A175NKSS5CZF1 – Galaxy A17 firmware
Build A175NKSS5CZF1 is a security update for the Galaxy A17 (SM-A175N)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 17, 2026 (method) and has reached
4 regions so far. It raises the bootloader bit from 3 to 5: once installed, the device no longer accepts firmware with bit 3 or lower, so a downgrade to A175NKSU3BZAB is blocked. Samsung still serves this file.
- Model
- SM-A175N
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 5
- First released
- Jun 17, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received A175NKSS5CZF1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Jun 17, 2026 | day 0 | A175NKSS5CZF1/A175NOKR5CZF1/A175NKOU5CZE9 |
KTC | South Korea (KT) | Jun 17, 2026 | day 0 | A175NKSS5CZF1/A175NOKR5CZF1/A175NKOU5CZE9 |
LUC | South Korea (LG U+) | Jun 17, 2026 | day 0 | A175NKSS5CZF1/A175NOKR5CZF1/A175NKOU5CZE9 |
SKC | South Korea (SKT) | Jun 17, 2026 | day 0 | A175NKSS5CZF1/A175NOKR5CZF1/A175NKOU5CZE9 |
Download and release notes
samloader download -m SM-A175N -r KOO -v A175NKSS5CZF1/A175NOKR5CZF1/A175NKOU5CZE9Samsung's release notes and security patch level for this update: SM-A175N / KOO on doc.samsungmobile.com. What each part of the build number means: decode A175NKSS5CZF1.