![]() 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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