It's wrapped in a user-friendly interface made from a single window with a neatly organized structure, where you can open. ipsw file, as well as for the OS X Mavericks Developer preview by extracting the Developer Preview.app or InstallESD.dmg file to your Windows machine. The tool can be used for testing an iOS beta version on your iPad, iPhone or iPad by extracting the. It doesn't contain complicated options or configuration parameters, making it accessible to all types of users. DMG Extractor facilitates a simple method for exploring Mac-formatted disk image files (DMG) on Windows computers, as well as for launching and extracting files.