Download and install the free, open-source tool from 7-zip.org.
Right-click isfull.7z , hover over , and select Extract Here or Extract to "isfull/" . isfull.7z
Use the built-in Archive Utility by right-clicking and selecting "Open With," or download a free tool like The Unarchiver. Why Use 7z instead of ZIP? Download and install the free, open-source tool from 7-zip