Updating

Download The Latest Version Of The Theme

Login to your Themeforest account here, then after logging in, browse to your downloads page here and click on All Files & Documentation.

Go to Appearance > Themes, activate a different theme such as the default WordPress Twenty Seventeen theme

Click on the Soho Hotel theme and in the popup which appears click Delete, don't worry this will not remove any content or data, you're just removing the old theme files.

Go to Plugins and deactivate and delete the Soho Hotel Booking and Soho Hotel Shortcodes & Post Types plugins, again don't worry this will not remove any content or data, you're just removing the old plugin files.

Now lets upload the newly downloadeded theme by going to Appearance > Themes and click Add New and select the soho-hotel.zip file found in the Themes folder of the download package

And finally install and activate the required plugins

Done!