So I have the 3.0 update & updated maps for my avic f90bt. I bought the F90bt already updated off of ebay. It came with a Sirius unit, already activated. When I tried the sirius I had no sound out, I thought the cable may be bad, however I got a xm unit & it didnt even show up as a source option, then I got the hd unit & no sound, & the channel doesnt change. Basically everything I hook up to the ipbus doent work. Is this a problem anyone has encountered? do I need to downgrade to 2.0 then update again? or is the ipbus hit?