iATKOS | United Kingdom

I had a Hackintosh built a few years back, it has Mojave OS running on it. I haven’t updated the OS in last 3 years. But now the google chrome and some apps have started to notify me every once in a while to update the system OS. As I’m not aware of anything about the installation of OS in hackintosh machines, I want to know if I could just log in to the app store and download the update for the OS. Also if it gets installed will the softwares need to be reinstalled or will they work ? Please guide or refer to any helpful links. Thanks in advance