Apple has updated all of its operating systems except Big Sur which is still in Beta. I installed iOS and iPadOS 14 on my devices. There were no problems with the installation, but take note iOS and iPadOS 14 have many new features. The way things are structured and handled on your device is very different than previous operating systems. You may wish to do some research on the new features before updating. Here is a very detailed listing of all the new stuff in iOS & iPadOS.