Final stage of experiment but I need help to complete experiment...
I rooted ICS and copy Music Player.apk, Music Player.odex, MusicFX.apk & MusicFX.odex from System App and then I installed Gingerbread and paste normal way to System App and then I restart but Music Player app has gone from menu and app manager but shown in System App folder, I think I do wrong. Now I installed Jelly Bean (ROOTED) and I want paste in System App folder, so pls guys tell me what is the process of paste in System file for work? I can't understand system mount or r/w, Please guide me and which Root File Manager app can solve the solution. Pls pls pls guide me, I'm in very close end.