Could you confirm that the best way to update the theme is to ftp the contents of the zip file to the frontier folder in my themes directory?
That could work too.
Here’s how I would do it.
– Temporarily change to another theme so that Frontier is not active.
– Delete the old version of Frontier (you haven’t edited any files, right?).
– Click the “Install Themes” tab then choose “Upload”.
– Select and upload the zip file.