Update Kali 1.1.0 to 2.0
Kali linux a powerful penetration testing OS and few days ago its got a big update with new interface, automatic updates and more. So if you’re already a kali linux user then you can simply upgrade Kali 1.x to Kali 2.0 without reinstalling whole operating system from scratch. To do this, you will need to edit your source.list entries, and run a dist-upgrade as shown below.
cat << EOF > /etc/apt/sources.list
deb http://http.kali.org/kali sana main non-free contrib
deb http://security.kali.org/kali-security/ sana/updates main contrib non-free
If this method didn’t workout for you, it’s better to reinstalling your OS from scratch.