iOS can download and install updates without the need to connect to iTunes; this is known as Over-the-Air (OTA) updating.
When you have an OTA update waiting for you, your Settings app typically gets a red badge and iOS will constantly nag you about software updates. The thing is, not everyone always wants to install Apple’s updates.
In this tutorial, we’ll show you how to disable requests for iOS updates on your iPhone or iPad. This trick will also remove the nagging badge on the Settings app.