I have a Macbook pro mid 2012 that I didn't use it for a long time so I didn't upgrade it .
now I cannot install anything from app store because all of them need new version of OS ,
Mac OSX Mountain Lion 10.8.5 is a handy operating system with more than 200 features which has improved user’s experience. Mountain Lion has got its inspiration from world renowned iOS which is a widely used operating system for iPad and iPhone. Mountain Lion Desktop Support Mountain Lion Desktop Guides Lion Desktop Support Lion Desktop Guides. Updated toleda's patched AppleHDAs to a new version of 10.8.5 Supplemental versions to fix missing localization. Updated Customization - System Definitions - Mac Pro - Mac Pro 3,1 to have a valid random serial number.
also I cannot install any version of newer OS .
I decided to upgrade OS step by step , I search OS Mavericks in app store but it doesn't show anything , I searched in google and downloaded 10.9.5 and other update versions , but it says you should have 10.9 first .
also when I click on ' software update ' it says ' No updates available '
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can anyone help me plz ?
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