Samsung Galaxy Z Fold8 (SM-F971B) Firmware Overview
What is the latest SM-F971B firmware?
F971BXXS3AZIK, released September 30, 2026 with Android 17. It is a security update on bootloader binary 3. The archive holds 61 official builds across 24 regions (CSC).
Is the Samsung Galaxy Z Fold8 still getting updates?
Yes. The newest build is from September 2026, and 21 of 24 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-F971B firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 1 to 3:
- Binary 3 — since Sep 2026
- Binary 2 — since Aug 2026
- Binary 1 — since Jul 2026
A phone already on binary 3 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 3 build. How to read a build number.
All SM-F971B firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
F971BXXS3AZIK
Security update
|
3 | EGY | 17 |
2026-09-30 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | XSA | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | EUY | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | GLB | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | CAC | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | XSG | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | ZVV | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | ACR | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | CAU | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | CDR | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | CGU | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | DKR | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | ECT | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | DOR | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | ECO | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | EON | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | EUX | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | THL | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | INS | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | TCE | 17 |
2026-09-23 | Download |
|
F971BXXS3AZIJ
Security update
|
3 | XID | 17 |
2026-09-23 | Download |
|
F971BXXS2AZH7
Security update
|
2 | EUX | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | XSA | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | TCE | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | CAC | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | INS | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | XSG | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | XID | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | THL | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | EON | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | EUY | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | GLB | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | GTO | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | ILO | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | ECT | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | ECO | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | DKR | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | DOR | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | CGU | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | CDR | 17 |
2026-08-10 | Download |
|
F971BXXS2AZH7
Security update
|
2 | CAU | 17 |
2026-08-10 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | GLO | 17 |
2026-07-28 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | XSA | 17 |
2026-07-25 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | GLB | 17 |
2026-07-25 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | XID | 17 |
2026-07-25 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | XSG | 17 |
2026-07-25 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | ACR | 17 |
2026-07-25 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | THL | 17 |
2026-07-25 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | DKR | 17 |
2026-07-25 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | ECT | 17 |
2026-07-25 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | GTO | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | EUY | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | ILO | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | TCE | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | INS | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | EON | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | ECO | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | ZVV | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | DOR | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | CAC | 17 |
2026-07-24 | Download |
|
F971BXXU1AZGI
Feature update
|
1 | CAU | 17 |
2026-07-24 | Download |
Latest SM-F971B 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 |
|---|---|---|---|---|
| ACR | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| CAC | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| CAU | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| CDR | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| CGU | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| DKR | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| DOR | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| ECO | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| ECT | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| EGY | F971BXXS3AZIK | 3 | 17 | 2026-09-30 |
| EON | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| EUX | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| EUY | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| GLB | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| GLO | F971BXXU1AZGI | 1 | 17 | 2026-07-28 |
| GTO | F971BXXS2AZH7 | 2 | 17 | 2026-08-10 |
| ILO | F971BXXS2AZH7 | 2 | 17 | 2026-08-10 |
| INS | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| TCE | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| THL | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| XID | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| XSA | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| XSG | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| ZVV | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
How to Flash SM-F971B Firmware
Put the Samsung Galaxy Z Fold8 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 3 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.