I'd not only edit your last post (due to misquoting), but delete the previous post (may be too late; I think this forum won't allow deletes after another post). Either way, both of the posts by the OP less one hour before mine are non sequiturs.
I've been having the same issue with my Roku 2 and Version 7.70.
Looking at advice elsewhere to restart system I just went in and looked at, 'System update'. It tells you that it checks for new versions daily, and it does seem to check. It shows last checked as 1.30am last night or similar. It showed last update as 25th August.
BUT there's a, 'Check now' button which I clicked and it showed an update available which I did - Software Version 8.0.0 Build 4128
Roku 2 XD - 8.1.0. Build 4131 -02 Was watching Supernatural , on NetFlix channel before work today, coming to see only Home / Streaming Channels / System - Up to Date ! and its connected . 175mps + , upload 25+ . Ty for any help, plus did unplug, then that didnt work also did little reset switch.
It's not rude at all, the person they were responding to asked "what icons" - as if the Roku has more than one type of icon, it was moronic, at best. And your response does nothing to further aid in the resolution, so crawl back into your basement.
The issue is not network speed, nor wired vs wifi, nor is it age of appliance. It is a bug that Roku needs to address.