To update the software
  1. Make sure your device is fully charged and connected to Wi-Fi.
  2. Swipe down from the Notification bar and tap the Settings icon.
  3. Scroll to the System section and tap AT&T Software Update.
  4. Tap Check for update.
  5. Follow the on-screen prompts to download and install the update.
  6. The device automatically restarts once the new software successfully installs.

To verify the software update
  1. Swipe down from the Notification bar and tap the Settings icon.
  2. Scroll to the System section and tap About phone.
  3. The device has the latest software if the Baseband version and Build number match the current update details.

To troubleshoot the software update