I have the AVIC-80DVD. The only problem is that I only got CNDV-40M disc with it. The disc did not fully install. Now it shows an error on the screen saying this is not the correct disc. I searched on here and found how to do a manual reset with the remote. What disc do i need to make my system function with the formatting process??

what screen do you have it hooked up to, you need a touchscreen for that disk

I have the pioneer avh p5700dvd...even when i enter the service menu i can not reformat the navi. i even have the expensive remote to control the unit in the service menu

Since it is connected to a touch screen, you can use the most current map disks, which are CNDV-70.