i have a psp slim with 3.71m33-2 and i am wondering, does psp slim support coldboots, gameboots, wave, and bootsound?. wat can i change and what cant i change.

also, if bootsoudn does work, can someone help me find this sound where when it starts up, a person say playstation portable. i foudn some but they all hav psp at the end which sound odd, its like repeating itself.