Run ZXW Dongle, open the bit map to find the BIOS chip, find the connection point that's connected to the BIOS chip 8 Pin VCC, it should be under the motherboard.īased on the MacBook bitmap, we know that the 1 Pin for R8133 is connected to the BIOS chip 8 Pin. To unlock it, we need to read the data inside the BIOS chip, and then use proprietary software to remove the inside password, and then re-write information to the BIOS chip.īecause generally the BIOS chip is on the backside of the MacBook motherboard, it's complicated to remove it to read and write, so we can use special tool to read and write BIOS information without removing the MacBook motherboard. The password for the firmware lock is in the BIOS chip that exists on the MacBook motherboard. The firmware lock we're talking about is actually the motherboard password (hardware password), it can't be removed by reinstalling the system. When the MacBook screen is lit up, you will see the firmware lock interface. When the PIN code appears, restart the MacBook Air, and then hold down the ALT (Option) button before the screen lights up. Accidentally set up a PIN code by manipulating the MacBook in a random manner The user set a PIN code on the MacBook, but the user forgot it MacBook ID password stolen，the other side can remote login through our ID, directly set a password to the MacBook, which is called the PIN code,

How to unlock PIN code lock and firmware lock on this MacBook Air?Īs we know, there are several reasons for forming a PIN code: Press the MacBook power button, after entering the system, it shows PIN code lock, press the 'Option' button, it shows firmware lock. Guide: Unlock MacBook Air Firmware-lock and PIN-lock (A1466）Ī MacBook Air is locked by pin code and firmware, the model is A1466, the motherboard model is 820-00165-A, which is release in 2015.

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