Download the installer on a connected device and transfer it to your offline PC via USB.
This is the most recommended free tool. You can simply right-click any DMG file and select 7-Zip > Extract files to view and save its contents . dmg extractor offline activation key
She didn’t expect anything to happen. The extractor, true to its name, asked only for the key and then paused, as if waiting for permission to be real. She typed it in. The key accepted. For a moment the laptop hummed like a living thing. Download the installer on a connected device and
Standard versions of DMG Extractor usually require an internet connection to communicate with the developer's server for the initial validation. true to its name