gen-d for phat

I run the update and then the psp just goes black...well it has happened when I've tried to install it on 2 of my friends' psp phats, and it happened yesterday (on another friend's psp)...

NVM... I realised that slim and phat have different update software... I remember I downloaded the one for my psp (slim) from pspslimhacks and I guess that is why it never worked (I guess), I downloaded it from psp-hacks and it worked...