Debian Begins A General Resolution To Decide What To Do With Non-Free Firmware

[Danielsan]

They should simply rename "advanced install" in "desktop install", from there you can select to enable non-free repository..

[PeterB]

And once again a user reports an install fail through missing firmware

https://forums.debian.net/viewtopic.php?f=17&t=152712

and the first solution suggested to the user with no internet, is to download the missing firmware....