S938USQUDDZJB – Galaxy S25 Ultra firmware

Build S938USQUDDZJB is a feature update for the Galaxy S25 Ultra (SM-S938U) on Android 17 (One UI 9). It first appeared on Samsung's servers on Nov 9, 2026 (method) and has reached 9 regions so far. It keeps bootloader bit 13, so downgrading to the previous build S938USQSDDZJ1 is still possible. Samsung still serves this file.

Model
SM-S938U
Android
Android 17
Type
Feature
Bootloader bit
13
First released
Nov 9, 2026
Regions
9

Rollout timeline by region

The date each region code (CSC) first received S938USQUDDZJB, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ATTUSA (AT&T)Nov 9, 2026day 0S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB
CCTUSA (Comcast)Nov 9, 2026day 0S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB
DSAUSANov 9, 2026day 0S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB
DSHUSANov 9, 2026day 0S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB
TMBUSA (T-Mobile)Nov 9, 2026day 0S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB
TMKUSA (MetroPCS)Nov 9, 2026day 0S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB
USCUSA (US Cellular)Nov 9, 2026day 0S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB
XAAUSA (unlocked)Nov 9, 2026day 0S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB
VZWUSA (Verizon)Nov 9, 2026day 0S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB

Download and release notes

samloader download -m SM-S938U -r XAA -v S938USQUDDZJB/S938UOYNDDZJB/S938USQUDDZJB

Samsung's release notes and security patch level for this update: SM-S938U / XAA on doc.samsungmobile.com. What each part of the build number means: decode S938USQUDDZJB.