A166EXXUAEZJ5 – Galaxy A16 5G firmware
Build A166EXXUAEZJ5 is a feature update for the Galaxy A16 5G (SM-A166E)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 26, 2026 (method) and has reached
4 regions so far. It keeps bootloader bit 10, so downgrading to the previous build A166EXXSADZH1 is still possible. Samsung still serves this file.
- Model
- SM-A166E
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 10
- First released
- Oct 26, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received A166EXXUAEZJ5, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KSA | Saudi Arabia | Oct 26, 2026 | day 0 | A166EXXUAEZJ5/A166EOJMAEZJ6/A166EXXUAEZJ5 |
MID | Middle East | Oct 26, 2026 | day 0 | A166EXXUAEZJ5/A166EOJMAEZJ6/A166EXXUAEZJ5 |
TUN | Tunisia | Oct 26, 2026 | day 0 | A166EXXUAEZJ5/A166EOJMAEZJ6/A166EXXUAEZJ5 |
XSG | United Arab Emirates | Oct 26, 2026 | day 0 | A166EXXUAEZJ5/A166EOJMAEZJ6/A166EXXUAEZJ5 |
Download and release notes
samloader download -m SM-A166E -r KSA -v A166EXXUAEZJ5/A166EOJMAEZJ6/A166EXXUAEZJ5Samsung's release notes and security patch level for this update: SM-A166E / KSA on doc.samsungmobile.com. What each part of the build number means: decode A166EXXUAEZJ5.