It sounds like you’re referring to a specific software update notification for the (likely the 2020 model, TA-1258/TA-1260) with an identifier like “871” and a download size of 34 (probably 34 MB).
This aim game is very simple: hit as many targets as you can until time is up! But hurry, targets are shrinking and disappearing. Every time you missclick or let target to shrink away, you lose points.
The targets are customizable: you can change the size of the targets or their decreasing speed. You can also add red bonus targets that will earn you extra points.
Point system in this game:
The history of results is located under the game.