Interruppting EFI Update

What happens when you interrupt the EFI update?
I was in the middle of running my EFI update. Now I can't seem to get my Mac running. I tried all the troubleshooting tips that was in the manual. I also refered to the update instructions again to try and restart the update. Now my LED light blinks from dim to bright.
Is there something that I can do or would have to return my laptop?

Welcome to Apple Discussions, Shugah Shane.
EFI updates should not be interrupted. But you know that now
Did you read this support topic also? You may be able to create a restore disk w/o bringing your Mac in for repair.
-mj
[email protected]

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vintherine wrote:
the.ridikulus.rat wrote:
@vintherine: Everything you mentioned in the 1st post is correct. In your case the correct commands should be:
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It's time for diner (i'm in France). I'll see this in the next hour.
Many thanks
Seems like the actual Windows bootmgfw.efi was overwritten by grubx64.efi or something else. In the boot menu Windows's entry (created by Windows installer) is usually titled "Windows Boot Manager".
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Last edited by the.ridikulus.rat (2013-09-27 18:29:09)

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Shut down your system.
Unplug all the accessories from the system
Unplug the power cord from the iMac and leave it unplugged for at least 15 seconds.
Reconnect the power cord. Wait another fifteen seconds and restart the computer.
To Reset the PRAM:
On startup, hold down these keys at the same time (must start before the grey screen comes up): command option p r
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Yes, I'm sure all the program downloaded is right. While runing the EFI update program, system always notify no need to update, however, it do need to update from 0055.B06 to 0055.B08.

Interruppting EFI Update

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