How to remove the instrument cluster on Citroen DS5 - high resolution color display transplant

IMPORTANT- A word of caution about swapping this display for a used one. Digging around as how I can reprogram it using Diagbox to display the proper logo etc. it actually might be a problem as it’s made to be “highly secure” as it holds the mileage information. It looks that even authorized service cannot do much. I have read that the mileage information is stored in both the BSI and this display, and whenever you connect the two, THEY SYNCHRONIZE TO THE HIGHER VALUE of the two devices and there is no way to revert to the previous lower mileage!