S731U1UEU9CZIF – Galaxy S25 FE firmware

Build S731U1UEU9CZIF is a feature update for the Galaxy S25 FE (SM-S731U1) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 5, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 9, so downgrading to the previous build S731U1UES9BZF9 is still possible. Samsung still serves this file.

Model
SM-S731U1
Android
Android 17
Type
Feature
Bootloader bit
9
First released
Oct 5, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received S731U1UEU9CZIF, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
AIOUSA (Cricket)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
ATTUSA (AT&T)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
CCTUSA (Comcast)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
DSAUSAOct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
DSHUSAOct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
LRAUSA (Bluegrass)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
TFNUSA (TracFone)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
TMBUSA (T-Mobile)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
TMKUSA (MetroPCS)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
USCUSA (US Cellular)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
VZWUSA (Verizon)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
XAAUSA (unlocked)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF
XARUSA (Cellular South)Oct 5, 2026day 0S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF

Download and release notes

samloader download -m SM-S731U1 -r XAA -v S731U1UEU9CZIF/S731U1OYM9CZIF/S731U1UEU9CZIF

Samsung's release notes and security patch level for this update: SM-S731U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode S731U1UEU9CZIF.