The EFI partition is used when the firmware is updated. I assume this EFI partition must be on the primary internal disk. Apple posted that firmware updates require a GUID partition scheme at the archived website Firmware updates for Intel-based Macs require a GUID partition scheme, although the site does not explicitly say this must be the primary drive. Our new solution, EFI Card Instant for MacBook, MacBook Pro and MacBook Air (Solderless EFI Chip). The EFI Card fixes EFI BIOS chip or firmware corruptions and boot loops that may have caused by Clover or similar EFI bootloaders. It also removes and unlocks the Mac (2010 – 2017) EFI. EFI ICLOUD BYPASS DONE RIGHT. This is a series created to help anyone interested in learning how to remove an EFI lock from any MacBook (Air, Pro, etc.). My goal is to make this as thorough and easy to understand as possible by giving you all the tools you'll need to get the job Done Right. These videos have been procured from an OS X point-of.
What Is EFI firmware password protection on Apple T2 security Chip?
Before you use Mac EFI unlock service, you should learn what EFI is and how this passcode protection works on Apple devices with the T2 security chip.
EFI stands for the Extensible Firmware Interface. By this abbreviation, you can guess that the EFI firmware passcode is not the same thing as your regular computer password used for logging in or Mac Activation Lock. Your computer's operating system bootloader is contained in the EFI. This system partition also includes your hardware's driver files. Every time a macOS device boots, it uses the Extensible Firmware Interface right before booting.
As your computer is booting, it uses the memory-mapped from the T2 security chip to fetch the UEFI firmware. UEFI stands for Unified Extensible Firmware Interface. Users choose to enable the EFI password on T2 computers to protect their devices from untrusted firmware loads during startup.
The problem comes when a user wishes to reinstall the operating system on a Mac computer, erase the hard disk, repair, or restore the device using Time Machine. During such a recovery, users often come face to face with the protection through the EFI firmware password.
In other words, if a current user or previous owner has enabled the EFI password feature in Security Boot Settings, the macOS computer will stay protected. The device will keep asking you to enter the EFI firmware passcode during startup. It will not let you choose the startup from a storage device. You will not be able to get to macOS Recovery or add modifications to the computer. Once again, the protection through Mac EFI firmware password only works on T2 devices.
Suppose you cannot recollect this passcode. In that case, your only chance to use Mac as usual and enjoy all macOS features is by getting Mac EFI unlock service.
CheckM8 EFI Unlock Software
Our CheckM8 software can unlock Mac EFI password. This tool is perfect for all macOS users who do not know or cannot remember their device's EFI firmware passcode.
CheckM8 is capable of remove the EFI password that protects macOS from unauthorized startups. The unlocking software is based on the T2 security chip and EFI exploits.
Advantages of CheckM8 EFI Unlock Service
You will enjoy all the advantages the CheckM8 EFI password unlock software offers:
- Support for every macOS device with T2 security chip if EFI password is enabled;
- No requirement to know the correct EFI firmware passcode to unlock supported Macs;
- Permanent unlocking service, meaning your Mac will be fully workable after the EFI passcode is removed.
CheckM8 EFI unlock is a user-friendly tool. When you wish to unlock EFI firmware password on Mac, you do not have to be tech-savvy. Our developers created a simple, smart software that removes EFI passcode in a single click of a mouse. You do not enter any passwords to make it work, and you can follow the built-in on-screen guides to succeed.
At every opportunity, Apple touts the security advantages of controlling both software and hardware: it's why the “It just works” slogan has become synonymous with the company. Still, Apple now has to address an industry-wide issue that leaves a portion of Macs vulnerable to hacker attacks.
The Problem
The flaw, discovered by security researchers at Duo Labs, is in the EFI (Extensible Firmware Interface) firmware, which sits beneath the operating system. EFI is the BIOS replacement originally developed by Intel that aims to overcome the limitations of the PC BIOS. Due to the firmware's level of privileges, if a hacker can gain access to it then their attack cannot be detected. That changes with macOS 10.13 High Sierra, which contains a tool validating the authenticity of the firmware running on the Mac.
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Macbook Pro Efi Firmware Update
The vulnerability allowed the CIA, for example, to spy on targeted Mac users, as a so-called Vault 7 cache of secret CIA documents released by WikiLeaks show. The catch is that the flaw isn't new and seems to require physical access to the Mac in order to work.
What Does That Mean to Mac Users?
After analyzing 73,000 Macs currently in use, Duo Labs has discovered a discrepancy between the firmware versions they expected the machines to be running and the actual EFI version installed. That leaves a security hole in the system, because although users might have the latest OS version installed, if the EFI firmware is an older version, it lacks the latest fixes of known firmware issues.
Apple released EFI updates separately, but since 2015 the EFI update is bundled in the software update Apple has been pushing out to users. However, if you are running one of the 16 Mac models identified by Duo Labs, there is a chance that your system hasn’t received any EFI update at all: iMac 7,1 to 10,1, MacBook 5,1 and 5,2, MacBook Air 2,1 and more.
How You Can Check the EFI Firmware Version
You can check what EFI version your system is running by clicking on the Apple menu and selecting About This Mac > System Report > Hardware. In the hardware overview section macOS displays the Model Identifier, the Boot ROM version and the SMC version number your Mac is running.
Macbook Pro Firmware Upgrade
You can compare that to the firmware update number Apple lists in a support document dedicated to EFI and SMC updates for Intel-based Mac computers. Apple has stopped updating that page since September 2017.
How to Update the Firmware
If the firmware version displayed in the hardware overview is older than that listed for your Mac, then download the firmware and apply the update. Or update the operating system to at least macOS 10.12.6 Sierra, because this will include all the necessary security updates and the correct firmware.
It's important to identify your Mac model, because that's how to correctly determine which firmware you’re on and how to install the necessary update. macOS won't let you install firmware that's not developed for the model you are trying to update.
The problem is that macOS won't alert users if an EFI update has failed to install on the hardware. Therefore it’s important the user checks manually, since they won't be able to close the backdoor that hackers can access to eavesdrop or steal sensitive information, and neither can Mac optimization apps. While CleanMyMac, MacKeeper, CCleaner, OnyX and the like are highly capable apps for keeping your Mac clean, they cannot alert users about the EFI firmware vulnerability.
Macbook Pro Efi Reset
Unfortunately, the same goes for anti-malware apps such as MalwareBytes, due to the EFI's nature of operating beneath the operating system software. As a result we recommend spending a couple of seconds to ensure your Mac is secure by checking if it is running the latest firmware version and, if not, upgrading as soon as you can.
EFI vulnerability isn't just related to Apple. Duo Labs has said that it has chosen the Apple ecosystem as it offered the most consistent data when compared to Microsoft's Windows PCs running Intel chips. As demonstrated by hackers years ago, the EFI flaw has been present in Windows PCs, allowing hackers to exploit it and install ransomware.
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