But in the future it will be possible to connect a neuro-network to a supercomputer. And thus have robotic lims acting as usual body parts. Then the brain can then be stored seperately in a closed enviroment with its own superior blood-curcuit.
This way, you could extend a "lifetime" more than 10x i think
uploading your mind into a digital version guarantees it. these people chasing the end of biological ageing are probably wasting their time. there are too many things to take into account.
i dont think it will be possible to upload your "mind" for at least 5000 years ahead from now.