I take it to mean that you upload content from the internet to the TV system. The content comes from the internet. He's saying that as of yet, you can't upload to your set-top box, but that may all change in the future.
In the modern context "upload" is an error. But the original was evidently written a very long time ago, when the Internet was new. I would speculate that the distinction between uploading and downloading had yet to be clearly made.