Two upgrades and two fresh installs without any errors or issues. The upgrades used sources.list files that only included stable "main" but the fresh installs from a netinst.iso added "non-free-firmware" in addition to bookworm "main". Sure would be nice to have an option to omit the "non-free-firmware" lines from our own sources.list file during install. I used the non-graphical installer and looked everywhere for the option to omit "non-free-firmware". I could have dropped into a terminal shell and edited the "/etc/apt/sources.list" file myself but I was just following the installer's menu. Keep it "free" as in freedom! Thanks!