F956USQS4EZJ1 – Galaxy Z Fold6 firmware
Build F956USQS4EZJ1 is a security update for the Galaxy Z Fold6 (SM-F956U)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 26, 2026 (method) and has reached
7 regions so far. It keeps bootloader bit 4, so downgrading to the previous build F956USQU4EZIH is still possible. Samsung still serves this file.
- Model
- SM-F956U
- Android
- Android 17
- Type
- Security
- Bootloader bit
- 4
- First released
- Oct 26, 2026
- Regions
- 7
Rollout timeline by region
The date each region code (CSC) first received F956USQS4EZJ1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
ATT | USA (AT&T) | Oct 26, 2026 | day 0 | F956USQS4EZJ1/F956UOYN4EZJ1/F956USQS4EZJ1 |
CCT | USA (Comcast) | Oct 28, 2026 | +2 days | F956USQS4EZJ1/F956UOYN4EZJ1/F956USQS4EZJ1 |
VZW | USA (Verizon) | Oct 28, 2026 | +2 days | F956USQS4EZJ1/F956UOYN4EZJ1/F956USQS4EZJ1 |
XAA | USA (unlocked) | Oct 28, 2026 | +2 days | F956USQS4EZJ1/F956UOYN4EZJ1/F956USQS4EZJ1 |
TMB | USA (T-Mobile) | Nov 9, 2026 | +14 days | F956USQS4EZJ1/F956UOYN4EZJ1/F956USQS4EZJ1 |
TMK | USA (MetroPCS) | Nov 9, 2026 | +14 days | F956USQS4EZJ1/F956UOYN4EZJ1/F956USQS4EZJ1 |
USC | USA (US Cellular) | Nov 9, 2026 | +14 days | F956USQS4EZJ1/F956UOYN4EZJ1/F956USQS4EZJ1 |
Download and release notes
samloader download -m SM-F956U -r XAA -v F956USQS4EZJ1/F956UOYN4EZJ1/F956USQS4EZJ1Samsung's release notes and security patch level for this update: SM-F956U / XAA on doc.samsungmobile.com. What each part of the build number means: decode F956USQS4EZJ1.