First select the game you want. Before it has a chance to load go into the menu and select the Bios.
Don't change country! That will be auto set based on your ROM.
As soon as you have selected the bios IMMEDIATELY restart the app by hitting the menu key on phone. Then going to QUIT then going to RESTART.
Once you have done that after a short pause the game should load. If it does not set SPU sync to on and the RESTART again.
Again wait for pause.
If that doesn't work then I'm out of ideas!