S948U1UES4AZHL – Galaxy S26 Ultra firmware

Build S948U1UES4AZHL is a security update for the Galaxy S26 Ultra (SM-S948U1) on Android 16 (One UI 8). It first appeared on Samsung's servers on Aug 31, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 4, so downgrading to the previous build S948U1UES4AZG3 is still possible. Samsung still serves this file.

Model
SM-S948U1
Android
Android 16
Type
Security
Bootloader bit
4
First released
Aug 31, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received S948U1UES4AZHL, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
XARUSA (Cellular South)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
ACGUSA (C Spire)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
AIOUSA (Cricket)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
ATTUSA (AT&T)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
CCTUSA (Comcast)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
DSAUSAAug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
DSHUSAAug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
LRAUSA (Bluegrass)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
TFNUSA (TracFone)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
TMBUSA (T-Mobile)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
TMKUSA (MetroPCS)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
USCUSA (US Cellular)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
VZWUSA (Verizon)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL
XAAUSA (unlocked)Aug 31, 2026day 0S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL

Download and release notes

samloader download -m SM-S948U1 -r XAA -v S948U1UES4AZHL/S948U1OYM4AZHL/S948U1UES4AZHL

Samsung's release notes and security patch level for this update: SM-S948U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode S948U1UES4AZHL.