TS2391: MacBook Air (Original), MacBook Air (Late 2008), and MacBook Air (Mid 2009): Recovering a lost EFI firmware password
Learn about MacBook Air (Original), MacBook Air (Late 2008), and MacBook Air (Mid 2009): Recovering a lost EFI firmware password
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Helpful answers
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May 5, 2016 9:56 AM in response to 杨炳锋by 杨炳锋,My macbook pro is 2010 years production, through the network recovery upgrade once Lion system, start again, according to the Commond + S or option button to enter all need password, search the web for once, at the same time hold down shift + option + command + S will appear a 33 a Hash code, my Hash code is: ****, please each elder to answer it, how to work out the password?
thank you !
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Nov 16, 2013 12:51 PM in response to 杨炳锋by Linc Davis,It is not possible to recover a password from the hash. Take the computer to an Apple dealer to have the password removed.
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May 5, 2016 9:51 AM in response to Linc Davisby DennisKharin,Wrong, It's Possible. Last 16 digits and letters is Md5 hashes containing his password, the other 16 (first one) containing info about his machine. Basically you can brute force it or rainbows tables the last 16 digits and numbers , on the good computer it shouldn't take that long...
*All information was given just for the learning purposes not for use against Apple INC.* -
Sep 12, 2016 11:42 AM in response to DennisKharinby GiveMeAnthony,The character string provided by ⇧⌃⌘⌥S at the firmware password dialog is 33 printable characters long. An md5 hash is 16 bytes long (32 hexadecimal digits) and can contain any non-printable character. So, how do you figure the last 16 digit character sequence refers to an MD5 hash containing the password?