Jermaine Dupri says super producer Jazze Pha is WRONG -- he never signed on to participate in the Super Bowl halftime show ... but it has nothing to do with Colin Kaepernick.
Pha is a producing legend in ATL and he's super plugged in -- so, when he told us Dupri was involved in the show, it sounded legit.
But, Dupri says Pha's just wrong -- and when we started questioning Jermaine he told us point blank, "You think I'm saying no because it's a secret?