How to install a fresh copy of macOS from macOS Recovery (Internet Recovery)

An error occurred validating the installer data. The download is either damaged or incomplete.

Screen Shot 2019-11-20 at 8.33.55 PM

How to fix "Untrusted_Cert_Title"

Untrusted_Cert_Title-min

How to create a bootable installer for macOS

If an installer says it can't be verified or was signed with a certificate that has expired

How to reset the System Management Controller (SMC) on your Mac

Reset NVRAM or PRAM on your Mac