A166LKSU6CZE9 – Galaxy Buddy4 firmware
Build A166LKSU6CZE9 is a feature update for the Galaxy Buddy4 (SM-A166L)
on Android 16 (One UI 8). It first appeared on Samsung's servers on May 31, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 6, so downgrading to the previous build A166LKSS6BZB7 is still possible. Samsung still serves this file.
- Model
- SM-A166L
- Android
- Android 16
- Type
- Feature
- Bootloader bit
- 6
- First released
- May 31, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received A166LKSU6CZE9, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
LUC | South Korea (LG U+) | May 31, 2026 | day 0 | A166LKSU6CZE9/A166LLUC6CZE9/A166LKLU6CZE9 |
Download and release notes
samloader download -m SM-A166L -r LUC -v A166LKSU6CZE9/A166LLUC6CZE9/A166LKLU6CZE9Samsung'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 A166LKSU6CZE9.