How do I update the operating system?

First you tell us the sub-model of your MacBook Pro and what OS version it now runs. We are your fellow end users with no way to see nor touch your computer to find hat information, and must rely on information you provide.

Older MacBook Pro sub-models cannot run the latest OS versions. Both pieces of information area available from "About this Mac..." in your Apple menu:

For security reasons, please do not post your serial number here.

With that information we can give a concise answer to any upgrade path available to you, if any.