How to make moded bios in to payload file after extract(Dell)

The PhoenixTool, it extracting from that exe soomany files, one file call “XPS_15_9560_1.19.2” directly extracted to desktop, I don’t know what type’s of bios file it extracted, is it HDR bios file extracted from exe? another bios file call “BIOS0.BIOS” extracted to “BIOS” folder, what is it? is it same HDR bios file renamed by PhoenixTool in to .BIOS? is there any proper guide available about PhoenixTool extraction things?

What to do with modified HDR file(extracted from dell’s exe file)? can I flash it? which tools can flash the bios from HDR file? I heard cctk can do that, but don’t know how