For several days now my vtv stb keeps popping up an info box announcing the stb is about to update and i wont be able to use the box for 4-6 mins. I can only press ok. When I do it performs some sort of activity taling less than 4 mins - 30 secs maybe - and service is restorded. However maybe 5mins later it does it again. Endlessly. The stb is unusable. Tried power down ab three finger resets to no effect. Help.