Normally, It works.
1)You draw your Icon with the format 512x512.
2)You rename it with no extension (no .png, no .jpeg....) ItunesArtwork
3) You reveal in finder your building app. In Xcode, right clic on your building app and reveal in finder.
4) Drag & drop your icon with no extension ItunesArtwork on the build app directory.
Do you rename with no extension your icon file ????
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