You can use IPSW files on Mac or Windows, both require i Tunes to work properly.
To use the latest version of IPSW firmware files to update or restore an i OS device, you’ll want to be sure you have the latest version of i Tunes installed as well.
Application software for the i Phone, i Pad and i Pod Touch can be downloaded from the App Store.
i Tunes 12.5 is the most recent major version of i Tunes, available for Mac OS X v10.9.5 or later and Windows 7 or later; it was released on September 13, 2016.
Each time Apple releases an i Tunes update, new features, bug fixes and support for new devices are added to the software. In some cases, i Tunes will prompt you to update on its own with a pop up window informing you of the update. On a Mac, i Tunes updates are performed via the App Store program that comes bundled with Macs.
It's a great music library, giving you lots of ways to browse and organize your music.
You can easily make playlists manually, and set up automatic ones like 'recently added', that shows you what you imported over a set period of time.
IPSW stands rather simply for i OS Software, and IPSW files are basically just individual firmware downloads for specific i OS devices.
These files can be used to update i OS devices manually with the help of i Tunes.