Need to downgrade to Yosemite to El Capitan...

Need to downgrade to Yosemite El Capitan, but I have no Yosemite under purchases in the App Store and I never saved a restore in Time Machine before moving to El Capitan :/

It's a MacBook Air 13 "provided with Yosemite - I upgraded only to El Capitan in App Store but now my Audio Interface (Avid Eleven Rack) can't stand not El Capitan, so I need to downgrade it somwhow to make it work. Is this possible?

Yes.

OS X: on OS X Recovery - Apple Support

That will return you to the OS that came on your computer when you bought it, which is just to be the operating system you want to return.

Tags: Mac OS & System Software

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