Here's how you can use the terminal to update your Linux Mint 17 system. This is a nice alternative to using Update Manager.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each:
sudo apt-get update
sudo apt-get upgrade
According to Binary Tides:
Linux Mint 17 has been released and is named Qiana. Mint is one of the best linux distros that targets desktop users with focus on usability and simplicity. It comes in various flavors with different desktop environments like Mate and Cinnamon and different base distros like Ubuntu or Debian.More at Binary Tides
Additional Linux Mint resources