Good question. Are you looking to start all your content over or have you made edits to the theme and you’d like to remove those? If you need to start over with the theme, you can download it from this support site at https://support.organizedthemes.com/downloads/ . You can delete a theme from inside the Appearance > Themes page in your WordPress dashboard. Once the current Epic is gone, you can install it again from the new download.
Trouble seems to be my middle name this week. I tried to move my site from my computer running Bitnami to a on-line server. In the process I lost the Apache server. I restored it from a backup but the content and configuration files were missing. I have the EPic theme showing in its demo form. I can’t find the Epic zip file on my computer so I wanted to just copy the new version to my site.
I tried going to the download page from your link but only got a blank page under the DOWNLOADS head. Any clues you could give me as to how to get rolling again would be appreciated.