F966BXXSABZF4 – Galaxy Z Fold7 firmware
Build F966BXXSABZF4 is a security update for the Galaxy Z Fold7 (SM-F966B)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 1, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 10, so downgrading to the previous build F966BXXUABZF1 is still possible. Samsung still serves this file.
- Model
- SM-F966B
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 10
- First released
- Jul 1, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received F966BXXSABZF4, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
XID | Indonesia | Jul 1, 2026 | day 0 | F966BXXSABZF4/F966BOXMABZF4/F966BXXSABZF4 |
Download and release notes
samloader download -m SM-F966B -r XID -v F966BXXSABZF4/F966BOXMABZF4/F966BXXSABZF4Samsung's release notes and security patch level for this update: SM-F966B / XID on doc.samsungmobile.com. What each part of the build number means: decode F966BXXSABZF4.