Update the Theme

The easiest way to update the theme is to use Envato Market plugin.

Alternatively, you can download the installable lore.zip file from your ThemeForest account / Downloads and then either unzip it and upload it under wp-content / themes via FTP (overwrite the existing lore folder), or upload the file via admin under Appearance / Themes / Add New / Upload Theme (you will have to deactivate and remove your current version of the theme first).