02. Theme Options - Theme Updates
Automatic Theme Updates
This is the easiest way to update a theme and it is controlled by the theme options panel.
You need activate the option and put your "Item Purchase Code", completed this step you should be notified in your Wordpress Dashboard as soon as an update for the theme appears.
This feature might not work on absolutely all enviroments, so if you see that it's not working you'll have to update manually the update for the theme..