A166LKSS7CZG1 – Galaxy Buddy4 firmware
Build A166LKSS7CZG1 is a security update for the Galaxy Buddy4 (SM-A166L)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 23, 2026 (method) and has reached
1 region so far. It raises the bootloader bit from 6 to 7: once installed, the device no longer accepts firmware with bit 6 or lower, so a downgrade to A166LKSU6CZE9 is blocked. Samsung still serves this file.
- Model
- SM-A166L
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 7
- First released
- Jul 23, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received A166LKSS7CZG1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
LUC | South Korea (LG U+) | Jul 23, 2026 | day 0 | A166LKSS7CZG1/A166LLUC7CZG1/A166LKLS7CZG1 |
Download and release notes
samloader download -m SM-A166L -r LUC -v A166LKSS7CZG1/A166LLUC7CZG1/A166LKLS7CZG1Samsung's release notes and security patch level for this update: SM-A166L / LUC on doc.samsungmobile.com. What each part of the build number means: decode A166LKSS7CZG1.