Dell XPS 17 9700 Bios Mod possible?

i just bought this notebook and want to know if BIOS Modding is possible and how.
i want of course unhidden bios features and whatever is possible?
also the BIOS OEM Key i want to change.
If i read here all the Threads iam goin crazy
Can anyone please help me what should i do or can i do?

this rar files contains:
the original BIOS File: DellBIOS.exe
the hdr file: DellBIOS.exe_decompressed.hdr
and this PFS files, i dont know if there are the right one here needed?
1 – 16 PFS Information
1 – 16 PFS Information