sudo apt-get update sudo apt-get upgrade sudo apt-get dist-upgrade sudo sed -i /deb/s/wheezy/jessie/g /etc/apt/sources.list sudo sed -i /deb/s/wheezy/jessie/g /etc/apt/sources.list.d/raspi.list sudo tee -a /etc/apt/sources.list.d/raspi.list <<< "deb http://archive.raspberrypi.org/debian/ jessie main ui" sudo apt-get update sudo apt-get upgrade sudo apt-get dist-upgrade