F971U1UES3AZIL – Galaxy Z Fold8 firmware

Build F971U1UES3AZIL is a security update for the Galaxy Z Fold8 (SM-F971U1) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 5, 2026 (method) and has reached 13 regions so far. It keeps bootloader bit 3, so downgrading to the previous build F971U1UEU3AZI8 is still possible. Samsung still serves this file.

Model
SM-F971U1
Android
Android 17
Type
Security
Bootloader bit
3
First released
Oct 5, 2026
Regions
13

Rollout timeline by region

The date each region code (CSC) first received F971U1UES3AZIL, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
AIOUSA (Cricket)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
ATTUSA (AT&T)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
CCTUSA (Comcast)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
DSAUSAOct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
DSHUSAOct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
LRAUSA (Bluegrass)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
TFNUSA (TracFone)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
TMBUSA (T-Mobile)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
TMKUSA (MetroPCS)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
VZWUSA (Verizon)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
XAAUSA (unlocked)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL
XARUSA (Cellular South)Oct 5, 2026day 0F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL

Download and release notes

samloader download -m SM-F971U1 -r XAA -v F971U1UES3AZIL/F971U1OYM3AZIL/F971U1UES3AZIL

Samsung's release notes and security patch level for this update: SM-F971U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode F971U1UES3AZIL.