Please read the product information for Electronic Software Downloads and Apple’s Sales and Refunds Policy carefully, as software download purchases are non-refundable. to 8:00 p.m., or Saturday - Sunday from 7:00 a.m.
When ordering Lion or Mountain Lion, you will receive an email with a redemption code for use with the Mac App Store.If you need older versions of OS X, they can be purchased on the Apple Online Store:
The current version of the Mac operating system is macOS Catalina.