S741NKSS2AZI3 – Galaxy S26 FE firmware
Build S741NKSS2AZI3 is a security update for the Galaxy S26 FE (SM-S741N)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Sep 14, 2026 (method) and has reached
4 regions so far. It raises the bootloader bit from 1 to 2: once installed, the device no longer accepts firmware with bit 1 or lower, so a downgrade to S741NKSU1AZHD is blocked. Samsung still serves this file.
- Model
- SM-S741N
- Android
- Android 17
- Type
- Security
- Bootloader bit
- 2
- First released
- Sep 14, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received S741NKSS2AZI3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Sep 14, 2026 | day 0 | S741NKSS2AZI3/S741NOKR2AZI3/S741NKSS2AZI1 |
KTC | South Korea (KT) | Sep 14, 2026 | day 0 | S741NKSS2AZI3/S741NOKR2AZI3/S741NKSS2AZI1 |
LUC | South Korea (LG U+) | Sep 14, 2026 | day 0 | S741NKSS2AZI3/S741NOKR2AZI3/S741NKSS2AZI1 |
SKC | South Korea (SKT) | Sep 14, 2026 | day 0 | S741NKSS2AZI3/S741NOKR2AZI3/S741NKSS2AZI1 |
Download and release notes
samloader download -m SM-S741N -r KOO -v S741NKSS2AZI3/S741NOKR2AZI3/S741NKSS2AZI1Samsung's release notes and security patch level for this update: SM-S741N / KOO on doc.samsungmobile.com. What each part of the build number means: decode S741NKSS2AZI3.