Newer HP bioses can't be modded & flashed due to RSA signing. Only way to use official HP tools to change the OS SKU & thus turn on the hidden SLIC. Just disable Secure Boot from bios, create a dos bootable pendrive & put the tools in it. Boot from it & run 'nbdmifit' (w/o quotes). No chances of brick, as nothing is flashed. If OS SKU changing option isn't present, then you need to change the PCID.
All u say to do, if i understand it all correctly, is to make a bootable flash drive and put some tools inside and boot from it and use those tools. Can i ask which tools need to put in the flash drive and use them to unlock these features of our bios? Can u please explain that to me with a tutorial or a step by step guide, because i am relatively inexperienced on that area. Really need to enable fixed to my computer to use amd's gru drivers, all i can use the HP drivers, ffs!
Tanks you very much ! Anyway, i've tried two versions of it. One crash at file loading, second crash at file saving ... :/ Howewer i've found what i looked for, then i'm angry ! if i can save the modification i want to do, i'll try to give you what you lokking for