ASUS G750JZ - Modified bios marked as "invalid" ? Pls help?

So I have the said laptop.
I love this machine. It's superb.

There is only ONE thing I want to turn off.
Hyper-threading.

Now, as you might have already guessed... there is no option to do so.
I downloaded the "AMIBCP" tool - thanks to Prema's Clevo thread.

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In the CPU section, I found the Hyper-Threading option immediately.
Here comes the twist. I save the file with and without "String optimization" (just in case.)

1) If I just edit the option, it says the build date is older than my current BIOS.

2) So I grabbed a Hex editor, and bumped up the bios file version to 209 from 208, and made the build a day younger.

3) Now ASUS WinFlash says its a valid file..but then it refuses to flash it after I click next.

4) BIOS flash tool (Ezflash?) outright refuses to flash the file. It didn't even complain about the date or version. It just said the same, invalid file.


What am I missing?
How can I produce a valid image for the BIOS flash tool?
I only need THIS one value changed. Nothing else. Just hyper-threading off and thats all I'm not touching anything else in the BIOS file ever.

Thank you in advance!

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I would already glad if someone could tell me which HEX value is this (see attached pic). Because I think the AMI tool modifies the entire image, thus it gets ...corrupted (?).

Anyway. If I could just flip this single value, it would be all good.

  ht_off.jpg (Size: 397.32 KB / Downloads: 1)

  G750JZAS208.zip (Size: 2.22 MB / Downloads: 0)