deb http://ftp.de.debian.org./debian bookworm main contrib non-free-firmware deb http://ftp.de.debian.org./debian bookworm-updates main contrib non-free-firmware deb http://ftp.de.debian.org./debian bookworm-proposed-updates main contrib non-free-firmware deb http://security.debian.org./debian-security bookworm-security main contrib non-free-firmware deb http://ftp.de.debian.org./debian bookworm-backports main contrib non-free-firmware # deb http://ftp.de.debian.org./debian bookworm-backports-sloppy main contrib non-free-firmware