S938U1UEUDDZJB – Galaxy S25 Ultra firmware

Build S938U1UEUDDZJB is a feature update for the Galaxy S25 Ultra (SM-S938U1) on Android 17 (One UI 9). It first appeared on Samsung's servers on Nov 9, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 13, so downgrading to the previous build S938U1UESDDZJ1 is still possible. Samsung still serves this file.

Model
SM-S938U1
Android
Android 17
Type
Feature
Bootloader bit
13
First released
Nov 9, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received S938U1UEUDDZJB, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
AIOUSA (Cricket)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
ATTUSA (AT&T)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
CCTUSA (Comcast)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
DSAUSANov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
DSHUSANov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
LRAUSA (Bluegrass)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
TFNUSA (TracFone)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
TMBUSA (T-Mobile)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
TMKUSA (MetroPCS)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
USCUSA (US Cellular)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
VZWUSA (Verizon)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
XAAUSA (unlocked)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB
XARUSA (Cellular South)Nov 9, 2026day 0S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB

Download and release notes

samloader download -m SM-S938U1 -r XAA -v S938U1UEUDDZJB/S938U1OYMDDZJB/S938U1UEUDDZJB

Samsung's release notes and security patch level for this update: SM-S938U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode S938U1UEUDDZJB.