You can easily update WhatsApp from your phone's application store. Please note if you received a message that isn't supported by your version of WhatsApp, you'll need to update WhatsApp. We encourage you to always use the latest version of WhatsApp. Latest versions contain the newest features and bug fixes.
Go to the Google Play Store and search for WhatsApp. Tap Update next to WhatsApp Messenger.
Go to the App Store and search for WhatsApp. Tap UPDATE next to WhatsApp Messenger.
Press JioStore or Store on the apps menu. Scroll to the side to select Social, then select WhatsApp. Press OK or SELECT > UPDATE.