S711NKSSIEZI2 – Galaxy S23 FE firmware
Build S711NKSSIEZI2 is a security update for the Galaxy S23 FE (SM-S711N)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 20, 2026 (method) and has reached
4 regions so far. It raises the bootloader bit from 17 to 18: once installed, the device no longer accepts firmware with bit 17 or lower, so a downgrade to S711NKSSHEZH2 is blocked. Samsung still serves this file.
- Model
- SM-S711N
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 18
- First released
- Sep 20, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received S711NKSSIEZI2, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KTC | South Korea (KT) | Sep 20, 2026 | day 0 | S711NKSSIEZI2/S711NOKRIEZI2/S711NKOSIEZI2 |
LUC | South Korea (LG U+) | Sep 20, 2026 | day 0 | S711NKSSIEZI2/S711NOKRIEZI2/S711NKOSIEZI2 |
SKC | South Korea (SKT) | Sep 20, 2026 | day 0 | S711NKSSIEZI2/S711NOKRIEZI2/S711NKOSIEZI2 |
KOO | South Korea | Sep 20, 2026 | day 0 | S711NKSSIEZI2/S711NOKRIEZI2/S711NKOSIEZI2 |
Download and release notes
samloader download -m SM-S711N -r KOO -v S711NKSSIEZI2/S711NOKRIEZI2/S711NKOSIEZI2Samsung's release notes and security patch level for this update: SM-S711N / KOO on doc.samsungmobile.com. What each part of the build number means: decode S711NKSSIEZI2.