My understanding is that the S2 TIVO can be updated via Ethernet by way of USB to Ethernet adapters. Also I was told by a DirecTV person that if no phone line is available that the DirecTivo will update via the Sat steam you just can't get pay per view. I got that info by telling the person that I no longer had a hard line at home and unless they had an adapter to connect it to a Cell phone ET wouldn't be able to phone home.