A166PXXS7CZD2 – Galaxy A16 5G firmware
Build A166PXXS7CZD2 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 Apr 19, 2026 (method) and has reached
26 regions so far. It keeps bootloader bit 7, so downgrading to the previous build A166PXXS7CZB2 is still possible. Samsung still serves this file.
- Model
- SM-A166P
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 7
- First released
- Apr 19, 2026
- Regions
- 26
Rollout timeline by region
The date each region code (CSC) first received A166PXXS7CZD2, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
GLB | Philippines (Globe) | Apr 19, 2026 | day 0 | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
THL | Thailand | Apr 19, 2026 | day 0 | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
XID | Indonesia | Apr 19, 2026 | day 0 | A166PXXS7CZD2/A166POLE7CZD2/A166PXXS7CZD2 |
XME | Malaysia | Apr 19, 2026 | day 0 | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
XTC | Philippines | Apr 19, 2026 | day 0 | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
XXV | Vietnam | Apr 19, 2026 | day 0 | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
OPS | Australia (Optus) | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
TEL | Australia (Telstra) | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
VAU | Australia (Vodafone) | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
XSA | Australia | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
ACR | Ghana | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POJM7CZD2/A166PXXS7CZD2 |
AFR | Africa | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POJM7CZD2/A166PXXS7CZD2 |
DKR | Senegal | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POJM7CZD2/A166PXXS7CZD2 |
ECT | Nigeria | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POJM7CZD2/A166PXXS7CZD2 |
XFA | South Africa | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POJM7CZD2/A166PXXS7CZD2 |
XFV | South Africa (Vodacom) | Apr 22, 2026 | +3 days | A166PXXS7CZD2/A166POJM7CZD2/A166PXXS7CZD2 |
XNZ | New Zealand | Apr 23, 2026 | +4 days | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
MM1 | Singapore (M1) | Apr 27, 2026 | +8 days | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
SIN | Singapore (Singtel) | Apr 27, 2026 | +8 days | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
STH | Singapore (StarHub) | Apr 27, 2026 | +8 days | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
XSP | Singapore | Apr 27, 2026 | +8 days | A166PXXS7CZD2/A166POLM7CZD2/A166PXXS7CZD2 |
BKD | Bangladesh | Apr 29, 2026 | +10 days | A166PXXS7CZD2/A166PODM7CZD2/A166PXXS7CZD2 |
BNG | Belgium | Apr 29, 2026 | +10 days | A166PXXS7CZD2/A166PODM7CZD2/A166PXXS7CZD2 |
INS | India | Apr 29, 2026 | +10 days | A166PXXS7CZD2/A166PODM7CZD2/A166PXXS7CZD2 |
NPB | Nepal | Apr 29, 2026 | +10 days | A166PXXS7CZD2/A166PODM7CZD2/A166PXXS7CZD2 |
SLK | Sri Lanka | Apr 29, 2026 | +10 days | A166PXXS7CZD2/A166PODM7CZD2/A166PXXS7CZD2 |
Download and release notes
samloader download -m SM-A166P -r INS -v A166PXXS7CZD2/A166PODM7CZD2/A166PXXS7CZD2Samsung'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 A166PXXS7CZD2.