ok so i just found out i can put this new firmware on my psp go which i did, and its really good i like it can do alot of things i think? i just dont kno what it can do

i was running regular 6.35 Pro which had the iso loader an that was really just about it, but i just wanted to ask what does all of this Pro-B3 do? like does it now let you do plugins and if it can how do i get the plugins to work an where do i put them? and it can now play psx games which is awesome cause i got a couple psx games that are really fun. but thats really just about it what can pro-B3 do? thats the question Thankx for the repleys :)