To update latest version theme on themeforest.net
Step 1: Download theme
Go to themeforest.net and download your theme.
Step 2: Backup data
Backup your site( data + file theme), you can use https://wordpress.org/plugins/duplicator/ plugin to buide a package data
Step 3: Update
#1. If you use child theme (https://codex.wordpress.org/Child_Themes)
- Remove or rename old version theme on your site
- Install new version theme: upload file .zip via Add new theme and install it.
#2. If you don't use child theme and don't edit theme
- Remove or rename old version theme on your site
- Install new version theme: upload file .zip via Add new theme and install it.
- Active new version theme
#3. If you don't use child theme and edit theme
Case 1: Compare
- Compare with old version theme( use tool compare https://www.scootersoftware.com/ )
Case 2: Use child theme
- Edit old version theme to child theme: (https://codex.wordpress.org/Child_Themes)
- Remove all files that you not edit on old version theme
- Install new version theme