F956U1UES4EZJ1 – Galaxy Z Fold6 firmware

Build F956U1UES4EZJ1 is a security update for the Galaxy Z Fold6 (SM-F956U1) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 28, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 4, so downgrading to the previous build F956U1UEU4EZIH is still possible. Samsung still serves this file.

Model
SM-F956U1
Android
Android 17
Type
Security
Bootloader bit
4
First released
Oct 28, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received F956U1UES4EZJ1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Oct 28, 2026day 0F956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
AIOUSA (Cricket)Oct 28, 2026day 0F956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
ATTUSA (AT&T)Oct 28, 2026day 0F956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
CCTUSA (Comcast)Oct 28, 2026day 0F956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
LRAUSA (Bluegrass)Oct 28, 2026day 0F956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
TFNUSA (TracFone)Oct 28, 2026day 0F956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
VZWUSA (Verizon)Oct 28, 2026day 0F956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
XARUSA (Cellular South)Oct 28, 2026day 0F956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
DSAUSANov 12, 2026+15 daysF956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
DSHUSANov 12, 2026+15 daysF956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
TMBUSA (T-Mobile)Nov 12, 2026+15 daysF956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
TMKUSA (MetroPCS)Nov 12, 2026+15 daysF956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
USCUSA (US Cellular)Nov 12, 2026+15 daysF956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1
XAAUSA (unlocked)Nov 12, 2026+15 daysF956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1

Download and release notes

samloader download -m SM-F956U1 -r XAA -v F956U1UES4EZJ1/F956U1OYM4EZJ1/F956U1UES4EZJ1

Samsung's release notes and security patch level for this update: SM-F956U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode F956U1UES4EZJ1.