1. Open 2K15 in RED MC



2. Find the filename of the .iff you're trying to import. If the modder has it named correctly, it should be fileXXX.iff. In my case, File271632.iff. Search for that filename in RED MC.


3. Import the .iff


4. Save.

5. Profit.
Side note, you have to open MyFriend Panel for this to work.

Hopefully that helps.