Bypassing Firmware Password Locks after OCLP Updates
An EFI Lock (padlock icon) means a firmware password was set on your Mac's logic board. OCLP does not set this, but an OS update can sometimes 'wake up' a forgotten lock.
Solutions for 2012 Macs:
- RAM Swap Trick: On the 2012 Non-Retina MBP, you can sometimes reset the EFI password by changing the RAM configuration (e.g., remove one stick), then immediately performing a PRAM reset (Cmd+Opt+P+R) three times in a row.
- Check Documentation: If this was a second-hand Mac, contact the original owner. Only they (or Apple with a proof of purchase) can officially remove this lock.
- Data Recovery: Your data is safe! You can remove the SSD, put it in a USB enclosure, and plug it into another Mac to copy your college projects. The EFI lock only prevents booting and boot picker access, not data reading.
Original Question: "MacBook pro mid 2012 13 inch EFI lock after software update(OCLP)"
Hello redditors! I'm reaching out for your help.
I have a MacBook Pro Mid 2012 13-inch (Non-Retina) that got "bricked" after updating to macOS Sequoia using OCLP. Now, an EFI Lock (padlock icon) appears every time I try to boot.
I've tried every trick I know:
Removing one RAM stick to change configuration.
PRAM/NVRAM reset (holding Cmd+Opt+P+R).
Trying to boot into Internet Recovery or from a USB installer.
Despite these attempts, the Lock screen appears every time I hold any key combination. I don't want to format the SSD because I have critical college projects on it that weren't backed up yet.
Is there any way to bypass or remove this lock without losing my data? Is it possible that OCLP triggered some firmware security?
Thanks a lot for any help! 🙏
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