How do I perform a factory reset on this Sony TV?
To factory reset the TV, go to Quick settings > TV options > Settings and select Factory Reset. This will erase all your personal settings and return the TV to its original factory defaults. You will need to set up the TV again after the reset, including reconnecting to your network and signing into your Google Account. (Page 37)
From the official Sony WH-1000XM5 Wireless Noise-Canceling Headphones manual, page 37
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