How to undo an update

[Android Central Question]

Phone updated now all my apps are gone i dont even have a google play button what should i do???

 

[B. Diddy]

Welcome to Android Central! Which phone? A system update shouldn't get rid of all of your apps, unless the update was very buggy and caused a full factory reset.

Are you saying the app shortcuts are gone from the homescreen, or are they also gone from the App Drawer? What "Google Play button" are you referring to -- are you talking about the Google Play Store app icon?