BIOS EFI FIRMWARE CHIP A2116 APPLE IMAC 21.5" LOGIC BOARD NUMBER 820-01237-A
The BIOS chip needs to be soldered onto the board. to FIX a corrupt (bricked) EFI firmware BIOS Chip. to remove EFI firmware password. This item will not remove the OS password. You will need a new chip for the following purposes.