Hi,I have a Mac, a 4k Fire Stick and a MS DOS FAT USB stick, and playing 4k movies has proven unsuccessful so far. I followed this article step-by-step (please look at the Mac section) http://www.aftvnews.com/how-to-play-files-larger-than-4gb-off-the-fire-tvs-fat32-usb-storage-in-kodi/ and it...