Download 
Intel CSME System Tools v11 and unpack it.
Run \Flash Image Tool\WIN32\
fit.exe
Drug and drop your BIOS firmware into 
Flash Image Tool's window.
Go to 
Intel® ME Kernel->
Reserved
Change a value of 
Reserved parameter to 
Yes.
Press 
Ctrl+B to build modded firmware. Then choose 
Yes
The file with name 
outimage.bin is modded firmware.