820-3662 efi password

[raainxx]

Hi,
how can i remove efi password on this board, i try to clean the efi with a clean me but always ask the password.
i use this tuto: https://www.ghostlyhaks.com/blog/apple-efi/25-clean-me-region#comment-106
is it the good job for remove efi password?
thanks

 

[gcain]

Did you do a PRM reset?

You have to do a PRM reset at the first boot or it locks again.

 

[G.Beard]

Hi,
how can i remove efi password on this board, i try to clean the efi with a clean me but always ask the password.
i use this tuto: https://www.ghostlyhaks.com/blog/app...on#comment-106
is it the good job for remove efi password?
thanks

Just search $SVS and FF the string of garbage after it. There are a couple of instances of $SVS.
I have seen a lot of people have issues with no POST after using those purpose made tools.

At least if you do it manually you can save a backup first.

 

[raainxx]

No Title

ok i try your solution, and it remove the passcode but i have another problem, like this picture:
why? do you have ever see it?
i have a backup of the original ME.

 

[PhilipC]

after modifying the efi did you do a pram reset on the first boot?

 

[G.Beard]

ok i try your solution, and it remove the passcode but i have another problem, like this picture:
why? do you have ever see it?
i have a backup of the original ME.

Why did you clean the ME if you only want to remove the password?.

Take the original untouched dump and just remove the PW.
PRAM Reset
Do not boot, do a clean install.

...... Was this Macbok "bought at a car boot sale" ?

 

[raainxx]

Ok the problem is solved, i make a pram at first boot and clean install.
I don't know for the pram reset, i launch a clean install.
No the customer say "his dad is dead and he don't know his password" is it better?
i think a clean me restore the computer without pw. i know now.
Thanks g.beard