A166MUBSADZJA – Galaxy A16 5G firmware
Build A166MUBSADZJA is a security update for the Galaxy A16 5G (SM-A166M)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Oct 14, 2026 (method) and has reached
15 regions so far. It keeps bootloader bit 10, so downgrading to the previous build A166MUBSADZH1 is still possible. Samsung still serves this file.
- Model
- SM-A166M
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 10
- First released
- Oct 14, 2026
- Regions
- 15
Rollout timeline by region
The date each region code (CSC) first received A166MUBSADZJA, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
CDR | Dominican Republic | Oct 14, 2026 | day 0 | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
IUS | Mexico (AT&T) | Oct 14, 2026 | day 0 | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
MXO | Mexico | Oct 14, 2026 | day 0 | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
TCE | Mexico (Telcel) | Oct 14, 2026 | day 0 | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
TMM | Myanmar | Oct 14, 2026 | day 0 | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
ZTA | Brazil (Claro) | Oct 14, 2026 | day 0 | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
ZTM | Brazil (TIM) | Oct 14, 2026 | day 0 | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
ZTO | Brazil | Oct 14, 2026 | day 0 | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
ZVV | Brazil (Vivo) | Oct 14, 2026 | day 0 | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
COM | Colombia (Claro) | Oct 19, 2026 | +5 days | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
CHE | Chile (Entel) | Oct 27, 2026 | +13 days | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
CHL | Chile (Claro) | Oct 27, 2026 | +13 days | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
CHO | Chile | Oct 27, 2026 | +13 days | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
CHT | Chile (Movistar) | Oct 27, 2026 | +13 days | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
CHX | Chile | Oct 27, 2026 | +13 days | A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJA |
Download and release notes
samloader download -m SM-A166M -r CDR -v A166MUBSADZJA/A166MOWOADZJA/A166MUBSADZJASamsung's release notes and security patch level for this update: SM-A166M / CDR on doc.samsungmobile.com. What each part of the build number means: decode A166MUBSADZJA.