Running your Raspberry Pi you may well be happy with the OS as it stands, but from time to time the OS, Raspbian or whatever was your choice when you set the device up. The current version of Raspbian is 7.2 and we look at how to upgrade from 7.1 to 7.2.
Check your OS release
if you are running Raspbian you can install the lsb-release package is it is not already on your system
sudu apt-get update sudo apt-get install lsb-release sudo -i lsb-release -a
Upgrade your Pi
This should show your OS release and version. If we would like to update it to the latest version then:
sudo apt-get update sudo apt-get upgrade
You will be told how much there is to download and asked if you want to proceed. Depending on the size of the download and your network speed this may take a little while, in y case about 15 minutes.
Checking lsb_release -a again we can see that it is now 7.2