How do I update Final Cut Pro X?

What version of the application do you have now?

Log into the App Store with the Apple ID that was used to purchase it. The current version should be available in the Updates page or in your Purchased page.

Normally through the Updates page in the App Store. What version do you have and what OS?

You should be good to go as discussed.

Al

Not really. Answering questions here is enough.