M166PXXS6DZF2 – Galaxy M16 5G firmware
Build M166PXXS6DZF2 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 Jun 30, 2026 (method) and has reached
2 regions so far. It raises the bootloader bit from 5 to 6: once installed, the device no longer accepts firmware with bit 5 or lower, so a downgrade to M166PXXU5DZE2 is blocked. Samsung still serves this file.
- Model
- SM-M166P
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 6
- First released
- Jun 30, 2026
- Regions
- 2
Rollout timeline by region
The date each region code (CSC) first received M166PXXS6DZF2, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | Jun 30, 2026 | day 0 | M166PXXS6DZF2/M166PODM6DZF2/M166PXXS6DZF2 |
NPB | Nepal | Jun 30, 2026 | day 0 | M166PXXS6DZF2/M166PODM6DZF2/M166PXXS6DZF2 |
Download and release notes
samloader download -m SM-M166P -r INS -v M166PXXS6DZF2/M166PODM6DZF2/M166PXXS6DZF2Samsung'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 M166PXXS6DZF2.