No specific info about version 1.0. Please visit the main page of How to download and install BlueStacks 4 for macOS – BlueStacks Support on Mac Informer.
Install and run macOS Catalina on your unsupported Mac.
Install macOS Mojave on unsupported Mac computers.
Create a bootable USB drive for macOS Sierra that will work with older Macs.
Install macOS Sierra on unsupported computers.
Download macOS directly from Apple servers and install it on your Mac.
Comments