i tryed one of does bios with the cheksum 28D7 from your site and didnt worked , donwloaded from another place with same cheksum and it worked .. going to upload this working bios .
[QUOTE = "ThienBui, post: 84040, member: 6"] contraseña en E / S KB9012 https://vinafix.com/threads/dell-3721-la-9105p.16403/ [/ QUOTE] ok a Programar el KB9012