Another book by Greg Egan - "Zendegi" - has more overlap with MMAcevedo. It covers a different approach to mind uploading (possibly) more practical in near future: a generic model of the brain is fine-tuned on responses from a specific human. The generic model itself is made by averaging over many scanned connectomes. The other part of the book is VR Shahnameh which, honestly, was a bit too boring.

He also has a whole bunch of short stories on the same topic. Some assume reader is already familiar with concept of sideloading, as it's explained in the passing:

1. Bit Players: https://www.gregegan.net/MISC/BIT/BIT.html

2. 3-adica

3. Instantiation

4. Uncanny Valley (available online)

Other:

1. "Reasons to Be Cheerful"

2. “Learning to Be Me”

3. Closer