F721BXXSCIZH3 – Galaxy Z Flip4 firmware
Build F721BXXSCIZH3 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 Sep 2, 2026 (method) and has reached
80 regions so far. It keeps bootloader bit 12, so downgrading to the previous build F721BXXSCIZG4 is still possible. Samsung still serves this file.
- Model
- SM-F721B
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 12
- First released
- Sep 2, 2026
- Regions
- 80
Rollout timeline by region
The date each region code (CSC) first received F721BXXSCIZH3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
EUY | Europe (Multi-CSC) | Sep 2, 2026 | day 0 | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
EUX | Europe (Multi-CSC) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
BOG | France (Bouygues) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
MEO | Portugal (MEO) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
MOT | Slovenia (Telekom) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
MSR | Serbia | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
BTB | United Kingdom (BT) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
EVR | United Kingdom (EE) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
MOB | Austria (A1) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
O2C | Czech Republic (O2) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
PLS | Poland (Plus) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
PRT | Poland (Play) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
SFR | France (SFR) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
SIM | Slovenia (A1) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
SWC | Switzerland | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
TIM | Italy (TIM) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
TOP | Serbia/Montenegro | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
VIP | Croatia (A1) | Sep 4, 2026 | +2 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XID | Indonesia | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOLECIZE1/F721BXXSCIZE1 |
DKR | Senegal | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
GLB | Philippines (Globe) | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
ILO | Israel | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
MID | Middle East | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
MM1 | Singapore (M1) | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
PKD | Pakistan | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
SIN | Singapore (Singtel) | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
STH | Singapore (StarHub) | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
THL | Thailand | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XFA | South Africa | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XFE | South Africa | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XFV | South Africa (Vodacom) | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XME | Malaysia | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XNZ | New Zealand | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XSG | United Arab Emirates | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XSP | Singapore | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XTC | Philippines | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
XXV | Vietnam | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
ACR | Ghana | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
AFG | Afghanistan | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
AFR | Africa | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
ECT | Nigeria | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
EGY | Egypt | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
KSA | Saudi Arabia | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
LYS | Libya | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
MWD | Morocco | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
TUN | Tunisia | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
TUR | Turkey | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
SEK | Ukraine | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
SKZ | Kazakhstan | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
CAU | Caucasus | Sep 6, 2026 | +4 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
ARO | Argentina | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
BVO | Bolivia | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
CDR | Dominican Republic | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
CGU | Guatemala (Claro) | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
CHO | Chile | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
COB | Colombia (Movistar) | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
UPO | Uruguay | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
UYO | Uruguay | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
TCE | Mexico (Telcel) | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
TPA | Panama | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
COM | Colombia (Claro) | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
COO | Colombia | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
CRC | Costa Rica | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
GLO | Nigeria (Glo) | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
PGU | Guatemala | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
GTO | Guatemala | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
MXO | Mexico | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
BKD | Bangladesh | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
INS | India | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
SLK | Sri Lanka | Sep 8, 2026 | +6 days | F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1 |
EBE | Ecuador | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
ECO | Ecuador | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
PEO | Peru | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
PET | Peru (Movistar) | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
PNT | Panama | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
SAM | Oceania | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
ZTA | Brazil (Claro) | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
ZTM | Brazil (TIM) | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
ZTO | Brazil | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
ZVV | Brazil (Vivo) | Sep 14, 2026 | +12 days | F721BXXSCIZH3/F721BOWOCIZH3/F721BXXSCIZE1 |
Download and release notes
samloader download -m SM-F721B -r EUX -v F721BXXSCIZH3/F721BOXMCIZE1/F721BXXSCIZE1Samsung'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 F721BXXSCIZH3.