F9660ZSUDCZJB – Galaxy Z Fold7 firmware
Build F9660ZSUDCZJB is a feature update for the Galaxy Z Fold7 (SM-F9660)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Nov 8, 2026 (method) and has reached
2 regions so far. It keeps bootloader bit 13, so downgrading to the previous build F9660ZCUDBZJ9 is still possible. Samsung still serves this file.
- Model
- SM-F9660
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 13
- First released
- Nov 8, 2026
- Regions
- 2
Not yet released in 1 regions that are still on an older build: CHC.
Rollout timeline by region
The date each region code (CSC) first received F9660ZSUDCZJB, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
BRI | Taiwan | Nov 8, 2026 | day 0 | F9660ZSUDCZJB/F9660OZSDCZJB/F9660ZCUDCZJ6 |
TGY | Hong Kong | Nov 8, 2026 | day 0 | F9660ZSUDCZJB/F9660OZSDCZJB/F9660ZCUDCZJ6 |
Download and release notes
samloader download -m SM-F9660 -r BRI -v F9660ZSUDCZJB/F9660OZSDCZJB/F9660ZCUDCZJ6Samsung's release notes and security patch level for this update: SM-F9660 / BRI on doc.samsungmobile.com. What each part of the build number means: decode F9660ZSUDCZJB.