HP Envy x360 flash utility

[ptek12]

That is why I sent you AFU files, and sorry I only sent old ones for DOS before, I just sent you modern DOS and EFI Files in PM.  EFI is like DOS, but more modern, you can boot to if from the BIOS (on exit screen usually, launch EFI Shell)

See if you have any luck with the EFI files I sent, if not I'm pulling out the stock ones for you now, but there's 30+ files in the exe without extensions, so I have to try and guess by size and how it looks in hex what's what.  Signature/Key files I would never be able to name correctly, the extension I mean from looking at them in hex, which is which since it's an encrypted block only for each.  I can get you the efi files from the exe package though, then you rename as you mentioned.  Hang on a bit if you're catching my last PM before this (I sent 3 different up to date EFI AFU Flash files in PM)

Stock BIOS (F19 and F17) only contains AFUWin.exe and AFUWinGUIx64, neither exe contains EFI flash files like I already sent you.  So if you must have some EFI File to use, only the one I sent you could possibly work.  There isn't any EFI files used during this BIOS flash while it runs it's normal procedure, only AFUWIn/AFUWinGUIx64.

So you will have to either get it going with the EFI files I sent and the method you mentioned, or boot to DOS and use the 16MB file I sent you and one of the DOS versions I just sent in PM.  If you do, either, only use the /P switch after, like so >>> toolname.exe biosfilename.bin /P

So if I understand correctly, the HP flash utility uses AFUWin.exe and Win GUI that may be run in DOS, 

I can do that. I'm not pushing for reusing .efi, just thought it's the correct (safe) way of doing that.
If this is not right I can do the AFUWin indos in format you suggested >>> toolname.exe biosfilename.bin /P
Is this what you want me to try? I can do the F19 first to see if it works, to preserve bootability, hopefully, and then go F17...
Makes sense? Or did I misread? what AFU ver. would be the best, out of many you sent?