I installed the firmware for the advent och1 head unit, but after i plug it into the radio, the radio still wont recognize the cnp2000uca unit. The button for XM is still greyed out and it won't let me choose it. This is my second tuner and cenjen1 cord, so i know they aren't the problem.

Audio Players & Recorders - Jensen - Audiovox Cnpjen1 Specific Xm Adapter Audiovox Cnp2000uca...