QUOTE
upgrade the psp to 2.0 a downgrade will never be released , by the way don't know when but the 2.0 will be hacked .. i think that someone of TeamXecuter is working on this .
They have their hands full with the other-memory device/modchip i think, last i heard from them and that was
SEVERAL months ago

psp-dev is the only ones working on trying to crack 2.0 *cough*doubtitllhappen*cough* as far as i know
I'd say the boot sequence in 2.00 now checks if the eboot is encrypted