How to update site from 6.2 to 6.6?

I have a site that was built with 6.2.3 that I want to update. The last time I did any HTML/CSS was when the site was built, which was some years ago, so I am rather rusty and I am a bit lost as to how I update the Foundation files.

Do I download the latest version and over-write the files in the /js/* directory? The file names don’t seem to match up very well - the /js/ directory on 6.2.3 seems to have a foundation.core.js whereas the current version I downloaded has a foundation.js - or am I looking in the wrong place?

We have changed the way the files are built. The only things you need are foundation.min.css and foundation.min.js.

Alternatively you can use the old file structure, see