I have installing maui-2 how can I update - upgrade 2.1? sudo "command"?

[kdemeoz]

I had read it already. I always do, before posting. Reading does not necessarily equate to understanding. In this case i asked my questions because there are explicit differences between those two files' contents, & i don't understand if that's significant. If i already understood, i'd not have wasted my time or yours by posting.

deb [arch=amd64] http://ds9-maui.s3-website.eu-central-1....com/maui-2-packages xenial main
                                                            vs
deb [arch=amd64] http://ds9-maui.s3-website.eu-central-1....m/maui-2-1-neon xenial main