no you can still hack it!!! you need 5.03 official firmware,however DO NOT
update your psp using network update you must download 5.03 update eboot with your computer,then manually install that eboot in the common folder of your psp then run it, once you have it to 5.03 then download chickHEN R2 then put that in your photo folder run that then download CFWEnabler 3.30 in your game folder run that and now your psp3000 is temporarily Hacked!!!
you can run emulators,apps,homebrew,umd back-ups and even PSX games.
Good Luck keep me updated if you have any questions.