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Select Revive device to bring the dead Mac back to life.

Right-click on DFU Mode, and select Advanced.

The DFU Mode window should pop up on the screen of the functional Mac.

Note: The Apple logo should briefly appear on the screen while you’re holding down the four keys.

Then restart the bricked Mac using a special key sequence: press and hold down the Power button for one second, then press and hold down the right Shift key, left Control key, and left Option key.

Go to the Applications folder and launch Apple Configurator 2.

Use a USB-C cable to connect the two macOS computers.

If you don’t have a second machine running macOS Catalina or newer, go to an Apple Store and have Apple’s experts revive the chip for you.

An original USB-C to USB-C charge cable.

The latest Apple Configurator 2 version installed on a second MacBook running macOS 10.15.6 (macOS Catalina) or later.

Rest assured, data stored on the startup volume or any other volumes won’t be affected. Basically, you need to update the firmware on the Apple T2 Security Chip.

What to Do if Your Mac Won’t Boot Up After Installing macOS Monterey Revive Your Macįirst, check if you can revive your Mac.

What to Do if Your Mac Won’t Boot Up After Installing macOS Monterey.