Apple Says It Fixed An Issue With A Security Chip A Few Macs That Bricked With That Security Chip
Apple says it identified a problem with the T2 security chip and released an update that fixed the problem. Please read the full statement below (via the shared comment of Rene Ritchie on Twitter) : We found out that Apple has a problem with the firmware on the T2 security chip that prevented a very small number of users from booting up their Macs, after updating MacOS. The updated firmware will be now included in the macOS update....