which modbin for p4s333 mobo?

Recommended by Wim's BIOS...

Hi
Hope you can help, hoping to mod the bios for the p4s333 SiS 645 chipset, but as of yet I can't find a version of modbin that will open the code.I have tried upto modbin6b which reads the code but reports it as "non award code" when it is.
Are there much later versions of modbin or am I just diong something wrong?

TIA
Tony

[edwin]

Not doing something wrong. Tried all known versions of modbin on this one, no dice. Either Asus has goofed up or found a way to protect their bioses.

Hi
Tried modbin6b with the f8 bios for the ga8srx also 645 chipset and the bios loaded ok, although there was not much available to alter.
It does look like they are protecting the bios file although it can be viewed with a hex editor.

Simple question:

Did you extract the bin file from the Asus bios file with LHA extractor?