Look on the router or the Tivo Network screen to find out what IP address it is using.
Open a browser window and go to:
https://<IP address of the Tivo>
Your browser might suggest a security problem with the website. Click through anyways.
You will see a user password screen.
The user name: tivo
The password is your MAK (Media Access Key).
The Man Prayer: I'm a man ...... I can change ...... If I have to ...... I guess.