Brewology

ok so i download irshell 4.9 because heard about how it can contoll electronics i really dont understand how it works

and also what else can irshell do?

are you using a phat psp?

You can only use the ir remote with phat psp's because the phats are the only models that have the ir port.
thats all i really ever used it for, but i think you can use usbhost with it, run games from it, play music while playing games. It should have a readme file that shows all the functions and how to operate them.