Update version 4.2.2 through 4.3.1 for Android devices.
1. Open the Settings app. 2. Go to System or About phone. 3. Select Update software. 4. Choose your device model and follow the prompts. If you need more details, let me know!
What device are you using?
The device must support carrier approval for the update.
Navigate to settings, then select about phone, system updates, and proceed from there.