Seriously guys this is frustrating the hell out of me...
I tried to hack a friends PSP Slim, it's a PSP 2004 Slim DATE CODE 8C so no Pandora.
This is why wee tried 5.03GEN-C.

I had originally 5.02 so wee updated to 5.03 with a eboot from psp-hacks.

Wee got ChickHEN R2 running successfully, ran the GEN5.03-C GUI (PSP2000, FULL, PSP Install YES) and the files are copied over, she rans the installer on her PSP and it says press L or R to flash the files. She pressed R and it reports success, then she presses o to reboot into CFW and BAM her PSP gets black and shuts off, no CFW or anything, what the hell are wee doing wrong??? Wee're trying it for several hours over the phone now with no success, help please!