iOS software upgrade on 3rd Generation iPad
How can I upgrade the iOS software of a 3rd generation iPad? Right now, the iOS version is 9.3.5, but the Safari browser is not up to date enough for a web application that I would like to use. I want to update my Safari, so want to update my iOS, but when I go to Settings -> General -> Software Update, there is no update available.
Any help is appreciated!
Thank you!
iPad (3rd gen) Wi-Fi