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I went to the Apple Store and there I was trying to unlock my MacBook Air because of some firmware password. This guy tells me to remove my device from my account and after that it needed the serial number? How do I get that information back?
Earlier Mac models
A Firmware Password if forgotten
According to this Apple Support Document, it would require the user to present the Original Proof Of Purchase Before Apple would even attempt to unLock this device
Set a firmware password on your Mac - Apple Support (CA)
To find the Serial Number of this computer log into My Apple ID and look for Devices
If this computer is registered to your Apple ID Account - it should appear listed in Devices
The Serial Number would be also listed
A Firmware Password if forgotten
According to this Apple Support Document, it would require the user to present the Original Proof Of Purchase Before Apple would even attempt to unLock this device
Set a firmware password on your Mac - Apple Support (CA)
To find the Serial Number of this computer log into My Apple ID and look for Devices
If this computer is registered to your Apple ID Account - it should appear listed in Devices
The Serial Number would be also listed
You can remove your MacBook from find my via Turn off Find My on your devices and items – Apple Support (UK)
and see this link on where to find the serial number Find your Mac model name and serial number - Apple Support
How do I restore my info for my MacBook
