That model is no longer supported and I believe it's impossible to activate it anymore. Sorry.
Edit:
@sajith, it was mentioned in this post that you may be able to activate an old device by taking the link code displayed on the screen and adding it to https://my.roku.com/link/qr/. For example, if the link code displayed is 44TQ6, try going to https://my.roku.com/link/qr/44TQ6. I'd be surprised if it works, but it's worth a try. I just don't know if it's even worth bothering with a device that's no longer supported.
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.
