Easy way to set up your Roku devices, Roku express/Roku Express+ Activation, Roku tv setup, Roku Ultra Activation, Roku Streaming Stick+ Activation, Roku setup, and Roku activation code. you just need to follow a few setups for Roku ultra activation. First of all, you need to Setup your Roku devices. After that, connect your Roku devices to the internet then you will see a link code in Roku display after that you need to visit here www.roku.com link account activation and enter the link code on website and submit.