I JB my iP4 a while back and dial in nicely and set up the way I want. I want to go to 4.1 since it can control BT from my car. 1) What is baseline? It seems to me baseline is for unlock and nothing to do with JB, right? 2) If I Limera1n now when is the iTunes 4.1 upgrade taking place? Is it iTumes upgrade the 4.1 then JB via Limera1n? 3) If #2 is right? Is that mean I will lose all the settings and the JB apps? If so, anyone successful using Pkgbackup and restore the setting and JB apps before?