Option A: You can assume that a firmware lock was never set and brute force the firmware lock with a HID device such as a Teensy. Remember to set the Mac up like new and register the Mac with a new iCloud account to avoid any future lock-downs. There have been occasions where the firmware lock has also been removed but I cannot contest to any exact models. But you will still have a firmware lock as far as I know as in many cases this has happened.

This is all you have to do to get past OS lock. NOTE: If you have a 2010 model MBP or earlier all you have to do is change the amount of RAM in your MBP and clear the PRAM. There are two options from this point which are explained below. This is the result of the Mac being most definitely locked from the cloud. When you try to do a re-install you are met with a lock screen shown in EX-1. In this case the symptoms would be a four digit pin lock when the OS loads. In most cases a MBP has been purchased from a third party who may have stolen it or simply forgotten to remove their iCloud account. Then maybe you will be able to decide if this procedure is for you.

Donate what you can to keep my development process alive, every little red cent helps.įirst you need to understand what the firmware lock is and how removing it will affect you. This is just short of replacing the entire chip, which is what we are all trying to avoid right? I also have a project I have been forking on called the iFLRT (Firmware Lock Removal Tool) that can be found HERE.

We use to have to remove the board, scratch back traces, and solder directly to them which can be seen in EX-1.1. The MBA is a bit more complicated without a specialty tool to interface with a header on the board. There has been much controversy on removing the firmware lock on a MBP, MBA, or similar Mac’s.

Apple efi firmware unlock tool