F731U1UEU8HZIJ – Galaxy Z Flip5 firmware

Build F731U1UEU8HZIJ is a feature update for the Galaxy Z Flip5 (SM-F731U1) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 25, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 8, so downgrading to the previous build F731U1UES8GZI1 is still possible. Samsung still serves this file.

Model
SM-F731U1
Android
Android 17
Type
Feature
Bootloader bit
8
First released
Oct 25, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received F731U1UEU8HZIJ, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
AIOUSA (Cricket)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
ATTUSA (AT&T)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
CCTUSA (Comcast)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
DSAUSAOct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
DSHUSAOct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
LRAUSA (Bluegrass)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
TFNUSA (TracFone)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
TMBUSA (T-Mobile)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
TMKUSA (MetroPCS)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
USCUSA (US Cellular)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
VZWUSA (Verizon)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
XAAUSA (unlocked)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ
XARUSA (Cellular South)Oct 25, 2026day 0F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ

Download and release notes

samloader download -m SM-F731U1 -r XAA -v F731U1UEU8HZIJ/F731U1OYM8HZIJ/F731U1UEU8HZIJ

Samsung's release notes and security patch level for this update: SM-F731U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode F731U1UEU8HZIJ.