Well, if you're not planning on doing any hacking around on your PSP (like with running unauthorized binaries and stuff), then you can go ahead and update your PSP with the newly released PSP 1.52 firmware. Doesn't look like Sony added any groundbreaking features to the firmware (come on Sony where's the webbrowser feature?). The firmware added the ability to play UMD music discs (none exist yet) and also system security has been "strengthened".