![]() I could have released the generator utility, but, hell, this will let people unlock any other laptop with same kind of BIOS, so no.Īs a bonus I had also unlocked hidden settings, which gave me a great control over my CPU and chipset. Interestingly, HP has a "backdoor" feature that lets you generate a password from code displayed, so I easily unlocked my laptop without any patches. The password checking was easy to find because AMI BIOS sources are available on GitHub. The checking part was in the same module as BIOS flasher (IIRC). When comparing the differences using an UEFITool NE A59 release that doesn’t have a modification engine, root volume of a BIOS region receives a Text field value: UsedSpace. Using the UEFI tool 0.25/28, upon opening the desired bios image or dumped/extracted biosregion, using the internal search tool (ctrl+F), enter the following ex.: dhcp4dxe in search as text. edit the exported rgn file to add the NVMe driver. End the process selecting the Save Image directly or the Save Image as for new name. Your images do not show the AMI Aptio capsule level again, maybe relevant. Luckly for me, HP didn't used the BIOS Guard/Boot Guard technology and did the checking on the PEI stage with their own module. OK, so use UEFItool to extract the Bios region only. However, my laptop will reset the BIOS if it fails the signature checking. ![]() My HP got a password after a faulty BIOS update (it just hanged up for 30 minutes on one block and I pulled the battery, never do this!) ![]() I would like to warn you about signature checking.
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