To update the software
  1. Make sure your device is fully charged and connected to Wi-Fi.
  2. From the Home screen, pull down the notification shade and tap Settings.
  3. Tap the General tab, then scroll to and tap About device > Software update? > Check for Updates.
  4. Follow the on-screen prompts to download and install the update.
  5. The device automatically restarts once the new software successfully installs.

To verify the software update
  1. From any Home screen, touch Menu.
  2. Tap Settings > General > About device. 
  3. The device has the latest software if the Baseband version and Build number match the current update details.

To troubleshoot the software update