Well I picked it up for $100, was missing charger

so I picked up a used charger from Game spot for $7.99

Its in pretty good condition, has 12 games, are as follows:
Star Wars: Lethal Alliance
Star Wars: Battlefront II
Star Wars: Battlefront Renegade Squadron
Practical Intelligence Quotient 2
Metal Gear Solid Portable Ops
Twisted Metal head on
Hotshots Golf open tee
Harry Potter order of the phoenix
Crash of the Titans (crash bandicoot)
Daxter
Crush
GTA Liberty City Stories
It only has a 32mb card, Looking at getting a 4GB mem stick soon for it and to put some snes and genesis goodness on it.
Its not a slim version...is model psp1001,
so my question is, how do I know if I have to do any modifications to the firmware in order to play snes/genesis stuff on it, system software shows version 3.51
I did some research, reading about needing to make some modifications to the battery and to put a 5.01 version of the firmware, this is a little daunting for a psp newb

if anyone would like to PM me please do