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Removing a Mac's Firmware Password By Reflashing EFI ROM

According to Apple, the only way to remove an unknown firmware password from a MacBook (2011 and later) is to take it to the Apple Store with the original proof-of-purchase. However, I've found that there is another way, which I've been successful with for the unibody MacBook Pro--it's essentially just modifying a couple bytes in the EFI ROM, which should be simple. What's not simple, however, is figuring out how to read and write to the EFI chip. In this post, I'll talk about the process that I figured out and what worked for me.

The Official Method

Apple's method of resetting the firmware password is not reproducible, as Apple generates an SCBO file that unlocks the EFI using their private key. You can read more about this process here. The problem with this system is that, if you are in the unfortunate situation of neither having the firmware unlock pass

	VMware Workstation Pro 16.x Serials

	YA7RA-F6Y46-H889Z-LZMXZ-WF8UA
	ZV7HR-4YX17-M80EP-JDMQG-PF0RF
	UC3XK-8DD1J-089NP-MYPXT-QGU80
	GV100-84W16-M85JP-WXZ7E-ZP2R6
	YF5X2-8MW91-4888Y-DNWGC-W68TF
	AY1XK-0NG5P-0855Y-K6ZXG-YK0T4

	VMware Workstation Player 16.x Serials

	import SwiftUI

	extension Calendar {
	func generateDates(
	inside interval: DateInterval,
	matching components: DateComponents
	) -> [Date] {
	var dates: [Date] = []
	dates.append(interval.start)

	@virgo:~ $ sudo tcpdump -vvvv -ttt -i eth1 icmp6 and 'ip6[40] = 134'
	00:00:00.000000 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 200) fe80::b675:eff:fefa:1cb > ip6-allnodes: [icmp6 sum ok] ICMP6, router advertisement, length 200
	hop limit 0, Flags [managed, other stateful], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
	source link-address option (1), length 8 (1): b4:75:0e:fa:01:cb
	0x0000: b475 0efa 01cb
	mtu option (5), length 8 (1): 1280
	0x0000: 0000 0000 0500
	prefix info option (3), length 32 (4): 2a01:ffff:43f::/64, Flags [onlink, auto], valid time 7200s, pref. time 1800s
	0x0000: 40c0 0000 1c20 0000 0708 0000 0000 2a01
	0x0010: ffff 043f 0000 0000 0000 0000 0000

	"""
	Manipulate color schemes for mintty

	For simplicity, support only "value = r, g, b" format with decimal values


	Copyright 2017 Vitaly Potyarkin

	Licensed under the Apache License, Version 2.0
	http://www.apache.org/licenses/LICENSE-2.0

	<?xml version="1.0" encoding="utf-8"?>
	<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
	<xsl:key name="ISSUETYPES" match="/Report/Issues/Project/Issue" use="@TypeId"/>
	<xsl:output method="html" indent="yes"/>

	<xsl:template match="/" name="TopLevelReport">
	<html>
	<head>
	<title>Resharper InspectCode Report</title>

Discover gists

Ranger Cheatsheet

General

Removing a Mac's Firmware Password By Reflashing EFI ROM

The Official Method

SELECT LANGUAGES

How to Get Gacha URL on Android

Unofficial POSIX Shell Strict Mode

	#!/bin/bash

	#
	# replace `GITHUBTOKEN` with custom token from https://github.com/settings/tokens, having `repo` admin access
	#
	for repo in $(curl -s -H "Authorization: token GITHUBTOKEN" 'https://api.github.com/orgs/TYPO3-CMS/repos?per_page=100' \| jq -r '.[] \| .url' \| sort)
	do
	echo "Renaming ${repo}..."

	response=$(curl -s -X POST \