I think we are a very long ways away from understanding the human mind still and even further from developing a way to “download” memories and personalities, and even if we were able to do that what’s to say the new mind with the uploaded information would process it the sane as the original brain. Clones may have the same DNA and physical traits, but how about creating the same neural connections?

Who knows though, maybe some day in the distant future, with enough research.