How to find and delete Mazda Navigation files after Update

Hello, I just downloaded the Mazda Toolkit and updated the Navigation Files on the SD card for my Mazda. I noticed that these files take up around 5-6 gigs and I really need that space. The files were not auto deleted after the process was finished and I cannot locate the files to manually delete them. Does anybody know how to find them. They may be hidden files at this point. There was also supposedly a back of the original SD files and I cannot find that either. The Mazda Toolkit in applications is only 28 megs so i know its not in there. Does anybody know how I can maybe just do a search for the most recent files on my mac?