How to reset Firmware Password? iMac, Lion, 10.7.3

I forgot the Firmware Password, and want to reset it.

How can I do it?

No DVD included when I bought it.

All the startup keys, like C, N, T, D, CMD+s, CMD+Option+p+r, CMD +v, Option, and Shift, does NOT work.

To add or remove DIMMs does NOT work.

Please, give me some helpful answer.

iMac, Mac OS X (10.7.3)

Posted on Apr 4, 2012 9:34 PM

33 replies

natere2

Level 1

5 points

Jul 1, 2015 6:09 AM in response to ResetFirmwarePassword

Have you checked this out?

Worked for me.

Apple is off the rails with this iCloud vaporware crap!

Kurt Lang

Level 9

68,508 points

Nov 11, 2016 6:43 AM in response to Aj Elmend

That doesn't work on Macs made after 2010.

Klaus1

Level 9

52,873 points

Nov 11, 2016 10:51 AM in response to ResetFirmwarePassword

If the computer has a firmware password set, you will need to contact Apple.

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How to reset Firmware Password? iMac, Lion, 10.7.3

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