How can I update my software

Go to Settings, General, Software Update and if it says software up to date, you can't. If it says e.g. iPadOS 16 press at the bottom 'Download and Install." (Note: I did this on and iPhone so it might be wrong.)

Your iPad Air 3rd Generation can be updated to IOS version 16.

Make sure that your iPad is setup to meet the following requirements before you attempt to update the iOS version over a Wi-Fi Network.

1. Your iPad must have a fast Wi-Fi connection; you cannot update over cellular data or a cellular hotspot
2. Ensure that you do not have a beta profile installed from a previous version
3. The iPad can not be in Low Power mode
4. The battery state of charge must be above 50%
5. Your iPad must have at least 6GB or more free storage space
6. Your iPad cannot be connected through VPN
7. You should leave the iPad plugged in until it finishes updating, both to assure that it remains above 50% and to keep Wi-Fi enabled (Wi-Fi turns off when the phone sleeps if not connected to power).

Axel F.