S921NKSUHEZIF – Galaxy S24 firmware
Build S921NKSUHEZIF is a feature update for the Galaxy S24 (SM-S921N)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 5, 2026 (method) and has reached
4 regions so far. It keeps bootloader bit 17, so downgrading to the previous build S921NKSSHDZH3 is still possible. Samsung still serves this file.
- Model
- SM-S921N
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 17
- First released
- Oct 5, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received S921NKSUHEZIF, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Oct 5, 2026 | day 0 | S921NKSUHEZIF/S921NOKRHEZIF/S921NKSUHEZIA |
KTC | South Korea (KT) | Oct 5, 2026 | day 0 | S921NKSUHEZIF/S921NOKRHEZIF/S921NKSUHEZIA |
LUC | South Korea (LG U+) | Oct 5, 2026 | day 0 | S921NKSUHEZIF/S921NOKRHEZIF/S921NKSUHEZIA |
SKC | South Korea (SKT) | Oct 5, 2026 | day 0 | S921NKSUHEZIF/S921NOKRHEZIF/S921NKSUHEZIA |
Download and release notes
samloader download -m SM-S921N -r KOO -v S921NKSUHEZIF/S921NOKRHEZIF/S921NKSUHEZIASamsung's release notes and security patch level for this update: SM-S921N / KOO on doc.samsungmobile.com. What each part of the build number means: decode S921NKSUHEZIF.