S911USQU8GZIF – Galaxy S23 firmware

Build S911USQU8GZIF is a feature update for the Galaxy S23 (SM-S911U) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 18, 2026 (method) and has reached 9 regions so far. It keeps bootloader bit 8, so downgrading to the previous build S911USQS8FZI1 is still possible. Samsung still serves this file.

Model
SM-S911U
Android
Android 17
Type
Feature
Bootloader bit
8
First released
Oct 18, 2026
Regions
9

Rollout timeline by region

The date each region code (CSC) first received S911USQU8GZIF, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ATTUSA (AT&T)Oct 18, 2026day 0S911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF
TMBUSA (T-Mobile)Oct 18, 2026day 0S911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF
TMKUSA (MetroPCS)Oct 18, 2026day 0S911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF
USCUSA (US Cellular)Oct 18, 2026day 0S911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF
DSAUSAOct 22, 2026+4 daysS911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF
DSHUSAOct 22, 2026+4 daysS911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF
CCTUSA (Comcast)Oct 25, 2026+7 daysS911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF
VZWUSA (Verizon)Oct 26, 2026+8 daysS911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF
XAAUSA (unlocked)Oct 26, 2026+8 daysS911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF

Download and release notes

samloader download -m SM-S911U -r XAA -v S911USQU8GZIF/S911UOYN8GZIF/S911USQU8GZIF

Samsung's release notes and security patch level for this update: SM-S911U / XAA on doc.samsungmobile.com. What each part of the build number means: decode S911USQU8GZIF.