The Upgrade Paradox

Peter Naulls
Dec 6, 2019 · 4 min read

Computer systems sometimes need to be upgraded in part or in whole. To fix bugs, plug security holes or add features. You’ve all seen this.

On embedded systems, the approach is to often upgrade the entire system — all the software running at once. There are countless ways this can be done, and too many to detail here, so I’ll just focus on a couple of simplistic approaches for the sake of this story.