How to Upgrade kali 1.1.0 to 2.0

Upgrade to Kali 2.0

Kali Linux users can upgrade their 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. 

open : 

/etc/apt/sources.list in leaf pad

and delete all (else replace old kali sources )  and add 


deb http://http.kali.org/kali sana main non-free contrib
deb http://security.kali.org/kali-security sana/updates main contrib non-free

and run 
apt-get update 
apt-get dist-upgrade

after finish hit reboot

this method will take 2.6GB of online data.. and take much time .. depends upon your dataspeed 


you can also run this cmd in terminal (copy paste it )


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
EOF

apt-get update
apt-get dist-upgrade # get a coffee, or 10.
reboot