Unlock other models (unlock firmware lock, PIN code lock, iCloud ID lock, modify motherboard serial number, add motherboard serial number, modify ME in BIOS data, read and write BIOS data) and other functions. Once locked, if the data has been erased, then you need to reinstall the system after unlocking.įor more details on Macbook unlock Repair guide, please go to REWA YouTube channel. Unlock MacBook does not affect the local data Once locked, if the data hasn’t been erased, then the data remains the same after unlocking There are two types of lock for MacBook, PIN and EFI firmware lock Load the specific EFI firmware that matches the MacBook model for unlocking process Solder the chip to the logic board, then clean with PCB cleaner.Īpply some thermal paste and install heat sink.Įrase NVRAM and power up (press option+command+R+P+power button). Improper firmware may result in unsuccessful unlocking or slow system after successful unlocking.Ĭlear raw data, and write new data. Input the chip model number, then Read and backup chip data. (Logic board is removed from the MacBook to avoid damage to other components during the repairing process.)ĭetach the EFI chip from the logic board and then clean the chip.Ĭonnect with the unlock software. Then take out the logic board and remove heat sink afterwards. This chip is the key to the unlocking process.
Locate the EFI chip that stores information. Remove the lower case and disconnect the primary battery. We can draw the conclusion that the MacBook has been Locked by Hackers, since both two passwords failed. Another LOCK appears on the pop up window. With this blog we will share an EFI chip solution regarding to the MacBook unlock issue. please stay tuned for the next two chapters of MacBook unlock.ĮFI Chip Solution For MacBook Unlock Repair Users might be confused by the definition of PIN lock and EFI firmware lock. And the way they might have affected the Macbook. Recently, REWA has received a batch of MacBook locked by hackers.
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