Running the above script you will be asked if you want to encrypt the persistent file.Under Shell, type 'map -r' to map all disc 2. UpdBIOS.nsh (update accordingly to use proper *.CAP file) A Method: Install USB media after recovery boot to shell, you need to follow below steps 1. *.CAP( the released BIOS capsule which version you expect to update) 3. uEFI iFlash32.efi (including iflash32_temp.efi and ipmi.efi ) 2.Unlock Mac's EFI Firmware Password | CheckM8 Software A Mac with Apple T2 security chip, such as Mac Mini or Pro, MacBook Air or Pro, iMac or iMac Pro, which is EFI passcode locked CheckM8 Mac EFI unlock service A fully workable Mac computer, on which you will download and install CheckM8 software USB type C - USB type C computer cable, which will connect both Apple devices.
