The fastest way is to use plugins like this one: Easy Theme and Plugin Upgrades
- Download the latest zip file for your theme (directly from your TF account).
- Log into your WordPress site.
- Go to Appearance > Themes.
- Click the “Add New” button at the top of the page.
- Click the “Upload Theme” button at the top of the page.
- Click the file browse button to select your theme zip file. The button’s text varies by browser. It typically says “Browse…”, “Choose File”, or “Choose…”.
- Select the zip file with the new theme version to install.
- Select “Yes” from the “Upgrade existing theme?” option.
Click the “Install Now” button.