S928NKSS6EZJ1 – Galaxy S24 Ultra firmware
Build S928NKSS6EZJ1 is a security update for the Galaxy S24 Ultra (SM-S928N)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 21, 2026 (method) and has reached
4 regions so far. It keeps bootloader bit 6, so downgrading to the previous build S928NKSU6EZIF is still possible. Samsung still serves this file.
- Model
- SM-S928N
- Android
- Android 17
- Type
- Security
- Bootloader bit
- 6
- First released
- Oct 21, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received S928NKSS6EZJ1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Oct 21, 2026 | day 0 | S928NKSS6EZJ1/S928NOKR6EZJ1/S928NKSU6EZIA |
KTC | South Korea (KT) | Oct 21, 2026 | day 0 | S928NKSS6EZJ1/S928NOKR6EZJ1/S928NKSU6EZIA |
LUC | South Korea (LG U+) | Oct 21, 2026 | day 0 | S928NKSS6EZJ1/S928NOKR6EZJ1/S928NKSU6EZIA |
SKC | South Korea (SKT) | Oct 21, 2026 | day 0 | S928NKSS6EZJ1/S928NOKR6EZJ1/S928NKSU6EZIA |
Download and release notes
samloader download -m SM-S928N -r KOO -v S928NKSS6EZJ1/S928NOKR6EZJ1/S928NKSU6EZIASamsung's release notes and security patch level for this update: SM-S928N / KOO on doc.samsungmobile.com. What each part of the build number means: decode S928NKSS6EZJ1.