Proof Of Dualism?

I’ve been thinking about AI for the past few days, and I find the following questions interesting:

1) If Ian Pearson is correct and we are able to download human consciousness onto machines by 2050, wouldn’t this effectively prove that consciousness can exist outside a human brain, e.g., that some type of mind-body dualism is correct?

2) This is more of a technical question, but, what, exactly, would we be downloading? The original, so to speak? A replica? A set of algorithms that recreates the original?

3) Could we falsify the claim that any given machine is conscious?

4) Wouldn’t claims of conscious machines have to be assumed, in the same way we assume the existence of other minds?