Apple MacBook Pro EFI Firmware will update the EFI firmware on your Apple laptop
computer. When it restarts, a gray screen will appear with a status bar to
indicate the progress of the update.
It will take several minutes for the update to complete. Do not disturb or
shut off the power during this update.
This update improves the reliability of booting from the network, addresses
an issue that can prevent HDCP authentication after a reboot, and resolves an
issue with boot device selection when a USB storage device is hot-plugged.
Here's other similar drivers that are different versions or releases for different operating systems: