just open the vkp patch file with notepad and see for what firmware version it was created... the slide it in to the main firm using Gslide not Gflash... there is a diference between them :) Gflash is used only for CID 36 ... after sliding ... just flash the corect .mbn file to the phone using xs++/phonexs...
P.S. @TaiPan don't advise people to do some things that you dont know anithing about...