F721BXXSCIZG3 – Galaxy Z Flip4 firmware

Build F721BXXSCIZG3 is a security update for the Galaxy Z Flip4 (SM-F721B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 28, 2026 (method) and has reached 80 regions so far. It keeps bootloader bit 12, so downgrading to the previous build F721BXXSCIZF2 is still possible. Samsung still serves this file.

Model
SM-F721B
Android
Android 16
Type
Security
Bootloader bit
12
First released
Jul 28, 2026
Regions
80

Rollout timeline by region

The date each region code (CSC) first received F721BXXSCIZG3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACRGhanaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
AFGAfghanistanJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
AFRAfricaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
DKRSenegalJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
ECTNigeriaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
EGYEgyptJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XIDIndonesiaJul 28, 2026day 0F721BXXSCIZG3/F721BOLECIZE1/F721BXXSCIZE1
GLBPhilippines (Globe)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
ILOIsraelJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
KSASaudi ArabiaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
LYSLibyaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
MIDMiddle EastJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
MM1Singapore (M1)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
MWDMoroccoJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
PKDPakistanJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
SINSingapore (Singtel)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
STHSingapore (StarHub)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
THLThailandJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
TUNTunisiaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
TURTurkeyJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XFASouth AfricaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XFESouth AfricaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XFVSouth Africa (Vodacom)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XMEMalaysiaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XNZNew ZealandJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XSGUnited Arab EmiratesJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XSPSingaporeJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XTCPhilippinesJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
XXVVietnamJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
BOGFrance (Bouygues)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
BTBUnited Kingdom (BT)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
CAUCaucasusJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
EUXEurope (Multi-CSC)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
EVRUnited Kingdom (EE)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
MEOPortugal (MEO)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
MOBAustria (A1)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
MOTSlovenia (Telekom)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
MSRSerbiaJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
O2CCzech Republic (O2)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
PLSPoland (Plus)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
PRTPoland (Play)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
SEKUkraineJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
SFRFrance (SFR)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
SIMSlovenia (A1)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
SKZKazakhstanJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
SWCSwitzerlandJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
TIMItaly (TIM)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
TOPSerbia/MontenegroJul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
VIPCroatia (A1)Jul 28, 2026day 0F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
EUYEurope (Multi-CSC)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
BKDBangladeshJul 29, 2026+1 dayF721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
INSIndiaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
SLKSri LankaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
BVOBoliviaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
AROArgentinaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
CDRDominican RepublicJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
CGUGuatemala (Claro)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
CHOChileJul 29, 2026+1 dayF721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
COBColombia (Movistar)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
COMColombia (Claro)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
COOColombiaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
CRCCosta RicaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
EBEEcuadorJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
ECOEcuadorJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
GLONigeria (Glo)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
GTOGuatemalaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
MXOMexicoJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
PEOPeruJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
PETPeru (Movistar)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
PGUGuatemalaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
PNTPanamaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
SAMOceaniaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
TCEMexico (Telcel)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
TPAPanamaJul 29, 2026+1 dayF721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1
UPOUruguayJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
UYOUruguayJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
ZTABrazil (Claro)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
ZTMBrazil (TIM)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
ZTOBrazilJul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1
ZVVBrazil (Vivo)Jul 29, 2026+1 dayF721BXXSCIZG3/F721BOWOCIZE1/F721BXXSCIZE1

Download and release notes

samloader download -m SM-F721B -r EUX -v F721BXXSCIZG3/F721BOXMCIZE1/F721BXXSCIZE1

Samsung's release notes and security patch level for this update: SM-F721B / EUX on doc.samsungmobile.com. What each part of the build number means: decode F721BXXSCIZG3.