Updating macbook

23-Sep-2019 19:55

In short, the firmware cannot be updated either by upgrading mac OS to High Sierra or by bless manually. My Mac Book pro info: Attempt 1 - update it by updating mac OS from 10.12.6 to 10.13.2 Failed with error message "An error occurred while verifying firmware". ROM does not support APFS Clearing automation and attempting to rebless. Operation: Verify firmware failed, Failure Reason: Error Domain=com.apple.osinstall Code=512 EFI current Version: [0000000000D30008] EFI update Version: [0000000000D70000] /Volumes/bless.

Yd D7/EFI/APPLE/FIRMWARE/MBP91_00D7_B00created successfully Writing firmware update installed cookie (/Volumes/Mac SSD/mac OS Install Data/.

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If your Mac is running El Capitan, Sierra, or High Sierra, here's how to download mac OS Mojave.

When a SDD or HDD is formatted to use a GUID partition scheme by the Disk Utility or command, the EFI partition is automatically created.

Basically, the firmware update is copied to the FAT32 formatted EFI partition. Basically, the same procedure occurs for firmware updates on my HP PC running Windows. Having to update the firmware to run High Sierra makes sense.

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