Samsung Galaxy Z Flip4 (SM-F721B) Firmware Overview
What is the latest SM-F721B firmware?
F721BXXSCIZH3, released August 21, 2026 with Android 16. It is a security update on bootloader binary 12. The archive holds 145 official builds across 73 regions (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy Z Flip4 still getting updates?
Yes. The newest build is from August 2026, and 45 of 73 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-F721B firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 10 to 12:
- Binary 12 — since May 2026
- Binary 11 — since Feb 2026
- Binary 10 — since Jan 2026
A phone already on binary 12 rejects builds with a lower binary in Odin ("SW REV CHECK FAIL"), so it can go back to an earlier Android version only if that version has a binary 12 build. How to read a build number.
All SM-F721B firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
F721BXXSCIZH3
Security update
|
12 | XID | 16 |
2026-08-21 | Download |
|
F721BXXSCIZH3
Security update
|
12 | ECO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | ZTO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | ZTA | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | PEO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | ZTM | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | UYO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | CRC | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | CGU | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | ARO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | UPO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | GLO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | MXO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | CDR | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | PGU | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | BVO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | COM | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | COB | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | TCE | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH3
Security update
|
12 | COO | 16 |
2026-08-20 | Download |
|
F721BXXSCIZH4
Security update
|
12 | XSA | 16 |
2026-08-17 | Download |
|
F721BXXSCIZH4
Security update
|
12 | TEL | 16 |
2026-08-17 | Download |
|
F721BXXSCIZH4
Security update
|
12 | OPS | 16 |
2026-08-17 | Download |
|
F721BXXSCIZH4
Security update
|
12 | VAU | 16 |
2026-08-17 | Download |
|
F721BXXSCIZH3
Security update
|
12 | SEK | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | MOT | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | EVR | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | TIM | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | MEO | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | SWC | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | MET | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | PLS | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | SFR | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | EUX | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | BTE | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | TOP | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | VIP | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | BTB | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | EUY | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | MSR | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | SIM | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | O2C | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | BOG | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | PRT | 16 |
2026-08-14 | Download |
|
F721BXXSCIZH3
Security update
|
12 | MOB | 16 |
2026-08-14 | Download |
|
F721BXXSCIZG3
Security update
|
12 | ZTM | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | PEO | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | ARO | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | EON | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | SAM | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | UPO | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | PGU | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | ZTA | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | COB | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | TCE | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | COO | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | PET | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | CGU | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | PNT | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | CRC | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | UYO | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | EBE | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | GLO | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | CDR | 16 |
2026-07-10 | Download |
|
F721BXXSCIZG3
Security update
|
12 | COM | 16 |
2026-07-10 | Download |
|
F721BXXSCIZF1
Security update
|
12 | ZVV | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | ARO | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | GLO | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | EBE | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | PET | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | CGU | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | CDR | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | ZTA | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | PGU | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | COB | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | TCE | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | MXO | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | ECO | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | BVO | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | COM | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | ZTO | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | UPO | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | SAM | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | EON | 16 |
2026-06-16 | Download |
|
F721BXXSCIZF1
Security update
|
12 | UYO | 16 |
2026-06-16 | Download |
|
F721BXXSCIZE1
Security update
|
12 | BVO | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | ECO | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | COM | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | MXO | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | COB | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | COO | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | PEO | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | XID | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | EON | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | ARO | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | CGU | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | PET | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | EBE | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | PGU | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | ZTO | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | CDR | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | ZTA | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | TCE | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | ZTM | 16 |
