Hi everyone, I'm struggling to edit a BIOS file, I very rarely ask for help but I'm hitting a wall with this one!

I've got an ASUS X99-WS/IPMI and two BIOS files, one file is an old file from a company that has enabled the option of Bifurcation (labeled PCIe Width) on PCIE2&PCIE3, to either x16 or x8/x8, and the bios also enables Thunderbolt options, and the other file is the latest ASUS X99-WS/IPMI 4001 bios (can't link as i'm a new member)

I'm looking to run the newest ASUS file, but to also enable bifurcation like in my other file, but across all ports. I'm not fussed with enabling the Thunderbolt settings that my file has, but if I can enable this at the same time as expanding my bifurcation options that'd be amazing!!! I also want to learn how to do this so that if I need to update my BIOS in the future I can without relying on others.

I've tried playing with AMIBCP/UEFITools on an old netbook, by setting any slightly relevant options to USER but I couldn't get the CAP file to be seen as a valid BIOS file on my mobo. I can see in UEFITool (on macbook) that the ASUS file has reference to bifurcation, but I can't put all the pieces together on how to enable this!

I'd love it if anyone can help me out/point me in the direction of how to enable these bios options etc.
(I'd prefer to have the ability to choose in BIOS as I may need to move cards around my server as needed!)


Thanks in advanced
Austin