cant change back to original game cover

[Kirbyislife14]

[attachment=20235]
i changed the game cover of kirby: revenge of dreamland to see how it worked and now i cant change it back to the original
ive tried redownloading from gametdb and replacing the cover manually but it just doesnt wanna work
game id and format matches as shown in pic

[JosJuice]

After removing your custom cover, press View > Purge Game List Cache in Dolphin.