F731U1UES8GZI1 – Galaxy Z Flip5 firmware

Build F731U1UES8GZI1 is a security update for the Galaxy Z Flip5 (SM-F731U1) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 27, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 8, so downgrading to the previous build F731U1UES8GZH5 is still possible. Samsung still serves this file.

Model
SM-F731U1
Android
Android 16
Type
Security
Bootloader bit
8
First released
Sep 27, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received F731U1UES8GZI1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
AIOUSA (Cricket)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
ATTUSA (AT&T)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
CCTUSA (Comcast)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
DSAUSASep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
DSHUSASep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
LRAUSA (Bluegrass)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
TFNUSA (TracFone)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
TMBUSA (T-Mobile)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
TMKUSA (MetroPCS)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
USCUSA (US Cellular)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
VZWUSA (Verizon)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
XAAUSA (unlocked)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1
XARUSA (Cellular South)Sep 27, 2026day 0F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1

Download and release notes

samloader download -m SM-F731U1 -r XAA -v F731U1UES8GZI1/F731U1OYM8GZI1/F731U1UES8GZI1

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 F731U1UES8GZI1.