Projectivy launcher, problem ~~solved~~ adequately duct taped.
Stop connecting your TVs directly to the internet, I don't care what OS it's running. The trend is clear with TV manufacturers, and if your current TV OS doesn't yet inject ads into your streaming box's HDMI stream, why risk it updating? Because that's coming soon enough, and I imagine what it does, an update requiring your TV to have internet connection won't be far behind.
When? Never
Cost? N/A