M166PXXS5CZD2 – Galaxy M16 5G firmware
Build M166PXXS5CZD2 is a security update for the Galaxy M16 5G (SM-M166P)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Apr 29, 2026 (method) and has reached
2 regions so far. It keeps bootloader bit 5, so downgrading to the previous build M166PXXS5CZB4 is still possible. Samsung still serves this file.
- Model
- SM-M166P
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 5
- First released
- Apr 29, 2026
- Regions
- 2
Rollout timeline by region
The date each region code (CSC) first received M166PXXS5CZD2, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | Apr 29, 2026 | day 0 | M166PXXS5CZD2/M166PODM5CZD2/M166PXXS5CZD2 |
NPB | Nepal | Apr 29, 2026 | day 0 | M166PXXS5CZD2/M166PODM5CZD2/M166PXXS5CZD2 |
Download and release notes
samloader download -m SM-M166P -r INS -v M166PXXS5CZD2/M166PODM5CZD2/M166PXXS5CZD2Samsung's release notes and security patch level for this update: SM-M166P / INS on doc.samsungmobile.com. What each part of the build number means: decode M166PXXS5CZD2.