why do you think this is suspect? did this just pop up out of the blue? or did you have the phone check for updates?

on their website the ulfone armor 5 was last updated on jan1st 2020.

 

It's a security update that's legit between your carrier and the manufacturer.
All good.
Next customer!!!

 

Yup, that update looks OK.

Up to you if you take it or not.

 

It's a system update that includes updates to your camera software and a standard security patch. That's what system updates do.

Go into your Settings, find the system update setting (probably near the bottom under "System") and see if the same update is there. If it is then 100% it is genuine.

You can choose not to install it if you don't want, you'll just have a less secure phone. Unless you bought the phone through one of the US carriers that thinks it knows better than you and will force the update eventually whether you want to or not (some updates can be enforced that way. It's supposed to only be done for things like device safety, e.g. the infamous Galaxy Note 7 battery issues, but some carriers in the US misuse it just because they are control freaks - something that doesn't happen anywhere other than "the land of the free" ).

 

This isn't like some forums - flaming is strongly discouraged here!