I haven't been following the state of PS3 hacking very closely, and I'm sure there are lots of people wanting to play guitar hero II on their ps3's so I'll probably get flamed a bit for bringing it up but I still have to ask.
So from what I've been able to gather, GH2 included some code to ensure that you couldn't use a tac guitar on it (which is funny, because tac had an adapter out almost immediately). This code caused the game to check for a continuous left d-pad signal and to make sure that all inputs were digital except the whammy bar. Apparently, when you plug the guitar into the ps3 via an adapter, some of those signals don't read properly and it is seen as a regular controller.
Pelican came out with an adapter to make it work, but it doesn't actually solve the problem. From what I can tell, it changes the fret buttons into "shift keys" so that when you hold one and strum, it's effictively like hitting a button on a controller. The result is that hammer ons and pull offs don't work, and that holding down a fret button doesn't light up the button on-screen.
So onto my question: I was wondering if it's possible to hack the game into bypassing the checks so that a guitar with an adapter will work. It already works on GH1 (since that game doesn't have those checks) so if it could be bypassed, it's reasonable to assume it'd work for GH2. This sounds like the kind of thing that would normally be handled by a gameshark or hex editing, but I don't know how much progress has been made on that front with regards to the ps3. Anybody know anything?