I saw that you need a fat psp to make the pandora battery and the magic stick. do you need to downgrade your fat psp then install a new custom firmware and then save that to your memory stick and put the new fat psp pandora battery and memory stick in the slim psp and write the new custom firmware to make it work? Thanks.

You will need a custom firmware enabled "fat" psp to convert the psp battery to pandora the rest can be done on computer via the "easy" gui that installs all necessary files to the memory stick. Then you will have to install the cemetery v3 so that pandora can run on the slim.

One of the easiest ways I've found of creating a multi-functional Pandora's Battery and Memory Stick is UPMS:
Homepage with CSO installer: http://psp-maxconsole.blogspot.com/
Guide to using CSO installer: http://z3.invisionfree.com/PSP_Maxconsole_...hp?showtopic=29

adw888

Thanks for the quick info.
I have a phat and a pandora battery already, but I'm thinking about getting a slim and you just saved me a bunch of time figuring out how to adapt my existing memory stick for the slim.