yes, i know about the pf3100 mod, what i was getting at is that i dont use the umd drive at all, infact i dont have one, what i was asking is if it would be possible to use the pf31 from the ms slot, then to also have a ms reader going to the place on the mobo where the umd drive went to and then basically flash ms reader modules in place of the umd reader modules and access that ms from where u would normally launch umd's from in the xmb. what i wanted to do is have the pf3100 as sort of like my psp's internal memory and then have another ms reader to easily insert and remove ms's.