In case you are running old Raspbian OS on your Raspberry Pibox, there is new version of Raspbian OS and you can easily upgrade the distro on the box from command line. Here are the commands:
sudo apt-get update sudo apt-get dist-upgrade sudo apt-get install raspberrypi-ui-mods
Once done, reboot and you should be good to go with new Raspbian OS on your Raspberry Pi box 🙂