GALAXY S DUOS GT-S7566 updates & firmware
This page tracks every software update Samsung's update servers list for the Samsung GALAXY S DUOS (GT-S7566). The latest stable build is S7566ZCAMH1 (Android 4, – update), first released on Sep 30, 2013. Samsung has published 8 stable builds for this model since Jan 16, 2013: 0 security and 0 feature updates, from Android 4 to Android 4. The current bootloader (binary) version is 12. A device on bit 12 only accepts firmware with bit 12 or higher – see downgrading and the bootloader bit.
Rollout: build S7566ZCAMH1 (Android 4) is live in all 1 regions, first released on Sep 30, 2013 in CHN (China).
- Latest build
S7566ZCAMH1- Released
- Sep 30, 2013
- Android
- Android 4
- Bootloader bit
- 12
- Regions
- 1
- Stable builds
- 8
Update policy
The GALAXY S DUOS no longer receives updates: the last firmware appeared on Sep 30, 2013, on Android 4.
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 |
|---|---|---|---|---|---|
CHN | China | S7566ZCAMH1 | Android 4 | Sep 30, 2013 | 8 |
Firmware history (8 builds)
Every stable build (PDA version) Samsung has published for the GT-S7566, 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 |
|---|---|---|---|---|---|---|
S7566ZCAMH1 | Sep 30, 2013 | Android 4 | – | 12 | 1 | on server |
S7566ZCAME2 | Jul 31, 2013 | Android 4 | – | 12 | 1 | pulled |
S7566ZCAMD1 | May 8, 2013 | Android 4 | – | 12 | 1 | pulled |
S7566ZCAMC1 | Apr 17, 2013 | Android 4 | – | 12 | 1 | pulled |
S7566ZCAMB2 | Mar 7, 2013 | Android 4 | – | 12 | 1 | pulled |
S7566ZCAMA4 | Feb 13, 2013 | Android 4 | – | 12 | 1 | pulled |
S7566ZCAMB1 | Feb 13, 2013 | Android 4 | – | 12 | 1 | pulled |
S7566ZCAMA3 | Jan 16, 2013 | Android 4 | – | 12 | 1 | pulled |
How to download GT-S7566 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 GT-S7566 -r CHNReplace CHN 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 GT-S7566 / CHN 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).