Canuck - I have 5 - 600 series boxes (1 is 630) and they have all been upgraded - was on the phone with Shaw for at least 45 minutes going room to room to update them all. Installer posted earlier that his Father-in Law is in Mexico with an upgraded 600 receiver and the new XKU LNB and still gets what we used to in years past - but no new HD channels from the G1 satellite. My concern was from another site where a poster said the upgraded receiver is capable of shutting down if the G1 satellite is not detected - making the receiver think it is located outside the Northern footprint. Hopefully this theory is just somebody with a lot of time on his hands thinking up "what ifs". I guess time will tell what is going to happen - I will be taking 4 of my receivers to my house in AZ as I always have as well as a new XKU LNB for my dish there. Later