please help Only current machine firmware or factory firmware can help you. In otherwise you will have lot of bugs , freezes , shutdowns, uncorrectly works etc
Only factory firmware can help your bios is bad now have lot of bugs , freezes , incorrectly works etc
https://www.vinafix.vn/threads/apple-a1502-emc2678-820-3476-a.13348/#post-19260 both files are the same as bi?