Get it here: http://dl.qj.net/3.03-Open-Edition-R...2202/catid/163

Ingat when youre gonna do the upgrade. But you should upgrade the console to 3.03 OE-A first (youve got the 1.5 version, right?), then do the OE-B update. Search for the the OE-A custom firmware in the site above. Read & follow the instructions carefully, otherwise this upgrade can 'brick' your PSP if done wrongly. Good luck.