F958NKSS4EZJ1 – Galaxy Z Fold Special Edition firmware
Build F958NKSS4EZJ1 is a security update for the Galaxy Z Fold Special Edition (SM-F958N)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 26, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 4, so downgrading to the previous build F958NKSU4EZIH is still possible. Samsung still serves this file.
- Model
- SM-F958N
- Android
- Android 17
- Type
- Security
- Bootloader bit
- 4
- First released
- Oct 26, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received F958NKSS4EZJ1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Oct 26, 2026 | day 0 | F958NKSS4EZJ1/F958NOKR4EZJ1/F958NKSU4EZI4 |
Download and release notes
samloader download -m SM-F958N -r KOO -v F958NKSS4EZJ1/F958NOKR4EZJ1/F958NKSU4EZI4Samsung's release notes and security patch level for this update: SM-F958N / KOO on doc.samsungmobile.com. What each part of the build number means: decode F958NKSS4EZJ1.