[ChoGGi]

The Dev options have a setting to not apply updates on reboot. I'm hoping that'll work if I forget.

[OliveMate]

I can say from experience that it doesn't. I get daily notifications & popups telling me that I'm X days out of date.

[KORraN]

Supposedly, I've removed downloaded update using instructions from https://wiki.rossmanngroup.com/wiki/Pixel_4a_Battery_Perform... - hopefully this will stop popups:

>Users can delete an already downloaded (and not yet installed) update: Settings -> Apps -> All Apps -> Google Play Services -> Storage and cache -> Manage Space and from there on delete all data through the "Clear all data" button.

[rjmorris]

> I can say from experience that it doesn't.

No, I don't think you can say that. If you're getting daily notifications about being out of date, then you clearly haven't gotten the update yet. There are two possibilities: (1) You have rebooted. In this case, the dev option must have worked, because you rebooted and didn't get the update, exactly what the dev option promised. (2) You haven't rebooted. In this case, the dev option doesn't apply, because it specifically refers to what happens after you reboot.

[throw-the-towel]

If you're rooted you can turn (most of) these off.