TiVo Wireless N Adapter Fails After Fall Update 20.3.7.1a

Both of my TiVo Premiere units updated to the latest fall update but the one connected via WiFi was having network problems.

It would pass network diagnostics and would connect to the TiVo servers but would not get account information from TiVo or go beyond that point. A reboot of the TiVo, the wireless N adapter and router did nothing to fix it. There were a number of error codes that the TiVo generated but they all seemed dubious. The bar at the top of the TiVo Central menu that normally shows ads and other thing they think you might like was blank or said that TiVo services were unavailable at this time.

The answer was to reset the wireless adapter and reconnect it to the WiFi network. Here is how to do that.
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