A166USQU7DZEA – Galaxy A16 5G firmware
Build A166USQU7DZEA is a feature update for the Galaxy A16 5G (SM-A166U)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 3, 2026 (method) and has reached
9 regions so far. It keeps bootloader bit 7, so downgrading to the previous build A166USQS7CZDG is still possible. Samsung still serves this file.
- Model
- SM-A166U
- Android
- Android 16
- Type
- Feature
- Bootloader bit
- 7
- First released
- Jun 3, 2026
- Regions
- 9
Rollout timeline by region
The date each region code (CSC) first received A166USQU7DZEA, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
AIO | USA (Cricket) | Jun 3, 2026 | day 0 | A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEA |
ATT | USA (AT&T) | Jun 3, 2026 | day 0 | A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEA |
CCT | USA (Comcast) | Jun 4, 2026 | +1 day | A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEA |
TMB | USA (T-Mobile) | Jun 4, 2026 | +1 day | A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEA |
TMK | USA (MetroPCS) | Jun 4, 2026 | +1 day | A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEA |
DSA | USA | Jun 4, 2026 | +1 day | A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEA |
DSH | USA | Jun 4, 2026 | +1 day | A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEA |
VZW | USA (Verizon) | Jun 8, 2026 | +5 days | A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEA |
USC | USA (US Cellular) | Jun 11, 2026 | +8 days | A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEA |
Download and release notes
samloader download -m SM-A166U -r AIO -v A166USQU7DZEA/A166UOYN7DZEA/A166USQU7DZEASamsung's release notes and security patch level for this update: SM-A166U / AIO on doc.samsungmobile.com. What each part of the build number means: decode A166USQU7DZEA.