Samsung Galaxy Z Fold8 Ultra (SM-F976N) Firmware Overview
What is the latest SM-F976N firmware?
F976NKSU3AZJ8, released October 16, 2026 with Android 17. It is a feature update on bootloader binary 3. The archive holds 24 official builds across 4 regions (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy Z Fold8 Ultra still getting updates?
Yes. The newest build is from October 2026, and 4 of 4 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-F976N 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 Jun 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-F976N firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
F976NKSU3AZJ8
Feature update
|
3 | KOO | 17 |
2026-10-16 | Download |
|
F976NKSU3AZJ8
Feature update
|
3 | KTC | 17 |
2026-10-16 | Download |
|
F976NKSU3AZJ8
Feature update
|
3 | SKC | 17 |
2026-10-16 | Download |
|
F976NKSU3AZJ8
Feature update
|
3 | LUC | 17 |
2026-10-16 | Download |
|
F976NKSS3AZIJ
Security update
|
3 | KOO | 17 |
2026-09-23 | Download |
|
F976NKSS3AZIJ
Security update
|
3 | KTC | 17 |
2026-09-23 | Download |
|
F976NKSS3AZIJ
Security update
|
3 | SKC | 17 |
2026-09-23 | Download |
|
F976NKSS3AZIJ
Security update
|
3 | LUC | 17 |
2026-09-23 | Download |
|
F976NKSU3AZI5
Feature update
|
3 | KOO | 17 |
2026-09-07 | Download |
|
F976NKSU3AZI5
Feature update
|
3 | KTC | 17 |
2026-09-07 | Download |
|
F976NKSU3AZI5
Feature update
|
3 | LUC | 17 |
2026-09-07 | Download |
|
F976NKSU3AZI5
Feature update
|
3 | SKC | 17 |
2026-09-07 | Download |
|
F976NKSS2AZH7
Security update
|
2 | KTC | 17 |
2026-08-10 | Download |
|
F976NKSS2AZH7
Security update
|
2 | LUC | 17 |
2026-08-10 | Download |
|
F976NKSS2AZH7
Security update
|
2 | SKC | 17 |
2026-08-10 | Download |
|
F976NKSS2AZH7
Security update
|
2 | KOO | 17 |
2026-08-10 | Download |
|
F976NKSU1AZGI
Feature update
|
1 | KOO | 17 |
2026-07-24 | Download |
|
F976NKSU1AZGI
Feature update
|
1 | KTC | 17 |
2026-07-24 | Download |
|
F976NKSU1AZGI
Feature update
|
1 | LUC | 17 |
2026-07-24 | Download |
|
F976NKSU1AZGI
Feature update
|
1 | SKC | 17 |
2026-07-24 | Download |
|
F976NKSU1AZFW
Feature update
|
1 | KOO | 17 |
2026-06-25 | Download |
|
F976NKSU1AZFW
Feature update
|
1 | KTC | 17 |
2026-06-25 | Download |
|
F976NKSU1AZFW
Feature update
|
1 | LUC | 17 |
2026-06-25 | Download |
|
F976NKSU1AZFW
Feature update
|
1 | SKC | 17 |
2026-06-25 | Download |
Latest SM-F976N 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 |
|---|---|---|---|---|
| KOO | F976NKSU3AZJ8 | 3 | 17 | 2026-10-16 |
| KTC | F976NKSU3AZJ8 | 3 | 17 | 2026-10-16 |
| LUC | F976NKSU3AZJ8 | 3 | 17 | 2026-10-16 |
| SKC | F976NKSU3AZJ8 | 3 | 17 | 2026-10-16 |
How to Flash SM-F976N Firmware
Put the Samsung Galaxy Z Fold8 Ultra 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.