F976NKSU3AZJ8 – Galaxy Z Fold8 Ultra firmware
Build F976NKSU3AZJ8 is a feature update for the Galaxy Z Fold8 Ultra (SM-F976N)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 25, 2026 (method) and has reached
4 regions so far. It keeps bootloader bit 3, so downgrading to the previous build F976NKSS3AZIJ is still possible. Samsung still serves this file.
- Model
- SM-F976N
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 3
- First released
- Oct 25, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received F976NKSU3AZJ8, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Oct 25, 2026 | day 0 | F976NKSU3AZJ8/F976NOKR3AZJ8/F976NKSU3AZI1 |
KTC | South Korea (KT) | Oct 25, 2026 | day 0 | F976NKSU3AZJ8/F976NOKR3AZJ8/F976NKSU3AZI1 |
LUC | South Korea (LG U+) | Oct 25, 2026 | day 0 | F976NKSU3AZJ8/F976NOKR3AZJ8/F976NKSU3AZI1 |
SKC | South Korea (SKT) | Oct 25, 2026 | day 0 | F976NKSU3AZJ8/F976NOKR3AZJ8/F976NKSU3AZI1 |
Download and release notes
samloader download -m SM-F976N -r KOO -v F976NKSU3AZJ8/F976NOKR3AZJ8/F976NKSU3AZI1Samsung's release notes and security patch level for this update: SM-F976N / KOO on doc.samsungmobile.com. What each part of the build number means: decode F976NKSU3AZJ8.