How do I update the TV software?
To update via the Internet, press Quick settings > TV options > Settings > Device Preferences > About > System update > Internet and press OK, then follow the on-screen instructions. You can also check for updates from the Home screen by selecting the Notifications icon from the top-right corner and pressing OK. A high-speed broadband Internet connection is required. (Page 16)
From the official Sony WH-1000XM4 Wireless Noise-Canceling Headphones manual, page 16
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