Manual is manual. If it is blown out you need to dial it back.
ETTL shoewing black is a totally different few questions. How long have you had the flash and how familiar are you with speedlites?
ok my 580exii now is firing in ettl but shows a black picture and whewn i goto manual its blows it out like the picture is solid white
A truly black picture or one in which only the brightest highlights are exposed? And on what camera?