Before updating the theme, make sure to backup your current theme version, located at “wp-content/themes/webuild”, using a FTP program. Also, make sure to backup the theme options too. Go to Appearance -> Theme Options -> Import/Export and export the options. In case you encounter any problems along the way, you can use the backed up options.
There are more ways to update the theme.
1. Manually, via WordPress Dashboard
Download the webuild package from ThemeForest and unzip it. Deactivate the current webuild theme and then delete it from the wp dashboard. Upload the new webuild.zip theme version (Appearance -> Themes -> Add New button), located in the "We Build Theme” folder and activate it.
2. Manually, via FTP
Download the WeBuild package from ThemeForest and unzip it. Navigate to “We Build Theme” folder, unzip the “webuild.zip” archive and upload the “webuild” folder to “wp-content/themes/” using a FTP program (i.e. FileZilla). Make sure to rename/delete the old webuild theme from wp-content/themes, folder before uploading the new version.
3. Automatically, via Envato WordPress Toolkit plugin (Recommended)
Envato WordPress Toolkit plugin comes packed within the theme. If you don`t have it installed yet, do it from Appearance -> Install Plugins. Then follow this guide to set up the plugin: http://goo.gl/wfzSbH Once you do that, you can automatically update the theme to the latest version.
After the theme update is done, you`ll be asked to update the current plugins (RevolutionSlider, Visual Composer, etc) to their latest versions.
Make sure to do that too (you could do it from Appearance -> Install Plugins), in order to finish the updating process.
Afterward you`re all set up!