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).
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.