After trying to get onto kit-kat i used this installation guide xda-developers - View Single Post - [ROM][I9505][XXUFNBE][15Mar] Omega v25 ●►Android 4.4.2◄●GoogleSE 4.3●►Omega Files◄● some of the modems i couldnt download so i try different ones,anyways managed to get omega working then all went wrong ,i notced the sound wasnt working ...on anything,couldnt ring out and the phone kept switching on and off ,i managed to get back to stock/root 4.3 and still no sound at all.i dont think i should have been able to get back to 4.3 so i have messed up bigtime,when the phone rings i cant even accept a call.this could be terminal as the phone is no good without sound,also wi-fi isnt working now.please help