A166PXXS9DZG1 – Galaxy A16 5G firmware
Build A166PXXS9DZG1 is a security update for the Galaxy A16 5G (SM-A166P)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 15, 2026 (method) and has reached
26 regions so far. It raises the bootloader bit from 8 to 9: once installed, the device no longer accepts firmware with bit 8 or lower, so a downgrade to A166PXXS8DZF2 is blocked. Samsung still serves this file.
- Model
- SM-A166P
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 9
- First released
- Jul 15, 2026
- Regions
- 26
Rollout timeline by region
The date each region code (CSC) first received A166PXXS9DZG1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
XID | Indonesia | Jul 15, 2026 | day 0 | A166PXXS9DZG1/A166POLE9DZG1/A166PXXS9DZG1 |
GLB | Philippines (Globe) | Jul 15, 2026 | day 0 | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
THL | Thailand | Jul 15, 2026 | day 0 | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
XME | Malaysia | Jul 15, 2026 | day 0 | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
XTC | Philippines | Jul 15, 2026 | day 0 | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
XXV | Vietnam | Jul 15, 2026 | day 0 | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
ACR | Ghana | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POJM9DZG1/A166PXXS9DZG1 |
AFR | Africa | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POJM9DZG1/A166PXXS9DZG1 |
DKR | Senegal | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POJM9DZG1/A166PXXS9DZG1 |
ECT | Nigeria | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POJM9DZG1/A166PXXS9DZG1 |
MM1 | Singapore (M1) | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
SIN | Singapore (Singtel) | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
STH | Singapore (StarHub) | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
XFA | South Africa | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POJM9DZG1/A166PXXS9DZG1 |
XFV | South Africa (Vodacom) | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POJM9DZG1/A166PXXS9DZG1 |
XNZ | New Zealand | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
XSP | Singapore | Jul 19, 2026 | +4 days | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
BKD | Bangladesh | Jul 20, 2026 | +5 days | A166PXXS9DZG1/A166PODM9DZG1/A166PXXS9DZG1 |
BNG | Belgium | Jul 20, 2026 | +5 days | A166PXXS9DZG1/A166PODM9DZG1/A166PXXS9DZG1 |
INS | India | Jul 20, 2026 | +5 days | A166PXXS9DZG1/A166PODM9DZG1/A166PXXS9DZG1 |
NPB | Nepal | Jul 20, 2026 | +5 days | A166PXXS9DZG1/A166PODM9DZG1/A166PXXS9DZG1 |
SLK | Sri Lanka | Jul 20, 2026 | +5 days | A166PXXS9DZG1/A166PODM9DZG1/A166PXXS9DZG1 |
OPS | Australia (Optus) | Jul 20, 2026 | +5 days | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
TEL | Australia (Telstra) | Jul 20, 2026 | +5 days | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
VAU | Australia (Vodafone) | Jul 20, 2026 | +5 days | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
XSA | Australia | Jul 20, 2026 | +5 days | A166PXXS9DZG1/A166POLM9DZG1/A166PXXS9DZG1 |
Download and release notes
samloader download -m SM-A166P -r INS -v A166PXXS9DZG1/A166PODM9DZG1/A166PXXS9DZG1Samsung's release notes and security patch level for this update: SM-A166P / INS on doc.samsungmobile.com. What each part of the build number means: decode A166PXXS9DZG1.