Samsung Galaxy Z Fold8 (SM-F971B) Firmware Overview
What is the latest SM-F971B firmware?
F971BXXU3AZJC, released October 29, 2026 with Android 17. It is a feature update on bootloader binary 3. The archive holds 104 official builds across 36 regions (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy Z Fold8 still getting updates?
Yes. The newest build is from October 2026, and 30 of 36 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 |
|---|---|---|---|---|---|
|
F971BXXU3AZJC
Feature update
|
3 | KSA | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | XFV | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | XXV | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | PGU | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | ILP | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | XFA | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | SKZ | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | EUY | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | EGY | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | CAC | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | ACR | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | DKR | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | XSG | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | CAU | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | ECT | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | EUX | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | ILO | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | PRT | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | SEK | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | PLS | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJC
Feature update
|
3 | TUR | 17 |
2026-10-29 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | EGY | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | XSG | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | CAC | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | ZVV | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | CAU | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | ACR | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | DKR | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | ECT | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | EUX | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | XNZ | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | TCE | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | XID | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | THL | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | INS | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | GLB | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | XSA | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | GTO | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | ILO | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | SEK | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | PRT | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | PLS | 17 |
2026-10-16 | Download |
|
F971BXXU3AZJ8
Feature update
|
3 | PGU | 17 |
2026-10-16 | Download |
|
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 | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| CAC | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| CAU | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| CDR | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| CGU | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| DKR | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| DOR | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| ECO | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| ECT | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| EGY | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| EON | F971BXXS3AZIJ | 3 | 17 | 2026-09-23 |
| EUX | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| EUY | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| GLB | F971BXXU3AZJ8 | 3 | 17 | 2026-10-16 |
| GLO | F971BXXU1AZGI | 1 | 17 | 2026-07-28 |
| GTO | F971BXXU3AZJ8 | 3 | 17 | 2026-10-16 |
| ILO | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| ILP | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| INS | F971BXXU3AZJ8 | 3 | 17 | 2026-10-16 |
| KSA | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| PGU | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| PLS | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| PRT | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| SEK | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| SKZ | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| TCE | F971BXXU3AZJ8 | 3 | 17 | 2026-10-16 |
| THL | F971BXXU3AZJ8 | 3 | 17 | 2026-10-16 |
| TUR | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| XFA | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| XFV | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| XID | F971BXXU3AZJ8 | 3 | 17 | 2026-10-16 |
| XNZ | F971BXXU3AZJ8 | 3 | 17 | 2026-10-16 |
| XSA | F971BXXU3AZJ8 | 3 | 17 | 2026-10-16 |
| XSG | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| XXV | F971BXXU3AZJC | 3 | 17 | 2026-10-29 |
| ZVV | F971BXXU3AZJ8 | 3 | 17 | 2026-10-16 |
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.