You just need a USB and access to a PC/laptop
http://www.polygon.com/2013/11/20/5127024/how-xbox-ones-emergency-offline-update-works
Seem to remember someone here worried because they currently don't have a connection at home?
http://www.polygon.com/2013/11/20/5127024/how-xbox-ones-emergency-offline-update-works
Seem to remember someone here worried because they currently don't have a connection at home?