Nasty macOS flaw is bricking MacBooks: Don't install this update
I am tracking the issue here.<p><a href="https://mrmacintosh.com/10-15-4-supplemental-update-bricking-small-number-of-t2-macs/" rel="nofollow">https://mrmacintosh.com/10-15-4-supplemental-update-bricking...</a>