Use this command line to extract gtp0.bin from ffu image

Code:
thor2 -mode ffureader -ffufile "C:\rm-914\XXX.ffu" -dump_gpt -filedir C:\dump
this command will create gpt0.bin and rename it as msimage.mbn

mine was F771E62AF89994064F77CD3BC16829503BDF9A3D506D3FACEC AEF3F808C868FD so my hex file in binary format was F771E62AF89994064F77CD3BC16829503BDF9A3D.bin

convert this binary file to hex using bin2hex.exe

CLICK TO HIDE CONTENT
Code:
bin2hex F771E62AF89994064F77CD3BC16829503BDF9A3D.bin HEX.hex

open .hex file in notepad
insert :020000042A00D0 in first line
and :040000052A000000CD before the last line