S948ZSCU1AZDE – Galaxy S26 Ultra firmware
Build S948ZSCU1AZDE is a feature update for the Galaxy S26 Ultra (SM-S948Z)
on Android 16 (One UI 8). It first appeared on Samsung's servers on May 21, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 1, so downgrading to the previous build S948ZSCS1AZCL is still possible. Samsung still serves this file.
- Model
- SM-S948Z
- Android
- Android 16
- Type
- Feature
- Bootloader bit
- 1
- First released
- May 21, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received S948ZSCU1AZDE, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
SBM | Japan (SoftBank) | May 21, 2026 | day 0 | S948ZSCU1AZDE/S948ZQBM1AZDE/S948ZSCU1AZDE |
Download and release notes
samloader download -m SM-S948Z -r SBM -v S948ZSCU1AZDE/S948ZQBM1AZDE/S948ZSCU1AZDESamsung's release notes and security patch level for this update: SM-S948Z / SBM on doc.samsungmobile.com. What each part of the build number means: decode S948ZSCU1AZDE.