S948USQU5BZJA – Galaxy S26 Ultra firmware
Build S948USQU5BZJA 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 Oct 28, 2026 (method) and has reached
9 regions so far. It raises the bootloader bit from 4 to 5: once installed, the device no longer accepts firmware with bit 4 or lower, so a downgrade to S948USQS4BZIG is blocked. Samsung still serves this file.
- Model
- SM-S948U
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 5
- First released
- Oct 28, 2026
- Regions
- 9
Rollout timeline by region
The date each region code (CSC) first received S948USQU5BZJA, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
USC | USA (US Cellular) | Oct 28, 2026 | day 0 | S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJA |
CCT | USA (Comcast) | Oct 28, 2026 | day 0 | S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJA |
TMB | USA (T-Mobile) | Oct 28, 2026 | day 0 | S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJA |
TMK | USA (MetroPCS) | Oct 28, 2026 | day 0 | S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJA |
AIO | USA (Cricket) | Oct 28, 2026 | day 0 | S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJA |
ATT | USA (AT&T) | Oct 28, 2026 | day 0 | S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJA |
VZW | USA (Verizon) | Oct 30, 2026 | +2 days | S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJA |
DSA | USA | Oct 30, 2026 | +2 days | S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJA |
DSH | USA | Oct 30, 2026 | +2 days | S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJA |
Download and release notes
samloader download -m SM-S948U -r USC -v S948USQU5BZJA/S948UOYN5BZJA/S948USQU5BZJASamsung's release notes and security patch level for this update: SM-S948U / USC on doc.samsungmobile.com. What each part of the build number means: decode S948USQU5BZJA.