I'm not able to downgrade from catalina, I want to my system should work same liek before when i was using mojave or siera
I'm not able to downgrade my macbook pro 2012 from "catalina" I try all tutorial when I erase the old hardsic but still in base system catalina coming,,,, and made the usb bootable but cannot load what the ssssstttt.
MacBook Pro 15", macOS 10.15
