S948CONU1AZCF – Galaxy S26 Ultra firmware
Build S948CONU1AZCF is a feature update for the Galaxy S26 Ultra (SM-S948C)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Mar 26, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 1, so downgrading to the previous build S948CONU1AZAI is still possible. Samsung still serves this file.
- Model
- SM-S948C
- Android
- Android 16
- Type
- Feature
- Bootloader bit
- 1
- First released
- Mar 26, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received S948CONU1AZCF, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
RKT | Japan (Rakuten) | Mar 26, 2026 | day 0 | S948CONU1AZCF/S948CQKT1AZCF/S948CONU1AZCF |
Download and release notes
samloader download -m SM-S948C -r RKT -v S948CONU1AZCF/S948CQKT1AZCF/S948CONU1AZCFSamsung's release notes and security patch level for this update: SM-S948C / RKT on doc.samsungmobile.com. What each part of the build number means: decode S948CONU1AZCF.