Hi there!
Pandora is obsolete for now.
check out
ChickHEN A homebrew enabler that works with a corrupted image (a .TIFF picture)
when you have that running you might want to check out the
Custom Firmware Enabler 3.50 with wich you should be able to use every advantage of custom firmware.
I hope you dont have one of that feared TA88v3 mainboards in that Godly PSP.
I belive they are still not fully supported.