You might need a Snow Leopard ISO file for various reasons:
: Late updates to Snow Leopard introduced the Mac App Store , changing how Mac software was distributed forever. mac os x snow leopard iso
After downloading the "mac os x snow leopard iso" file, Alex created a bootable USB drive using a tool like Etcher. He then inserted the USB drive into his MacBook and rebooted. You might need a Snow Leopard ISO file