I am new and am wondering can the AVIC-D3 be reset to factory before any installation processes. I purchased a vehicle which has it installed. CD's play, radio plays, nothing else. I received no DVD's, no booklets (found and downloaded instruction/installation manuals) I purchased the CNDV-100 DVD's, but don't know whether to upgrade/update the unit or not. Was told that all I needed was the above DVD's and the unit would do the rest. I hope I was told correct. Any other information/suggestions would be appreciated. Thanks;
