I made update of this two ports, some bugs are away ( some new :P )
But best thing (i think) is Multiplayer AdHoc for 2 players (working), and for 4 players test code, i have only 2 PSP's so i can't try it, i hope it works.
Multiplayer is based on some AdHoc functions from PSP-QUAKE ...
Download Both files and Give Feedback Via Comments