Final Fantasy IV Complete Collection - ULUS10560

[hyakki]

I feel like a complete noob lol but what is this stencil patch exactly and how do I apply it ?
Do I need to compile jpcsp with it or what ?
And of course I meant ge graphics+color mask it seems to be best combination ( text shows up and game looks better almost as good as save ge to textures )

You need the jpcsp source (a way to compile), then you can use a program called 'patch' (GNU patch or similar usually comes with a svn or git client)
to apply the patch
patch -p0 -i stencilfix.patch
to revert a patch
patch -p0 -R -i stencilfix.patch