How to move from Xfinity XB7 to XB8 Gateway.
It’s easy. Move the Coax cable from XB7 to XB8. Add power to XB8. In the Xfinity App, choose to Activate xFi Gateway. Follow the steps including, Scan the QR code at the bottom of the XB8.You will also have an opportunity to copy over your existing Username and Password.