Upgrade debian

To upgrade, change references in /etc/apt/sources.list from stable to unstable:

deb http://debian.crosslink.net/debian/ unstable main non-free contrib
deb-src http://debian.crosslink.net/debian/ unstable main non-free contrib

Then run:

# apt-get update
Get:1 http://debian.crosslink.net unstable/main Packages [1931kB]
Get:2 http://debian.crosslink.net unstable/main Release [82B]
....

Then you can upgrade by:

apt-get -u dist-upgrade

source http://www.linuxmigration.com/quickref/debian/gen.html