You need to configure your Internet access before continuing.
In 99.9% of the cases updated packages must be downloaded from the Internet; the only exception that comes to mind being when you download the packages from another machine and use that machine as a Personal Mirror.
So, your Internet Access must be configured before you try to download those updated packages and the update wizard detected yours unconfigured. Please refer to the Internet Access section help pages for details on how to configure your Internet connection.
Clicking on will take you to the default
(starting) page cancelling this wizard.