Samsung Galaxy Z Fold6 (SM-F956U1) Firmware Overview
What is the latest SM-F956U1 firmware?
F956U1UES4EZJ1, released October 14, 2026 with Android 17. It is a security update on bootloader binary 4. 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 Fold6 still getting updates?
Yes. The newest build is from October 2026, and 10 of 21 regions already have a build from that month; the rest usually follow within a few weeks.
Which Android versions did it get?
The SM-F956U1 builds in the archive run Android 16 to 17. The earliest build we have for each version:
- Android 17: F956U1UEU4EZIH (Sep 2026), 29 builds in total
- Android 16: F956U1UES4DZH5 (Aug 2026), 10 builds in total
Can I downgrade the SM-F956U1 firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 4:
- Binary 4 — since Aug 2026
All SM-F956U1 firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
F956U1UES4EZJ1
Security update
|
4 | TFN | 17 |
2026-10-14 | Download |
|
F956U1UES4EZJ1
Security update
|
4 | ATT | 17 |
2026-10-14 | Download |
|
F956U1UES4EZJ1
Security update
|
4 | VZW | 17 |
2026-10-14 | Download |
|
F956U1UES4EZJ1
Security update
|
4 | XAR | 17 |
2026-10-14 | Download |
|
F956U1UES4EZJ1
Security update
|
4 | CCT | 17 |
2026-10-14 | Download |
|
F956U1UES4EZJ1
Security update
|
4 | LRA | 17 |
2026-10-14 | Download |
|
F956U1UES4EZJ1
Security update
|
4 | AIO | 17 |
2026-10-14 | Download |
|
F956U1UES4EZJ1
Security update
|
4 | FKR | 17 |
2026-10-14 | Download |
|
F956U1UES4EZJ1
Security update
|
4 | ACG | 17 |
2026-10-14 | Download |
|
F956U1UES4EZJ1
Security update
|
4 | CHA | 17 |
2026-10-14 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | TFN | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | VZW | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | CCT | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | FKR | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | CHA | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | DSA | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | DSH | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | DSG | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | XAA | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | LRA | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | ATC | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | XAG | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | USC | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | TMB | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | AIO | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | ACG | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | XAR | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | TMK | 17 |
2026-09-20 | Download |
|
F956U1UEU4EZIH
Feature update
|
4 | ATT | 17 |
2026-09-20 | Download |
|
F956U1UES4DZH5
Security update
|
4 | PCT | 16 |
2026-08-20 | Download |
|
F956U1UES4DZH5
Security update
|
4 | LLA | 16 |
2026-08-20 | Download |
|
F956U1UES4DZH5
Security update
|
4 | XAA | 16 |
2026-08-12 | Download |
|
F956U1UES4DZH5
Security update
|
4 | TFN | 16 |
2026-08-12 | Download |
|
F956U1UES4DZH5
Security update
|
4 | XAR | 16 |
2026-08-12 | Download |
|
F956U1UES4DZH5
Security update
|
4 | TMK | 16 |
2026-08-12 | Download |
|
F956U1UES4DZH5
Security update
|
4 | ATT | 16 |
2026-08-12 | Download |
|
F956U1UES4DZH5
Security update
|
4 | XAG | 16 |
2026-08-12 | Download |
|
F956U1UES4DZH5
Security update
|
4 | ATC | 16 |
2026-08-12 | Download |
|
F956U1UES4DZH5
Security update
|
4 | LRA | 16 |
2026-08-12 | Download |
Latest SM-F956U1 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 | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
| AIO | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
| ATC | F956U1UEU4EZIH | 4 | 17 | 2026-09-20 |
| ATT | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
| CCT | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
| CHA | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
| DSA | F956U1UEU4EZIH | 4 | 17 | 2026-09-20 |
| DSG | F956U1UEU4EZIH | 4 | 17 | 2026-09-20 |
| DSH | F956U1UEU4EZIH | 4 | 17 | 2026-09-20 |
| FKR | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
| LLA | F956U1UES4DZH5 | 4 | 16 | 2026-08-20 |
| LRA | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
| PCT | F956U1UES4DZH5 | 4 | 16 | 2026-08-20 |
| TFN | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
| TMB | F956U1UEU4EZIH | 4 | 17 | 2026-09-20 |
| TMK | F956U1UEU4EZIH | 4 | 17 | 2026-09-20 |
| USC | F956U1UEU4EZIH | 4 | 17 | 2026-09-20 |
| VZW | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
| XAA | F956U1UEU4EZIH | 4 | 17 | 2026-09-20 |
| XAG | F956U1UEU4EZIH | 4 | 17 | 2026-09-20 |
| XAR | F956U1UES4EZJ1 | 4 | 17 | 2026-10-14 |
How to Flash SM-F956U1 Firmware
Put the Samsung Galaxy Z Fold6 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 4 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.