Please add your comments and solutions for any specific vendor, it will be appreciated. There are some differences between vendors, and I personally have no access to any locks-affected board (my ASUS Maximus IV Gene-Z is too old and have unlocked BIOS, and my Zotac Z77-ITX has unlocked BIOS too). Try this at your own risk, I have no responsibility for any damage you may do to your BIOS or board.Īs we all know, in order to support SecureBoot technology stack, almost all desktop board vendors have enabled SMI lock and BIOS lock in latest BIOS versions, and it becomes rather difficult to flash modified BIOS because of failed security verification. Warning: This guide was applicable only to old AMI Aptio IV BIOS and cannot/should-not be used anymore!Īs I have promised to a while ago, I wrote the guide about using AMI Aptio Flash Utility for flashing modified AMI Aptio-based UEFI BIOS images.