Important:
Updating the theme will override the old files and replace them with the new ones. So, before you update the theme: if you’ve made any modification to the theme itself (to the files), remember to do that on a child theme so you won’t lose any changes when updating the theme.

(You won’t lose any of your content and settings by updating the theme).

There’re two ways to update an Artisan theme:

First way: Regular Updates

The easiest way. Learn about it here.

Second way: Manual Updates

If you want to manually update the theme, navigate to Appearance » Themes, and:

1. Click the “Add New” button
2. Then click “Upload Theme” at the top of the screen
3. Click on “Choose File” and select the zip file for the theme in your computer
4. Click on “Install Now”
5. WordPress will tell you that the theme is already installed. So, to replace it, click the button that says “Replace current with uploaded“.

And that’s about it.