M566BXXU7DZJ1 – Galaxy M56 5G firmware
Build M566BXXU7DZJ1 is a feature update for the Galaxy M56 5G (SM-M566B)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 26, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 7, so downgrading to the previous build M566BXXS7CZI1 is still possible. Samsung still serves this file.
- Model
- SM-M566B
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 7
- First released
- Oct 26, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received M566BXXU7DZJ1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | Oct 26, 2026 | day 0 | M566BXXU7DZJ1/M566BODM7DZJ1/M566BXXU7DZJ1 |
Download and release notes
samloader download -m SM-M566B -r INS -v M566BXXU7DZJ1/M566BODM7DZJ1/M566BXXU7DZJ1Samsung's release notes and security patch level for this update: SM-M566B / INS on doc.samsungmobile.com. What each part of the build number means: decode M566BXXU7DZJ1.