I'm having the same problem.. I have the Roku SE... I have 3 of them.. was working fine before the update and now they won't connect to the internet.... I even did a factory reset and still won't connect to the internet but every thing else I have is connected to the same wifi and works.. I've only had these rokus for a year.. am I going to have to buy new ones? Totally sucks
I am also having intermittent internet connectivity issues starting about two weeks ago. Probably when the OS upgrade happened. I have a 3930X with OS 10.5.0 build 4201~AE. I did not have these issues over two weeks ago. I do not have this issue with my other wireless devices. I can stream video (YouTube, Netflix, Hulu, Prime) to my iPad, iPhone, and laptops without any trouble. The problem is unique to Roku.