To get the most out of your Android phone, you should download the latest available operating system.
1. Make sure your device is connected to Wi-Fi.
3. Select About Phone.

4. Tap Check for Updates.
If an update is available, an Update button will appear. Tap it.
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5. Install.
Depending on the OS, you'll see Install Now, Reboot and install, or Install System Software. Tap it. Your phone will reboot.
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Need more help with your phone? Check out Device Support, select your model, and choose Device Tutorials.
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Feb 11, 2016 To provide a more consistent, reliable firmware update experience and improve discoverability of important system firmware updates for end-users, Windows 8 supports a platform for installing system and device firmware updates via driver packages. Learn how the system firmware update feature of Windows 8 works.