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You can take a look at this great article for a super deep dive into the firmware password setup.

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The agent will use that code to send you a file so you can create a USB boot disk that will remove the firmware password. They will walk you through a process ( Shift-Control-Option-Command-S) that will show you a code that you can give the Apple support agent.

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If you have proof of ownership, Apple can remove the firmware password and retain your data for Mac Devices from 2011-2020.

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How to remove the firmware password with Apple Support. You will not be able to find the previous owner and you do not have proof of ownership. You are out of luck if you have 2011-2017 Mac. Sometime later you need to enter macOS recovery, only to find the firmware lock. LetвЂ™s say a person sold you a Mac with a firmware password on craigslist. Apple will verify proof of ownership and also ask to verify your identity. What can you do if you forget the frmware password? sudo firmwarepasswd -delete = Disable the passwordДҐ. sudo firmwarepasswd -verify = Verify your password sudo firmwarepasswd -check = Check whether a password is set sudo firmwarepasswd -setpasswd = Set a new password You can enable and disable the firmware password inside macOS using terminal.app How to Enable & Disable Firmware Password in macOS? Turn on вЂњFind MyвЂќ through iCloud, which enables the firmware password & Activation Lock. Use the firmwarepasswd binary вЂ“ sudo firmwarepasswd -setpasswdДЈ.

QuitВ the utility, then choose Apple menu > Restart.Дў.

Enter a firmware password in the fields provided, then click Set Password.

When the utilities window appears,В click Utilities in the menu bar, then choose Startup Security Utility or Firmware Password Utility.

The firmware password can be set in three different ways. You now need to be an admin user that has a SecureToken to access the Startup Security Utility menu to set and remove the firmware password.

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This OS software can now be re-installed or updated using a 2nd Mac and Apple Configurator 2. The chip runs an operating system called BridgeOS.

(2018-2020) Apple added the T2 security chip.

The only way to remove the firmware password was to contact Apple.

(2011-2017) Apple changed this when they soldered the memory to the logic board.

(2006-2010) вЂ“ The firmware password could be removed by removing the battery, one stick of ram, and resetting the PRAM 3 times.

If you have the firmware password enabled and you hear someone say вЂњI reset the PRAMвЂќ вЂ¦.

Internet Recovery вЂ“ ( Command Option R or Command Option Shift R).

The following startup options will work, but you will be prompted for the firmware password. If you enable the firmware password, the following startup items are disabled. The Apple article below details different startup modes. When you set a firmware password, users who donвЂ™t have the password canвЂ™t start up from any disk other than the designated startup disk. Long story short, if your Mac lands in the wrong hands and you do NOT have the following items enabled below, all your data is at risk!.ДЄ person could access your data via Target disk mode or macOS Recovery, even if they do not know your user password! They canвЂ™t boot into target disk mode or recovery to access your files. This mode protects against someone who wants to get your data. The firmware password was designed to protect your Mac. What does setting a firmware password on a Mac do?

How can I protect my Data on an Intel and M1 Mac?ДЎ.

What does this mean for education, small & large companies, home users, computer recyclers, and criminals?.

How long was this new way possible? Does anyone at AppleCare know about this?.

Removing the firmware password on a T2 Mac with Apple Configurator 2.

How to remove the firmware password with Apple Support.

What can you do if you forget the firmware password?.

How to Enable & Disable Firmware Password in macOS.How to you set the firmware password in recovery.What are the differences in firmware passwords from the following years вЂ“ 2006-2010, 2011-2017 & 2018-2020?.What does setting a firmware password on a Mac do?.I will also go over my recommendations on how you can protect your data at the end of this article. Apple Silicon M1 Mac Devices do not have a firmware password. NOTE: This information is only for 2006-2020 Intel Mac computers. After that, I will show you a new way how to remove the firmware password (and erase your data) on a T2 Mac from 2018-2020. In this article, I will go over the history of the firmware password on Intel Mac computers. How to remove the firmware password on 2011-2020 Macs + New way for 2018-2020 T2 Macs! You can now remove the firmware password (+ erase all data) on a T2 Mac without Apple Support if you forgot it.