This involves using a tool like the CH341A programmer to physically clip onto the EFI chip on the logic board and rewrite the firmware.
Note: This does work on any Mac where the RAM is soldered to the motherboard (which includes almost all modern MacBooks). 4. For T2 and Apple Silicon (M1/M2/M3) Macs remove efi password
Go to the Apple Store. It’s free and safe. If it's an old Mac: Try the RAM removal trick. This involves using a tool like the CH341A
For mid-range Intel Macs (2013–2017) where the RAM trick doesn't work, some users turn to third-party hardware. For T2 and Apple Silicon (M1/M2/M3) Macs Go
If you have an older Mac with removable RAM modules (generally models from 2012 and earlier), you can often bypass the EFI password by physically changing the amount of memory in the machine. This triggers a reset of the PRAM/NVRAM. Shut down the Mac and unplug it.
John learned that removing an EFI password is a relatively simple process, but it requires the right tools and knowledge. He made sure to document the process and share it with his colleagues, so that they would be prepared if they encountered a similar situation in the future.
If you own a modern Mac with a T2 Security Chip (2018–2020) or an Apple Silicon chip, the security is significantly tighter.