Agree with
@dmurphy should be only $1750 plus tax. I just had mine done on my 2012 P85.
Go into "additional vehicle information". What is listed under "Infotainment Processor"?
Possible steps: (1) go into trips and reset (erase) all trip history and (2) do steering wheel reset.
Lastly, IMO, the MCU2 upgrade is a bargain and night and day from the MCU1 in terms of screen clarity, speed, added streaming services, etc. Remember the $1750 includes both middle and dash screen replacements. Labor is included. For $1750 you just bought a new high end laptop.
Getting MCU2 upgrade