Facebook is typically updated automatically on most devices, but you can also check for updates manually to ensure that you have the latest version of the app or website. Here's how to update Facebook on different devices:
On mobile devices:
Open the Google Play Store (Android) or App Store (iOS) on your mobile device.
Search for "Facebook" in the search bar.
If there is an update available, you should see an "Update" button next to the app. Click the button to start the update.
Open your web browser and go to www.facebook.com
If there is an update available, you may see a message at the top of the page prompting you to update the app. Click on the message to start the update.
If you are having trouble updating Facebook, you may want to try restarting your device or clearing the cache and data for the Facebook app to see if that resolves the issue. If the problem persists, you can try contacting Facebook support for assistance.