i have psp 3004 and its version 6.00. its not hacked yet i think. its opening , i can surf on the menu and connect internet and download updates. then , when i want to update version 6.61 its shutting down.
also nesterj amulator , cipl flasher bla bla all the applications cause this problem.

i made a video of my psp here on youtube : /watch?v=F2oSFbHkD8M

thanks forr all help