If you still can’t install the latest version of iOS or iPadOS, try downloading the update again: Go to Settings > General > [Device name] Storage. … Tap the update, then tap Delete Update. Go to Settings > General > Software Update and download the latest update.
Why is the iOS 13 Update not showing up?
If your iPhone won’t update to iOS 13, it might be because your device isn’t compatible. Not all iPhone models can update to the latest OS. If your device is on the compatibility list, then you should also make sure you have enough free storage space to run the update.
Why is the iOS 14 Update not showing up?
But if your network is connected and still iOS 14/13 update is not showing, you might just have to refresh or reset your network connection. Simply turn on Airplane mode and turn it off to refresh your connection. If that doesn’t work, you may need to reset network settings: Tap Settings.