Do you remember the SSID (network name) and password of the old network? If so, then there's some hope, but there's no way to do it using the buttons on the TV. If not, then the easiest thing to do is to go to Walmart, Target, etc. and pick up a Roku Voice Remote or a universal remote that supports Roku TVs.
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.