2026-05-08 | Download |
|
F721BXXSCIZE1
Security update
|
12 | UPO | 16 |
2026-05-08 | Download |
|
F721BXXSBIZB6
Security update
|
11 | SLK | 16 |
2026-03-05 | Download |
|
F721BXXSBIZB6
Security update
|
11 | NPL | 16 |
2026-03-05 | Download |
|
F721BXXSBIZB6
Security update
|
11 | INS | 16 |
2026-03-05 | Download |
|
F721BXXSBIZB6
Security update
|
11 | BKD | 16 |
2026-03-05 | Download |
|
F721BXXSBIZB6
Security update
|
11 | ZVV | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | ZTM | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | ZTA | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | ZTO | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | COM | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | ARO | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | PNT | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | PGU | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | COO | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | TPA | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | CHO | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | SAM | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | CGU | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | GLO | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | CDR | 16 |
2026-03-04 | Download |
|
F721BXXSBIZB6
Security update
|
11 | CRC | 16 |
2026-03-04 | Download |
|
F721BXXSAIZA1
Security update
|
10 | ILP | 16 |
2026-02-02 | Download |
|
F721BXXSAIZA1
Security update
|
10 | ILO | 16 |
2026-02-02 | Download |
|
F721BXXSAIZA1
Security update
|
10 | INS | 16 |
2026-01-29 | Download |
|
F721BXXSAIZA1
Security update
|
10 | BKD | 16 |
2026-01-29 | Download |
|
F721BXXSAIZA1
Security update
|
10 | SLK | 16 |
2026-01-29 | Download |
|
F721BXXSAIZA1
Security update
|
10 | NPL | 16 |
2026-01-29 | Download |
|
F721BXXSAIZA1
Security update
|
10 | XSG | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | XFV | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | XFE | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | XFA | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | TUR | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | TUN | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | PKD | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | MWD | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | MID | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | LYS | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | KSA | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | FWD | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | EGY | 16 |
2026-01-28 | Download |
|
F721BXXSAIZA1
Security update
|
10 | ECT | 16 |
2026-01-28 | Download |
Latest SM-F721B Firmware by Region
The newest build for each region (CSC) code. Not sure which region your phone uses? See the CSC code guide.
| Region | Latest build | Bit | Android | Date |
|---|---|---|---|---|
| ARO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| BKD | F721BXXSBIZB6 | 11 | 16 | 2026-03-05 |
| BOG | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| BTB | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| BTE | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| BVO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| CDR | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| CGU | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| CHO | F721BXXSBIZB6 | 11 | 16 | 2026-03-04 |
| COB | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| COM | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| COO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| CRC | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| EBE | F721BXXSCIZG3 | 12 | 16 | 2026-07-10 |
| ECO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| ECT | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| EGY | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| EON | F721BXXSCIZG3 | 12 | 16 | 2026-07-10 |
| EUX | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| EUY | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| EVR | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| FWD | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| GLO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| ILO | F721BXXSAIZA1 | 10 | 16 | 2026-02-02 |
| ILP | F721BXXSAIZA1 | 10 | 16 | 2026-02-02 |
| INS | F721BXXSBIZB6 | 11 | 16 | 2026-03-05 |
| KSA | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| LYS | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| MEO | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| MET | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| MID | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| MOB | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| MOT | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| MSR | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| MWD | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| MXO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| NPL | F721BXXSBIZB6 | 11 | 16 | 2026-03-05 |
| O2C | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| OPS | F721BXXSCIZH4 | 12 | 16 | 2026-08-17 |
| PEO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| PET | F721BXXSCIZG3 | 12 | 16 | 2026-07-10 |
| PGU | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| PKD | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| PLS | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| PNT | F721BXXSCIZG3 | 12 | 16 | 2026-07-10 |
| PRT | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| SAM | F721BXXSCIZG3 | 12 | 16 | 2026-07-10 |
| SEK | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| SFR | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| SIM | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| SLK | F721BXXSBIZB6 | 11 | 16 | 2026-03-05 |
| SWC | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| TCE | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| TEL | F721BXXSCIZH4 | 12 | 16 | 2026-08-17 |
| TIM | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| TOP | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| TPA | F721BXXSBIZB6 | 11 | 16 | 2026-03-04 |
| TUN | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| TUR | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| UPO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| UYO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| VAU | F721BXXSCIZH4 | 12 | 16 | 2026-08-17 |
| VIP | F721BXXSCIZH3 | 12 | 16 | 2026-08-14 |
| XFA | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| XFE | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| XFV | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| XID | F721BXXSCIZH3 | 12 | 16 | 2026-08-21 |
| XSA | F721BXXSCIZH4 | 12 | 16 | 2026-08-17 |
| XSG | F721BXXSAIZA1 | 10 | 16 | 2026-01-28 |
| ZTA | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| ZTM | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| ZTO | F721BXXSCIZH3 | 12 | 16 | 2026-08-20 |
| ZVV | F721BXXSCIZF1 | 12 | 16 | 2026-06-16 |
How to Flash SM-F721B Firmware
Put the Samsung Galaxy Z Flip4 into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with Bit 12 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.