2020. 1. 25. 11:37ㆍ카테고리 없음
Apple released firmware updates on Thursday for 2011 models of MacBook Pro, MacBook Air, iMac, and Mac mini. All of the updates improve stability and fix unspecified issues.
Your Mac can't find anything to boot from. Or more specifically, it can't find the system folder on your primary boot device. Try booting from your OS X DVD and running Utilities -> Disk Utility to check your boot drive for errors.
They also address some network booting issues. While that doesn’t affect many users, there is also a fix for other boot-related issues. Apple’s patch notes:. About MacBook Pro EFI Firmware Update 2.7 This update fixes several issues to improve the stability of MacBook Pro (Early 2011) and MacBook Pro (Late 2011) computers and is recommended for all users.
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. Boot ROM or SMC Version Information: MBP81.0047.27. About MacBook Air EFI Firmware Update 2.4 This update fixes several issues to improve the stability of MacBook Air (Mid 2011) computers and is recommended for all users. 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.
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Boot ROM or SMC Version Information: MBA41.0077.0F. About iMac EFI Firmware Update 1.9 This update fixes several issues to improve the stability of iMac (Early 2011) computers and is recommended for all users. 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. Boot ROM or SMC Version Information: IM121.0047.1F. About Mac mini EFI Firmware Update 1.6 This update fixes several issues to improve the stability of Mac mini (Mid 2011) computers and is recommended for all users.
Mac firmware restoration is the process of resetting your Mac's internal firmware to a known good state. This is a basic method for fixing an update that has problems, becomes corrupt, or fails to complete. The UP2718Q offered the firmware update as 'part' of the Ultrasharp Calibration Solution for Apple Mac OS X. The Ultrasharp Calibration Solution was r eleased by Dell on 12/22/17. In theory, it should work on Apple Mac OS X High Sierra 10.13.2 17C89 12/6/17 and prior versions released prior to 12/22/17.
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. Boot ROM or SMC Version Information: MM51.0077.10 You can use the links above to download the firmware update for your specific Mac, but you can also find the update in Software Update.