Here is how to update WhatsApp:
- Open WhatsApp and go to Options > Settings > About.
- Go to Options again > Check for update.
- Follow the on screen instructions to install the update.
You can also check for updates manually at http://www.whatsapp.com/download.
The process of updating WhatsApp will likely solve problems and may also include new features.
Remember that you do not need to remove or uninstall WhatsApp in order to update. If you do remove WhatsApp, you may lose your entire WhatsApp chat history. To learn more about chat history read this article.
WhatsApp Support Team