I was checking “Software Update” on my MacBook Air and was pleasantly suprised there was a firmware update. The EFI firmware update was issued yesterday for the latest 11-inch and 13-inch MacBook Air models. It addresses several issues especially on display problems, kernel panics, and other issues.
The new update, known as MacBook Air EFI Firmware Update 2.0, addresses a “rare” issue with the machine booting or waking from sleep to a black screen or becoming completely unresponsive.I have experienced this only once ( display suddenly goes black and notebook need to be restarted ) in the first week but was advised to wait for the firmware update
After the update, during rebooting you will hear a loud ” explosive sound” – it is freaking frightening but I noted in the various reports is normal.
This update resolves a rare issue where MacBook Air boots or wakes to a black screen or becomes unresponsive. This update is recommended for all 11-inch and 13-inch MacBook Air (late 2010) models.
The MacBook Air EFI Update will update the EFI firmware on your notebook computer. Your computer’s power cord must be connected and plugged into a working power source. When your MacBook Air 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 on your MacBook Air during this update.