My mac is unsupported, so I downloaded MacPostFactor and got my mac to 10.9. Now I am wondering if I can update it to 10.9.5. When I downloaded the files from the App Store, it started installing updates but when it was done it said : An error occurred, Failed to install updates. Then it didn't want to start.I had to reinstall the whole system. So I am wondering if I could somehow update my mac.