Maybe someone can help me answer my question.
I have a AVIC-N2 and I'm currently running CNDV-40MT US east DVD. I know its pretty old.... 
That's why I recently bought a CNDV-80MT US east dvd from ebay. Also my AVIC-N2 is bypassed (not the ground wire attached to the parking brake). Its been soldered at the bottom to bypass the gyroscope and DVD-video playing restrictions.
So my question is will updating to CNDV-80MT lock my system?
