S948U1UES4BZIG – Galaxy S26 Ultra firmware

Build S948U1UES4BZIG is a security update for the Galaxy S26 Ultra (SM-S948U1) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 7, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 4, so downgrading to the previous build S948U1UEU4BZID is still possible. Samsung still serves this file.

Model
SM-S948U1
Android
Android 17
Type
Security
Bootloader bit
4
First released
Oct 7, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received S948U1UES4BZIG, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
AIOUSA (Cricket)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
ATTUSA (AT&T)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
CCTUSA (Comcast)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
DSAUSAOct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
DSHUSAOct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
LRAUSA (Bluegrass)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
TFNUSA (TracFone)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
TMBUSA (T-Mobile)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
TMKUSA (MetroPCS)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
USCUSA (US Cellular)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
VZWUSA (Verizon)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
XAAUSA (unlocked)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG
XARUSA (Cellular South)Oct 7, 2026day 0S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG

Download and release notes

samloader download -m SM-S948U1 -r XAA -v S948U1UES4BZIG/S948U1OYM4BZIG/S948U1UES4BZIG

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 S948U1UES4BZIG.