Good prices, when I did a search these didn't come up. still I wanted the surround/vents etc. Hope you're right about the CP.i can`t update the firmware as the unit is hacked there is no cp on the screens they are all the same resolution so i doubt firmware needs updating.
i have seen these screens less than 200
https://www.ebay.co.uk/itm/14-17-SE...059525?hash=item3fa9d21e85:g:HGgAAOSwE1Bbhm44
https://www.ebay.co.uk/itm/SEAT-LEO...917402?hash=item33f3b2dc5a:g:XTgAAOSwgYlbj8WR
If your existing unit doesn't show the new style menus then you need updated software.
without the 8" screen the seat harman unit would have cost me twice as much.
. i may only keep the car another year or 2 so did not want to spend much.