C:\Program Files\Phoenix BIOS Editor\TEMP\
. The unpacking module can be copied from this folder, corrected and replaced. Phoenix BIOS Editor will not allow you to save BIOS unchanged, so to save BIOS we have to change some string value and then change it back (or just leave it that way).
The BIOS rootkit source code and patch scripts can be downloaded from the links at the end of this article if you want to do it all yourself.