How To Delete Existing Vortex Theme To Upload Later Version

IMPORTANT: You need to first delete a theme when you are uploading an updated version of the same theme otherwise you will encounter an error message "already theme by that name"

1) Deactivate current Vortex theme by activating any other theme instead (such as default WP theme 2010, 2011 or 2012,.. any other theme will do!)
2) Now that Vortex is deactivated you'll see a "delete" link option next to it. Click that link and delete the theme.
3) upload and activate your new Vortex theme which will be the latest version of Vortex.