S948BXXU4BZI6 – Galaxy S26 Ultra firmware

Build S948BXXU4BZI6 is a feature update for the Galaxy S26 Ultra (SM-S948B) on Android 17 (One UI 9). It first appeared on Samsung's servers on Sep 28, 2026 (method) and has reached 78 regions so far. It keeps bootloader bit 4, so downgrading to the previous build S948BXXS4AZHL is still possible. Samsung still serves this file.

Model
SM-S948B
Android
Android 17
Type
Feature
Bootloader bit
4
First released
Sep 28, 2026
Regions
78

Rollout timeline by region

The date each region code (CSC) first received S948BXXU4BZI6, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BOGFrance (Bouygues)Sep 28, 2026day 0S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
MOBAustria (A1)Sep 28, 2026day 0S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
PLSPoland (Plus)Sep 28, 2026day 0S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
PRTPoland (Play)Sep 28, 2026day 0S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
SFRFrance (SFR)Sep 28, 2026day 0S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
SIMSlovenia (A1)Sep 28, 2026day 0S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
SWCSwitzerlandSep 28, 2026day 0S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
EUXEurope (Multi-CSC)Sep 28, 2026day 0S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
EUYEurope (Multi-CSC)Sep 28, 2026day 0S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
GTOGuatemalaSep 29, 2026+1 dayS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
MXOMexicoSep 29, 2026+1 dayS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
TCEMexico (Telcel)Sep 29, 2026+1 dayS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
ZTABrazil (Claro)Sep 29, 2026+1 dayS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
ZTMBrazil (TIM)Sep 29, 2026+1 dayS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
ZTOBrazilSep 29, 2026+1 dayS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
ZVVBrazil (Vivo)Sep 29, 2026+1 dayS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
BKDBangladeshSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
SLKSri LankaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
ACRGhanaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
AFGAfghanistanSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
AFRAfricaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
CAUCaucasusSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
DKRSenegalSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
ECTNigeriaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
EGYEgyptSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
GLBPhilippines (Globe)Sep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
ILOIsraelSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
INSIndiaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
KSASaudi ArabiaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
LYSLibyaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
MIDMiddle EastSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
MM1Singapore (M1)Sep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
MWDMoroccoSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
NPBNepalSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
PKDPakistanSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
SERRussiaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
SINSingapore (Singtel)Sep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
SKZKazakhstanSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
STHSingapore (StarHub)Sep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
THLThailandSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
TUNTunisiaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XFASouth AfricaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XFVSouth Africa (Vodacom)Sep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XIDIndonesiaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XMEMalaysiaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XNZNew ZealandSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XSAAustraliaSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XSGUnited Arab EmiratesSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XSPSingaporeSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XTCPhilippinesSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
XXVVietnamSep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
TURTurkeySep 30, 2026+2 daysS948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9
IUSMexico (AT&T)Sep 30, 2026+2 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
AROArgentinaOct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
BVOBoliviaOct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
CDRDominican RepublicOct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
COBColombia (Movistar)Oct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
COMColombia (Claro)Oct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
COOColombiaOct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
CTIArgentina (Claro)Oct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
ECOEcuadorOct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
PEOPeruOct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
PETPeru (Movistar)Oct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
PNTPanamaOct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
PSNArgentina (Personal)Oct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
SAMOceaniaOct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
UFNArgentina (Movistar)Oct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
UYOUruguayOct 7, 2026+9 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
CGUGuatemala (Claro)Oct 15, 2026+17 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
DORDominican RepublicOct 15, 2026+17 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
GLONigeria (Glo)Oct 15, 2026+17 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
PGUGuatemalaOct 15, 2026+17 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
CHEChile (Entel)Nov 6, 2026+39 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
CHLChile (Claro)Nov 6, 2026+39 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
CHOChileNov 6, 2026+39 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
CHTChile (Movistar)Nov 6, 2026+39 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
TGPParaguayNov 6, 2026+39 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9
UPOUruguayNov 6, 2026+39 daysS948BXXU4BZI6/S948BOWO4BZI6/S948BXXU4BZI9

Download and release notes

samloader download -m SM-S948B -r EUX -v S948BXXU4BZI6/S948BOXM4BZI6/S948BXXU4BZI9

Samsung's release notes and security patch level for this update: SM-S948B / EUX on doc.samsungmobile.com. What each part of the build number means: decode S948BXXU4BZI6.