F966USQUCCZIH – Galaxy Z Fold7 firmware
Build F966USQUCCZIH is a feature update for the Galaxy Z Fold7 (SM-F966U)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 1, 2026 (method) and has reached
7 regions so far. It keeps bootloader bit 12, so downgrading to the previous build F966USQSCBZH3 is still possible. Samsung still serves this file.
- Model
- SM-F966U
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 12
- First released
- Oct 1, 2026
- Regions
- 7
Rollout timeline by region
The date each region code (CSC) first received F966USQUCCZIH, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
ATT | USA (AT&T) | Oct 1, 2026 | day 0 | F966USQUCCZIH/F966UOYNCCZIH/F966USQUCCZIH |
USC | USA (US Cellular) | Oct 4, 2026 | +3 days | F966USQUCCZIH/F966UOYNCCZIH/F966USQUCCZIH |
TMK | USA (MetroPCS) | Oct 4, 2026 | +3 days | F966USQUCCZIH/F966UOYNCCZIH/F966USQUCCZIH |
TMB | USA (T-Mobile) | Oct 4, 2026 | +3 days | F966USQUCCZIH/F966UOYNCCZIH/F966USQUCCZIH |
VZW | USA (Verizon) | Oct 5, 2026 | +4 days | F966USQUCCZIH/F966UOYNCCZIH/F966USQUCCZIH |
XAA | USA (unlocked) | Oct 6, 2026 | +5 days | F966USQUCCZIH/F966UOYNCCZIH/F966USQUCCZIH |
CCT | USA (Comcast) | Oct 6, 2026 | +5 days | F966USQUCCZIH/F966UOYNCCZIH/F966USQUCCZIH |
Download and release notes
samloader download -m SM-F966U -r XAA -v F966USQUCCZIH/F966UOYNCCZIH/F966USQUCCZIHSamsung's release notes and security patch level for this update: SM-F966U / XAA on doc.samsungmobile.com. What each part of the build number means: decode F966USQUCCZIH.