Does anyone know anything about this [LINK REMOVED]
At psp-hacks they have this to say about it:
Install DevHook with select 2.80 PRX modules for better compatibility with PSP games requiring firmware 2.80. Installer packaged by nextek.
I don't own any 2.8 games, so I was wondering if anyone with 1.5FW and a 2.8 game has checked this out.