look
(thats work for the wipeout release)
a friend give me the follow steps to play one of those releases, but I cant have one big ms and I cant try, please try out and tell me if works:
1)rename de file "Data.wad" in the usrdir folder to "Data.psp"
2)now, execute the pbp-unpacker-050, click in "New" and put all files needed ... after that, SAVE and save with the game name, in that game, Wipeout... thats will create the file Wipeout.pbp
3)after that, rename the file to Eboot.pbp.
4) create the folder and transfer the files to one : PSP/GAME/WIPEOUT
thats all.
please try out it and tell me if works

if work I will buy one big ms today

thanks
and sorry if this is a fake, but I need know