This article lists the firmware versions of Macs which have been successfully updated with Catalina Security Update 2021-004, and should also apply to those updated with Mojave Security Update 2021-005.įor older Macs and earlier versions of macOS, please refer to the previous listing of firmware versions. MacOS 10.15 Catalina brings EFI firmware updates for all supported models, and subsequent updates have changed those for most models too.
