I tried to flash the dump of this post but it didn't work.

I’m trying to unlock the BIOS on my HP EliteDesk 800 G2 SFF. The computer works fine, but the BIOS setup (F10) is locked with an Administrator password that I don’t know. I can still boot with F9, but I need to get rid of the password.

What I’ve done so far:
  • I have a CH341A programmer with SOIC8 clip.
  • I successfully read the 16 MB BIOS chip and saved my own dump.
  • I opened it in UEFITool and located the NVRAM.
  • I tried cleaning the NVRAM (filling with FF) and also keeping the header and cleaning only the
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