The Dell SLP string insertion makes the difference. I haven't personally tested the modded bios by pantagruel as I modded it myself but parsed it & it showed SLIC 2.1.
You gain no credibility by referring readers to a faulty .rom; and it's not an acceptable apology to state that you did not bother to test the .rom. You gain no respect by refusing to admit your errors. You gain no respect by trying to divert the reader's attention from the point under discussion to your obvious observations. You gain no respect by refusing to apologise to those you have hurt. Live up to your label "Super Moderator"! Do amends!
@SvenP - the rom is not faulty, I created a fresh Windows 7 vm and it's activated using "v10 385d Dell SLIC-SLP.rom" (SHA1 = d7350310065f8794dc3c01856d5334276811e037), ditto for XP. Did you forget something, like the key and certificate?