So we went on holiday 3 weeks ago and during the holiday my girlfriend received a notification saying that her iPhone was locked from iCloud. We got around it and changed the password to iCloud. Yesterday when we arrived home, and turned on the MacBook it was firmware locked. We can't do nothing.
I called Apple which could not help. Apparently they need to send it in for service which could take more than a week. Since uni starts tomorrow we really need to fix this ASAP!
Anyone in this community that are able to help?
It is a MacBook Pro from 2015 with no access to battery or RAM sticks.
This really really sucks!!
Best Answer
My suggestion is to create a bootable flash drive with the macOS Sierra installer on it.
Preparation:
How to create a bootable flash drive:
First, make sure your USB flash drive is formatted and named as “Untitled”.
Now, your USB flash drive is ready.
Launch Terminal (Finder/Applications/Utilities/Terminal)
Enter the following text into Terminal. It may be best to just copy it from here (try triple-clicking) and paste it in.
sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ macOS\ Sierra.app --nointeraction
Hit the Enter key.
Terminal will ask you for an admin password (the one you use to log in). It won’t display characters when you type, so just do it. Hit Return. You’ll see that Terminal erases your drive. Then, Terminal will copy the installer file to your disk. This will take a few minutes. When the process is complete, the Terminal window will report "Done." You can quit Terminal and your bootable macOS Sierra installer USB drive is ready for use.
How to go further..