovenia (Telekom)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
MSRSerbiaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
O2CCzech Republic (O2)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
PLSPoland (Plus)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
PRTPoland (Play)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
SEKUkraineJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
SERRussiaJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
SFRFrance (SFR)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
SIMSlovenia (A1)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
SKZKazakhstanJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
SWCSwitzerlandJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
TIMItaly (TIM)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
TOPSerbia/MontenegroJul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
VIPCroatia (A1)Jul 26, 2026day 0S918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
BKDBangladeshJul 27, 2026+1 dayS918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
INSIndiaJul 27, 2026+1 dayS918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
SLKSri LankaJul 27, 2026+1 dayS918BXXSAFZG1/S918BOXMAFZG1/S918BXXSAFZE1
AROArgentinaJul 28, 2026+2 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
BVOBoliviaJul 28, 2026+2 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
CDRDominican RepublicJul 28, 2026+2 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
CHEChile (Entel)Jul 28, 2026+2 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
CHLChile (Claro)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
CHOChileJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
CHTChile (Movistar)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
CHXChileJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
COBColombia (Movistar)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
COLColombiaJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
COMColombia (Claro)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
COOColombiaJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
CTIArgentina (Claro)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
EBEEcuadorJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
ECOEcuadorJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
GTOGuatemalaJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
IUSMexico (AT&T)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
MXOMexicoJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
PEOPeruJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
PETPeru (Movistar)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
PNTPanamaJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
PSNArgentina (Personal)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
SAMOceaniaJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
TCEMexico (Telcel)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
TGPParaguayJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
TMMMyanmarJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
TPAPanamaJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
UFNArgentina (Movistar)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
UPOUruguayJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
UYOUruguayJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
ZTABrazil (Claro)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
ZTMBrazil (TIM)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
ZTOBrazilJul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
ZVVBrazil (Vivo)Jul 29, 2026+3 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
CGUGuatemala (Claro)Jul 30, 2026+4 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
CRCCosta RicaJul 30, 2026+4 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
DORDominican RepublicJul 30, 2026+4 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
GLONigeria (Glo)Jul 30, 2026+4 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
NBSLatin America (open market)Jul 30, 2026+4 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1
PGUGuatemalaJul 30, 2026+4 daysS918BXXSAFZG1/S918BOWOAFZG1/S918BXXSAFZE1

Download and release notes

samloader download -m SM-S918B -r EUX -v S918BXXSAFZG1/S918BOXMAFZG1/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 S918BXXSAFZG1.