Problems with downloading a person's consciousness

One way that has been proposed to produce life after death is the ideas that a person' consciousness can be a computer program and upon death that program can be downloaded into a complex enough computer and as long as that computer is running you have life after death and potential immortality. It has been proposed as a singular theory but to actually make it work properly it becomes a multiplicity theory instead. If you can be represented as a computer program and then downloaded into a computer then you can be downloaded into any number of different computers. So thee can be multiple version of you existing at one time.

Is there a way out of this conclusion? If you say that each different computer has a different ixperiencitness because the computer serves the same function as a human body, and you have done exactly the same down load into each computer, you have the problem of did you actually download the right ixperiencitness, which you have absolutely no control, of into the computer. Each new download will have a different ixperiencitness. The question will be: Have you downloaded enough of the exact same computer program to get the right one you that you will experience or just some other persons ixperiencitness? For downloading to work multiplicity must be true

You might know that you have the same predicted output behavior in the downloaded program, but how can you ever know if you have the right consciousness or ixperiencitness?

The brain functions differently than computer does. The brain parallel processes information with billions of neurons connected in numerous ways to other neurons. Whereas a computer processes a few bits of information at a time, very quickly. There would be a major transformation from the structure and functioning of a brain into that of the structure and functioning of a computer.

An electronic device could replicate the way the brain functions where each neuron is replaced by an electronic device that can replicate the behavior of the each neuron. This is called an isoidentireplica. You do not down load the program, you construct the device in the right way.

There is however, a way to actually control the structure and functioning device where you can download a person consciousness. This is by the process of virtual S&F.