My phone is n85 software ver 30.019.201.3 Type Rm-334. Now my problem is everytime i plug in a headphone jack and select an "enhancement" my phone will start to freeze or restart. Sometimes removing the headphone jack returns my phone to normal state but usually it doesnt. I tried to restore my phone to factory settings, also reformatting my phone, and also doing a reflash but it didnt solve the problem. Any know how to solve this problem?