F971USQS3AZIL – Galaxy Z Fold8 firmware

Build F971USQS3AZIL is a security update for the Galaxy Z Fold8 (SM-F971U) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 5, 2026 (method) and has reached 7 regions so far. It keeps bootloader bit 3, so downgrading to the previous build F971USQU3AZI8 is still possible. Samsung still serves this file.

Model
SM-F971U
Android
Android 17
Type
Security
Bootloader bit
3
First released
Oct 5, 2026
Regions
7

Rollout timeline by region

The date each region code (CSC) first received F971USQS3AZIL, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ATTUSA (AT&T)Oct 5, 2026day 0F971USQS3AZIL/F971UOYN3AZIL/F971USQS3AZIL
AIOUSA (Cricket)Oct 5, 2026day 0F971USQS3AZIL/F971UOYN3AZIL/F971USQS3AZIL
CCTUSA (Comcast)Oct 5, 2026day 0F971USQS3AZIL/F971UOYN3AZIL/F971USQS3AZIL
VZWUSA (Verizon)Oct 5, 2026day 0F971USQS3AZIL/F971UOYN3AZIL/F971USQS3AZIL
XAAUSA (unlocked)Oct 5, 2026day 0F971USQS3AZIL/F971UOYN3AZIL/F971USQS3AZIL
TMBUSA (T-Mobile)Oct 6, 2026+1 dayF971USQS3AZIL/F971UOYN3AZIL/F971USQS3AZIL
TMKUSA (MetroPCS)Oct 6, 2026+1 dayF971USQS3AZIL/F971UOYN3AZIL/F971USQS3AZIL

Download and release notes

samloader download -m SM-F971U -r XAA -v F971USQS3AZIL/F971UOYN3AZIL/F971USQS3AZIL

Samsung'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 F971USQS3AZIL.