F966BXXSBBZG3 – Galaxy Z Fold7 firmware

Build F966BXXSBBZG3 is a security update for the Galaxy Z Fold7 (SM-F966B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 19, 2026 (method) and has reached 68 regions so far. It raises the bootloader bit from 10 to 11: once installed, the device no longer accepts firmware with bit 10 or lower, so a downgrade to F966BXXSABZF4 is blocked. Samsung still serves this file.

Model
SM-F966B
Android
Android 16
Type
Security
Bootloader bit
11
First released
Jul 19, 2026
Regions
68

Rollout timeline by region

The date each region code (CSC) first received F966BXXSBBZG3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BOGFrance (Bouygues)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
EUXEurope (Multi-CSC)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
EUYEurope (Multi-CSC)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
MEOPortugal (MEO)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
MOBAustria (A1)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
MOTSlovenia (Telekom)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
MSRSerbiaJul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
PLSPoland (Plus)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
PRTPoland (Play)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
SFRFrance (SFR)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
SIMSlovenia (A1)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
SWCSwitzerlandJul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
TOPSerbia/MontenegroJul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
VIPCroatia (A1)Jul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XSAAustraliaJul 19, 2026day 0F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
CAUCaucasusJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
INSIndiaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
SEKUkraineJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
SINSingapore (Singtel)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
SKZKazakhstanJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
STHSingapore (StarHub)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XIDIndonesiaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XXVVietnamJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
GLBPhilippines (Globe)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
KSASaudi ArabiaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
MM1Singapore (M1)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
THLThailandJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XMEMalaysiaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XNZNew ZealandJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XSGUnited Arab EmiratesJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XSPSingaporeJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XTCPhilippinesJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
ACRGhanaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
AFRAfricaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
DKRSenegalJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
ECTNigeriaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
ILOIsraelJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
MIDMiddle EastJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
TURTurkeyJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XFASouth AfricaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
XFVSouth Africa (Vodacom)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
COMColombia (Claro)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
COOColombiaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
GTOGuatemalaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3
PEOPeruJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
PETPeru (Movistar)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
AROArgentinaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
CDRDominican RepublicJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
CGUGuatemala (Claro)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
CRCCosta RicaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
CTIArgentina (Claro)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
DORDominican RepublicJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
EBEEcuadorJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
ECOEcuadorJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
GLONigeria (Glo)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
MXOMexicoJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
PGUGuatemalaJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
PSNArgentina (Personal)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
TCEMexico (Telcel)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
TGPParaguayJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
UFNArgentina (Movistar)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
UPOUruguayJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
UYOUruguayJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
ZTABrazil (Claro)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
ZTMBrazil (TIM)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
ZTOBrazilJul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
ZVVBrazil (Vivo)Jul 20, 2026+1 dayF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3
CHOChileJul 26, 2026+7 daysF966BXXSBBZG3/F966BOWOBBZG3/F966BXXSBBZG3

Download and release notes

samloader download -m SM-F966B -r EUX -v F966BXXSBBZG3/F966BOXMBBZG3/F966BXXSBBZG3

Samsung's release notes and security patch level for this update: SM-F966B / EUX on doc.samsungmobile.com. What each part of the build number means: decode F966BXXSBBZG3.