F971USQU3AZI5 – Galaxy Z Fold8 firmware
Build F971USQU3AZI5 is a feature update for the Galaxy Z Fold8 (SM-F971U)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Sep 13, 2026 (method) and has reached
7 regions so far. It raises the bootloader bit from 2 to 3: once installed, the device no longer accepts firmware with bit 2 or lower, so a downgrade to F971USQS2AZH8 is blocked. Samsung still serves this file.
- Model
- SM-F971U
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 3
- First released
- Sep 13, 2026
- Regions
- 7
Rollout timeline by region
The date each region code (CSC) first received F971USQU3AZI5, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
CCT | USA (Comcast) | Sep 13, 2026 | day 0 | F971USQU3AZI5/F971UOYN3AZI5/F971USQU3AZI5 |
TMK | USA (MetroPCS) | Sep 14, 2026 | +1 day | F971USQU3AZI5/F971UOYN3AZI5/F971USQU3AZI5 |
TMB | USA (T-Mobile) | Sep 14, 2026 | +1 day | F971USQU3AZI5/F971UOYN3AZI5/F971USQU3AZI5 |
AIO | USA (Cricket) | Sep 16, 2026 | +3 days | F971USQU3AZI5/F971UOYN3AZI5/F971USQU3AZI5 |
ATT | USA (AT&T) | Sep 16, 2026 | +3 days | F971USQU3AZI5/F971UOYN3AZI5/F971USQU3AZI5 |
XAA | USA (unlocked) | Sep 16, 2026 | +3 days | F971USQU3AZI5/F971UOYN3AZI5/F971USQU3AZI5 |
VZW | USA (Verizon) | Sep 22, 2026 | +9 days | F971USQU3AZI5/F971UOYN3AZI5/F971USQU3AZI5 |
Download and release notes
samloader download -m SM-F971U -r XAA -v F971USQU3AZI5/F971UOYN3AZI5/F971USQU3AZI5Samsung's release notes and security patch level for this update: SM-F971U / XAA on doc.samsungmobile.com. What each part of the build number means: decode F971USQU3AZI5.