Question :

I have a Mac that can be upgraded to a more recent version of OSX (or macOS), but I never did so I’m still on MacOSX 10.7 Lion.

Today I need to install an application that needs a more recent version of OSX/macOS to run, so I need to upgrade.

I can find various new versions of OSX/macOS available for free through the Mac App Store application (which I have since I had MacOSX 10.6 Snow_Leopard), but I get an error saying that those won’t run.

Where can I get an official version of OSX 10.8 Mountain_Lion (or newer) ?

Answer :

If you have either MacOSX 10.6 Snow_Leopard or MacOSX 10.7 Lion installed on your Mac, your only option to upgrade your operating system to a newer version is to upgrade to OSX 10.8 Mountain_Lion first.

Here’s how to :

• purchase OSX 10.8 Mountain_Lion from the official Apple-website here : www.apple.com/shop/product/D6377/os-x-mountain-lion
• then wait to receive 2 eMails ; one including a PDF and one that includes a password
• open the Mac App Store application
• go to Featured –> Quick Links –> Redeem –> Redemption Code
• typ the 12-digit Redemption Code from PDF in your eMail
• then, wait for the download to complete (view in Mac App Store –> Purchases)
• then, unlock

That’s it – enjoy !