I watched this back in 2018 as a rental when it came out and, surprisingly, I remember it pretty well. I never did view it again but now that you bring it up I should give it another try!
Here's what I wrote back then:
In general I really enjoyed this movie, particularly the first 4/5ths or so. At some point the outcome became evident but the ride was still good. I found Grey likeable at times and annoying at times, but this played completely into the plot...I think I'd enjoy it more on second viewing.
I think this would make a great premise for a TV series, there were a lot of hints of some depth and breadth (world building) surrounding the premise, which is one reason why I liked the movie, that could be expanded on. Doll House and Continuum (the future parts of it) come come to mind without thinking too much about it.
Some articles for those interested:
Upgrade is a fun bit of sci-fi exploitation that is not nearly as smart as it thinks it is. Still, it has a devilish hook.
www.denofgeek.com
We explore just how that man and machine conflict played out to its final twist in Leigh Whannell's Upgrade...
www.denofgeek.com
Happy movie viewing!