Alternatively, you can download the updates to a USB flash drive, and install the update on the TV via USB (see section 4 of this article). IMPORTANT: Your TV must be connected to the Internet - through a wired or wireless network - in order to perform system updates. Troubleshooting (Android TV): What are the benefits of restarting the TV and software updates? / Issues with the sound and screen. Updates for your TV will include key features and applications, as well as bug fixes and feature improvements.
To make the most out of your Sony's Android TV, you should make sure to always keep it up to date with the latest firmware & software updates from Sony and Google.