The system will read the file and properly reset the firmware password stored in the Atmel chip. The Firmware Password Set parameter appears under the Security. The firmware password is a low level password that is set at the booting sequence and with firmware password set in a Mac the users will have to input the password during the boot sequence. Place the file on a special USB boot drive and hold Option to load the boot menu and select this drive. Procedure In the Devices view, click on a device name to open its Device Information panel. Apple Macintosh computers come with different layers of security, and a firmware password is one of them. 
Submit the hash to Apple, where someone will put it through a special utility to create a keyfile that is specific for your machine. Try to Reset or Disable with Firmware Password Utility Reboot the Mac and hold down Command+R keys in order to enter recovery mode.
In this hash, the first 17 digits are an identifier for the system's motherboard, and the last 16 digits are a hash for the password. A response from the device after it processes the command to set the firmware password.
Press Control-Option-Command-Shift-S to reveal a 33-digit hash (mixed letters and numbers) that contains an identifier for your specific motherboard and the Atmel chip used for your system. 
Boot with Option key held to display the boot menu's firmware password prompt. Either take it into an official Apple store or follow the following instructions to submit it online Unfortunately for you, and fortunately for the security of your computer, to reset the EFI password you will have to go through Apple.
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