Editing the 777_options.ini file is essential - it’s a basic step to ensure proper compatibility. This doesn’t just apply to the 777-200ER, but also to other PMDG aircraft like the 736, 737 and 738. Each of these aircraft has its own .ini file that also needs to be edited accordingly if you want to fully integrate your hardware or use with Mobiflight or Spadnext effectively.
Below, I’ve taken the liberty of including how the last four lines of the .ini files should look.
FYI, if you have, for example, PMDG 737, 738 and 777, you need to edit xxx_Options.ini file for each of these aircraft separately.
Under the [SDK] section, there should be three lines.
[SDK]
EnableDataBroadcast=1
EnableCDUBroadcast.0=1
EnableCDUBroadcast.1=1
Source https://forums.flightsimulator.com/t/winwing-pfp3n-help/703213/29?u=tenpatrol