dqmtl

Hello,
While trying to find more internal memory, I think I inadvertently erased the .apx file that enables my Galaxy Ace to link up with my car audio system. The music player links up but the phone does not so I can no longer make phone calls while driving. This is an important function for my job. Does anyone know how I can resolve this?

If I have to restall the ROM, does that mean I will also have to pay again for a code to unlock the phone? I travel in different countries and need an open phone.

Crossing my fingers and hoping someone knows how I can resolve this.

Thank you. Derek