Samsung Galaxy Z Fold8 (SM-F971U1) Firmware Overview
What is the latest SM-F971U1 firmware?
F971U1UEU3AZJ8, released October 16, 2026 with Android 17. It is a feature update on bootloader binary 3. The archive holds 39 official builds across 21 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 19 of 21 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-F971U1 firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 3:
- Binary 3 — since Sep 2026
All SM-F971U1 firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
F971U1UEU3AZJ8
Feature update
|
3 | XAG | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | VZW | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | TMB | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | TFN | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | SPT | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | CCT | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | DSG | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | DSA | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | DSH | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | CHA | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | FKR | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | AIO | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | XAR | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | TMK | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | LRA | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | XAA | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | ATT | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | ACG | 17 |
2026-10-16 | Download |
|
F971U1UEU3AZJ8
Feature update
|
3 | ATC | 17 |
2026-10-16 | Download |
|
F971U1UES3AZIL
Security update
|
3 | PCT | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | XAR | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | LLA | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | AIO | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | TMK | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | LRA | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | ACG | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | XAA | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | ATC | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | ATT | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | CCT | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | CHA | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | DSA | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | DSG | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | DSH | 17 |
2026-09-28 | Download |
|
F971U1UES3AZIL
Security update
|
3 | FKR | 17 |
2026-09-28 | Download |
|
F971U1UEU3AZI8
Feature update
|
3 | ATC | 17 |
2026-09-16 | Download |
|
F971U1UEU3AZI8
Feature update
|
3 | ATT | 17 |
2026-09-16 | Download |
|
F971U1UEU3AZI8
Feature update
|
3 | CHA | 17 |
2026-09-16 | Download |
|
F971U1UEU3AZI8
Feature update
|
3 | FKR | 17 |
2026-09-16 | Download |
Latest SM-F971U1 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 |
|---|---|---|---|---|
| ACG | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| AIO | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| ATC | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| ATT | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| CCT | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| CHA | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| DSA | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| DSG | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| DSH | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| FKR | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| LLA | F971U1UES3AZIL | 3 | 17 | 2026-09-28 |
| LRA | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| PCT | F971U1UES3AZIL | 3 | 17 | 2026-09-28 |
| SPT | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| TFN | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| TMB | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| TMK | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| VZW | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| XAA | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| XAG | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
| XAR | F971U1UEU3AZJ8 | 3 | 17 | 2026-10-16 |
How to Flash SM-F971U1 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.