/etc/apt/sources.list-be ird be:
deb ftp://ftp.hu.debian.org/debian sid main contrib non-free
deb http://non-us.debian.org/debian-non-US sid/non-US main contrib non-free
[..]
aztan
apt-get update
apt-get dist-upgrade
esetleg ha makacskodik, hasznald az apt-get -f (force) cuccot. Utana mukodni fog.