Galaxy M56 5G SM-M566B updates & firmware
This page tracks every software update Samsung's update servers list for the Samsung Galaxy M56 5G (SM-M566B). The latest stable build is M566BXXU7DZJ1 (Android 17, feature update), first released on Oct 26, 2026. Samsung has published 10 stable builds for this model since May 7, 2025: 4 security and 6 feature updates, from Android 15 to Android 17. The current bootloader (binary) version is 7. A device on bit 7 only accepts firmware with bit 7 or higher – see downgrading and the bootloader bit.
Rollout: build M566BXXU7DZJ1 (Android 17 (One UI 9)) is live in all 1 regions, first released on Oct 26, 2026 in INS (India). In India (INS) the latest official firmware (flash file) is M566BXXU7DZJ1 from Oct 26, 2026.
- Latest build
M566BXXU7DZJ1- Released
- Oct 26, 2026
- Android
- Android 17
- Bootloader bit
- 7
- Regions
- 1
- Stable builds
- 10
Update policy
Samsung promised 6 major Android upgrades and 6 years of security updates for the Galaxy M56 5G, counted from its launch in May 2025 with Android 15. That makes Android 21 the last major version and security updates continue until about May 2031. It is currently on Android 17 (One UI 9), so 4 major upgrades are still to come.
- OS upgrades promised
- 6
- Security updates
- 6 years
- Last major version
- Android 21
- Security support until
- May 2031
- Current version
- Android 17 (One UI 9)
- Status
- Supported
Source: Samsung. Samsung counts from the global launch and does not publish exact end dates; the dates above are launch month plus the promised years.
Compare all models: Samsung update policy by model.
Latest firmware by region (CSC)
Samsung builds firmware per region code (CSC). Pick the code that matches your device – it is shown under Settings › About phone › Software information › Service provider software version. Follow a code for its complete history.
| CSC | Region | Latest build | Android | Released | Builds |
|---|---|---|---|---|---|
INS | India | M566BXXU7DZJ1 | Android 17 | Oct 26, 2026 | 10 |
Firmware history (10 builds)
Every stable build (PDA version) Samsung has published for the SM-M566B, newest first. “Released” is the earliest date the build appeared on Samsung's servers in any region (how dates work). “pulled” means Samsung no longer serves the file for that build, usually because newer builds replaced it (details).
| Build (PDA) | Released | Android | Type | Bit | Regions | File |
|---|---|---|---|---|---|---|
M566BXXU7DZJ1 | Oct 26, 2026 | Android 17 | Feature | 7 | 1 | on server |
M566BXXS7CZI1 | Sep 17, 2026 | Android 16 | Security | 7 | 1 | on server |
M566BXXS6CZH4 | Aug 30, 2026 | Android 16 | Security | 6 | 1 | on server |
M566BXXU5CZE2 | May 25, 2026 | Android 16 | Feature | 5 | 1 | on server |
M566BXXU5BZB4 | Mar 2, 2026 | Android 16 | Feature | 5 | 1 | on server |
M566BXXS4BYK2 | Nov 17, 2025 | Android 16 | Security | 4 | 1 | on server |
M566BXXU3BYI6 | Oct 13, 2025 | Android 16 | Feature | 3 | 1 | on server |
M566BXXS3AYH1 | Aug 10, 2025 | Android 15 | Security | 3 | 1 | on server |
M566BXXU2AYE4 | May 18, 2025 | Android 15 | Feature | 2 | 1 | on server |
M566BXXU1AYCA | May 7, 2025 | Android 15 | Feature | 1 | 1 | on server |
How to download SM-M566B firmware
We do not host firmware. Download it directly from Samsung's servers with a free open-source tool, for example samloader:
samloader download -m SM-M566B -r INSReplace INS with your region code. Step-by-step instructions, including a graphical alternative:
How to download Samsung firmware.
Changelog and security patch level
Samsung publishes the release notes for each update, including the security patch level, on its own site. They are listed per region – for example SM-M566B / INS release notes on doc.samsungmobile.com. Each region page here links to the notes for that code. We don't show the patch level ourselves because Samsung's update servers don't report it (why).