F956U1UEU4EZIH – Galaxy Z Fold6 firmware

Build F956U1UEU4EZIH is a feature update for the Galaxy Z Fold6 (SM-F956U1) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 11, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 4, so downgrading to the previous build F956U1UES4DZH5 is still possible. Samsung still serves this file.

Model
SM-F956U1
Android
Android 17
Type
Feature
Bootloader bit
4
First released
Oct 11, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received F956U1UEU4EZIH, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
TMBUSA (T-Mobile)Oct 11, 2026day 0F956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
TMKUSA (MetroPCS)Oct 11, 2026day 0F956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
USCUSA (US Cellular)Oct 11, 2026day 0F956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
ACGUSA (C Spire)Oct 11, 2026day 0F956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
AIOUSA (Cricket)Oct 11, 2026day 0F956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
ATTUSA (AT&T)Oct 11, 2026day 0F956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
LRAUSA (Bluegrass)Oct 11, 2026day 0F956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
XARUSA (Cellular South)Oct 11, 2026day 0F956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
CCTUSA (Comcast)Oct 13, 2026+2 daysF956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
TFNUSA (TracFone)Oct 13, 2026+2 daysF956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
VZWUSA (Verizon)Oct 13, 2026+2 daysF956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
XAAUSA (unlocked)Oct 13, 2026+2 daysF956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
DSAUSAOct 14, 2026+3 daysF956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH
DSHUSAOct 14, 2026+3 daysF956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH

Download and release notes

samloader download -m SM-F956U1 -r XAA -v F956U1UEU4EZIH/F956U1OYM4EZIH/F956U1UEU4EZIH

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 F956U1UEU4EZIH.