F966NKSSBBZG3 – Galaxy Z Fold7 firmware
Build F966NKSSBBZG3 is a security update for the Galaxy Z Fold7 (SM-F966N)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 8, 2026 (method) and has reached
4 regions so far. It raises the bootloader bit from 10 to 11: once installed, the device no longer accepts firmware with bit 10 or lower, so a downgrade to F966NKSUABZF1 is blocked. Samsung still serves this file.
- Model
- SM-F966N
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 11
- First released
- Jul 8, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received F966NKSSBBZG3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Jul 8, 2026 | day 0 | F966NKSSBBZG3/F966NOKRBBZG3/F966NKSSBBZG1 |
KTC | South Korea (KT) | Jul 8, 2026 | day 0 | F966NKSSBBZG3/F966NOKRBBZG3/F966NKSSBBZG1 |
LUC | South Korea (LG U+) | Jul 8, 2026 | day 0 | F966NKSSBBZG3/F966NOKRBBZG3/F966NKSSBBZG1 |
SKC | South Korea (SKT) | Jul 8, 2026 | day 0 | F966NKSSBBZG3/F966NOKRBBZG3/F966NKSSBBZG1 |
Download and release notes
samloader download -m SM-F966N -r KOO -v F966NKSSBBZG3/F966NOKRBBZG3/F966NKSSBBZG1Samsung's release notes and security patch level for this update: SM-F966N / KOO on doc.samsungmobile.com. What each part of the build number means: decode F966NKSSBBZG3.