Recently, I was able to integrate a nice payware virtual cockpit from the Blackbox A340-600 into the freeware Project Airbus A380.
Overall, the integration was a success. It's really amazing to finally have a high resolution fully working VC and working MCDU when flying this aircraft. However, there are still some small issues I'm working on, such as the cargo doors not opening, incorrect performance and flight tuning, incorrect fuel consumption, and incorrect lighting effects.
I'll continue to work on it and perform test flights. I'm confident I can have most of these issues resolved this weekend.
When this project is done, I will post the steps required. Note that it will require the user to purchase the Black Box Simulations A340 in order for the integration to work. Also note that this will just be for personal use. I will not be uploading any files to help in any way. You will need to follow the steps yourself.