It might look like immortality to outside observers, but I don't see how it is the same thing

Any process that could theoretically allow me to exist at the same time as my future self must clearly not be me anymore

So any kind if "mind backup" is a copy. A clone with a copy of my memories absolutely cannot be me. We would somehow need to be able to transfer my consciousness into a clone body

It seems very likely to me that consciousness is actually a side effect of a physical network in the brain and cannot actually be separated from the biological brain to move to an artificial brain