If you have a Spectrum Router and want to make a Spectrum WiFi password change , you can follow the series of steps mentioned below: Connect the Spectrum Router to a computer using an Ethernet cable. Turn on the router and open a web browser on the computer. Type the IP address of the router in the browser’s address bar and press Enter to open the router login page. Enter the router login credentials in the required fields. Click on “Login”. Click on the “Wireless” tab and follow the on-screen instructions to change the wireless password of the router.