[Solved] How to add fixes to ppsspp myself?

[belmont1990]

Hello guys, I'm new here as well to psp emulation
First of all, ppsspp is a GREAT emulator, it runs most of my favourite psp games very well or simply flawlessly.
On top of that, I would never assume that my >5 years old laptop could handle psp emulation on full speed

I have a question about adding fixes do emulator code myself, is that possible?
What i would want to do? well I dying to play 3rd birthday on laptop and beat it, but newest build gives this annoying "blue fog" effect, as I noticed some older ones (9.1 for example) didn't had this issue, BUT also overall emulation was worse, no music at all in v.9.1.

I found some fix to this here:

Blue fog should be gone now although not very prefect .I did tried if i remove the following GE_TFMT_CLUT32 check , the screen is much more clearer and close to real PSP one.

// 3rd Birthday (and possibly other games) render to a 16 bit clut texture.
const bool compatFormat = framebuffer->format == entry->format
|| (framebuffer->format == GE_FORMAT_8888 && entry->format == GE_TFMT_CLUT32)
|| (framebuffer->format != GE_FORMAT_8888 && entry->format == GE_TFMT_CLUT16)

But don't have ANY idea what are those numbers and text, is that emu code? how to implement this to newest build?

Also this one:
https://github.com/hrydgard/ppsspp/pull/2541

How to use this setting? must i type this into some program?
I really don't know a thing about programming or coding

Help me to play this magnificent game like it should been please!
Disabling buffering gives nasty lines all over screen and it's not solution at all.