i dont know if this is what your after, but i use a simple batch script yo create a pkg with just the patch_mp.ff in it, then i just install on the xmb using install packages option.
Heres a link to my folder. It contains the tools that are needed and a .bat file. You will need to edit the bat file using notepad to point to the correct directories on your system and also change the the folder names to your region if ur not using bles00863. And also edit the package.conf to relfect your region if not bles00683.
LINK :
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Oh yeah the folder also comes with a shitload of patches already converted to pkg. Just copy to ur usb and install, they are all bles00863.