I ask because I’m planning on ordering Pandoras Battery online and they have kits with teh memory stick included for a steeper price.

I currently have a 4 gig stick in my PSP but I haven’t upgraded to a magic one yet. If I can use a magic memory stick as a regular one once the firmware has been downgraded I will just purchase the battery itself and use my 4gig but if not than I will buy the full kit. Help plz?