The new androids, both the Navall 1 and 2 don't use the edge connector any more.
They are connected to the main unit via a ribbon cable.
Once this is off then all of the internal pcb boards have to be removed plus the screen and touch membrane.
It's not a difficult job but you have to be careful and take your time.
The one thing I would say is that you would be voiding your warranty if you do undertake this so it would be at your own risk
If you let us know which double din it it I will talk you through it further.