How to update the theme to the latest version?
There is a great free plugin released by Envato for ThemeForest buyers: https://github.com/envato/wp-envato-market. Once plugin installed and linked with your ThemeForest account, it will regularly check premium theme updates and propose to update our theme when new update available.
Here is a 3 min. screencast describing in details theme theme update process:
All the content get stored in your database, not in the files on the server, so you loose nothing updating the theme. We always recommend to create a backup before updating the theme.