How do I perform a factory reset on the TV?
You can perform a factory reset by navigating to Settings > Factory Reset (section 6.9 in the manual). This option is accessible through the Settings menu on your TV. Be aware that a factory reset will erase your personalized settings and configurations. (Page 37)
From the official Sony WH-1000XM4 Wireless Noise-Canceling Headphones manual, page 37
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