S918BXXSAFZH3 – Galaxy S23 Ultra firmware

Build S918BXXSAFZH3 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 Sep 1, 2026 (method) and has reached 98 regions so far. It keeps bootloader bit 10, so downgrading to the previous build S918BXXSAFZG1 is still possible. Samsung still serves this file.

Model
SM-S918B
Android
Android 16
Type
Security
Bootloader bit
10
First released
Sep 1, 2026
Regions
98

Rollout timeline by region

The date each region code (CSC) first received S918BXXSAFZH3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
SEKUkraineSep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
SKZKazakhstanSep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
BOGFrance (Bouygues)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
BTBUnited Kingdom (BT)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
CAUCaucasusSep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
EUXEurope (Multi-CSC)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
EUYEurope (Multi-CSC)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
EVRUnited Kingdom (EE)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
MEOPortugal (MEO)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
MOBAustria (A1)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
MOTSlovenia (Telekom)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
MSRSerbiaSep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
O2CCzech Republic (O2)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
PLSPoland (Plus)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
PRTPoland (Play)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
SERRussiaSep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
SFRFrance (SFR)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
SIMSlovenia (A1)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
SWCSwitzerlandSep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
TIMItaly (TIM)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
TOPSerbia/MontenegroSep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
VIPCroatia (A1)Sep 1, 2026day 0S918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
BKDBangladeshSep 2, 2026+1 dayS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
INSIndiaSep 2, 2026+1 dayS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
SLKSri LankaSep 2, 2026+1 dayS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XIDIndonesiaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOLEAFZH3/S918BXXSAFZE1
BVOBoliviaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
CDRDominican RepublicSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
AROArgentinaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
CGUGuatemala (Claro)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
COBColombia (Movistar)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
COLColombiaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
COMColombia (Claro)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
COOColombiaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
CRCCosta RicaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
CTIArgentina (Claro)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
DORDominican RepublicSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
GLONigeria (Glo)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
GTOGuatemalaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
NBSLatin America (open market)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
PGUGuatemalaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
PSNArgentina (Personal)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
UFNArgentina (Movistar)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
TGPParaguaySep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
TPAPanamaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
ZTABrazil (Claro)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
ZTMBrazil (TIM)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
UPOUruguaySep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
UYOUruguaySep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
ZVVBrazil (Vivo)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
ZTOBrazilSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
EBEEcuadorSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
ECOEcuadorSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
IUSMexico (AT&T)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
MXOMexicoSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
PEOPeruSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
PETPeru (Movistar)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
PNTPanamaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
SAMOceaniaSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
TCEMexico (Telcel)Sep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
TMMMyanmarSep 3, 2026+2 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
GLBPhilippines (Globe)Sep 4, 2026+3 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
OPSAustralia (Optus)Sep 4, 2026+3 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
TELAustralia (Telstra)Sep 4, 2026+3 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
THLThailandSep 4, 2026+3 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
VAUAustralia (Vodafone)Sep 4, 2026+3 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XMEMalaysiaSep 4, 2026+3 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XSAAustraliaSep 4, 2026+3 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XTCPhilippinesSep 4, 2026+3 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XXVVietnamSep 4, 2026+3 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
ACRGhanaSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
AFGAfghanistanSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
AFRAfricaSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
DKRSenegalSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
ECTNigeriaSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
EGYEgyptSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
ILOIsraelSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
KSASaudi ArabiaSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
LYSLibyaSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
MIDMiddle EastSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
MM1Singapore (M1)Sep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
MWDMoroccoSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
PKDPakistanSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
SINSingapore (Singtel)Sep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
STHSingapore (StarHub)Sep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
TUNTunisiaSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
TURTurkeySep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XFASouth AfricaSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XFESouth AfricaSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XFVSouth Africa (Vodacom)Sep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XNZNew ZealandSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XSGUnited Arab EmiratesSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
XSPSingaporeSep 6, 2026+5 daysS918BXXSAFZH3/S918BOXMAFZH3/S918BXXSAFZE1
CHEChile (Entel)Sep 10, 2026+9 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
CHLChile (Claro)Sep 10, 2026+9 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
CHOChileSep 10, 2026+9 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
CHTChile (Movistar)Sep 10, 2026+9 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1
CHXChileSep 10, 2026+9 daysS918BXXSAFZH3/S918BOWOAFZH3/S918BXXSAFZE1

Download and release notes

samloader download -m SM-S918B -r EUX -v S918BXXSAFZH3/S918BOXMAFZH3/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 S918BXXSAFZH3.