Hi Jill. Welcome to justanswer.
This is pure scam. It is a trojen. DO NOT CLICK TO UPDATE.
Jill, the updates for android can be checked by going to
Settings- About phone- Check updates.
Yes Cancel it. Can you tell me do you get this message on the browser? or on the phone's notification panel?
This is a malicious attack to infect your phone. DO NOT CLICK ON THESE KIND OF LINKS as these are the tools to infiltrate your phone with virus/Trojans.
Jill are you using Windows computer or Mac OS X?
Okay. On his phone, go to Playstore. Search for Mobile Security and Antivirus. You will get an app from AVAST Software. Install it. It will make your phone secure. You too can install this app. It's a free app and it will protect your phone from these kind of attacks.
No it says Mobile Security and antivirus. Here is the link. CLICK HERE
You are welcome Jill. Let me know if you need any help. Good night.