S948USQU4BZID – Galaxy S26 Ultra firmware
Build S948USQU4BZID is a feature update for the Galaxy S26 Ultra (SM-S948U)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Sep 22, 2026 (method) and has reached
9 regions so far. It keeps bootloader bit 4, so downgrading to the previous build S948USQS4AZHL is still possible. Samsung still serves this file.
- Model
- SM-S948U
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 4
- First released
- Sep 22, 2026
- Regions
- 9
Rollout timeline by region
The date each region code (CSC) first received S948USQU4BZID, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
TMB | USA (T-Mobile) | Sep 22, 2026 | day 0 | S948USQU4BZID/S948UOYN4BZID/S948USQU4BZID |
TMK | USA (MetroPCS) | Sep 22, 2026 | day 0 | S948USQU4BZID/S948UOYN4BZID/S948USQU4BZID |
USC | USA (US Cellular) | Sep 22, 2026 | day 0 | S948USQU4BZID/S948UOYN4BZID/S948USQU4BZID |
CCT | USA (Comcast) | Sep 27, 2026 | +5 days | S948USQU4BZID/S948UOYN4BZID/S948USQU4BZID |
AIO | USA (Cricket) | Sep 27, 2026 | +5 days | S948USQU4BZID/S948UOYN4BZID/S948USQU4BZID |
ATT | USA (AT&T) | Sep 27, 2026 | +5 days | S948USQU4BZID/S948UOYN4BZID/S948USQU4BZID |
DSH | USA | Sep 29, 2026 | +7 days | S948USQU4BZID/S948UOYN4BZID/S948USQU4BZID |
DSA | USA | Sep 29, 2026 | +7 days | S948USQU4BZID/S948UOYN4BZID/S948USQU4BZID |
VZW | USA (Verizon) | Sep 29, 2026 | +7 days | S948USQU4BZID/S948UOYN4BZID/S948USQU4BZID |
Download and release notes
samloader download -m SM-S948U -r TMB -v S948USQU4BZID/S948UOYN4BZID/S948USQU4BZIDSamsung's release notes and security patch level for this update: SM-S948U / TMB on doc.samsungmobile.com. What each part of the build number means: decode S948USQU4BZID.