How do I know if my PS4 is up to date?

How do I know if my PS4 is up to date?
How to check your system software version

Go to Settings > System > System Software > Console Information.
Check under the system software version. “Up to date” is shown if you have the latest version installed.

How to check your system software version
  1. Go to Settings > System > System Software > Console Information.
  2. Check under the system software version. “Up to date” is shown if you have the latest version installed.