How to update theme and required plugins?

If you want to update your theme, you have to follow the following steps:
1. Download new update related to your theme from themeforest.
2. After FTP login, go to the relevant directory.
3. After creating backup of existing theme folder, rename that theme folder.
4. Now go to the plugin section from dashboard and delete the plugins of previous version.
5. Go to themes through “Appearance” option.
6. Now upload your updated theme which you have already downloaded from themeforest.
7. After uploading that theme, you will receive a notification message which provides information about plugins that are required for your updated theme.
8. Install these plugins and activate them.