I'm following the instructions here on installing a fresh installation of Raspbian. I get as far as 'Choose a mirror of the Debian archive' but I am then greeted with the error 'Bad archive mirror' when trying to retrieve the mirror (see screenshot from another question). However, as far as I can see there are no errors, and as far as I know the network is configured correctly.
If the network isn't configured correctly what would be the best way to test for this?
Completely new to this sort of thing so apologies if above doesn't make sense