How to Update Existing Extensions & Modules in Magento
- Login to your Magento administrator dashboard and click on System menu >> Web Setup Wizard (Under Tools section).

- This would redirect you to Setup Wizard page where you should click on the Extension manager option.

- This will be redirected to Magento Marketplace. You need to register for a account at https://account.magento.com/customer/account/ or login to your existing account in order to retrieve Public and Private Keys.

- You will be redirected to a new page where you can observe extensions you have installed and if there are pending updates. If there are updates available, a message with a Review updates button would appear as seen below:

Click on Review Updates button and place ticks in front of the chosen extension(s) and click on the Update button.
- Immediately, you'll be redirected to the Readiness Check page. Press the Start Readiness Check button.

- Once checking is complete, you can choose the version to which you want to update the component and click on the Update button.

- The next step is to choose whether you would like a backup of your application or not. Once you choose what you want to backup, click on the Create Backup button.

In case you do not want a backup, uncheck all and click Next.
- This would take you to the last step where you should finalize the process by clicking on the Update button.

A message for successful update appears in the console log and the extension is up-to-date now!
Updated on: 18/04/2019
Thank you!
