rEFIt is a boot menu and maintenance toolkit for EFI-based machines like the Intel Macs. You can use it to boot multiple operating systems easily, including triple-boot setups with Boot Camp. It also provides an easy way to enter and explore the EFI pre-boot environment.
The MacBook EFI Update will update the EFI firmware on your notebook computer.
This free-to-use app will update the EFI firmware on your Mac mini computer.
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