Depends on how old the freeview boxes are. If they are up gradeable they sound like they will need an software upgrade, which is done over the air but the units have to be plugged in and in standby to recieve it. Also, you have to go into setup and check automatic software update, or something similar is selected. Unfortunately, some sets wont be up gradeable and if you missed the download, they probably wont do them again. There is a website you can use which lists which sets are affected. Soz, cant give it here.
Dave H
August 2009