Today Apple has released iPadOS 13.4.1 as well as iOS 13.4.1 for iPhone and iPod touch, the main headline change is the fix for the FaceTime bug which was introduced in iOS and iPadOS 13.4 a few weeks ago.
A bug was discovered recently for FaceTime where users running iOS 13.4 or iPadOS 13.4 were unable to video call users on iOS 9.3.6 and earlier as well as those on OS X El Capitan 10.11.6 and earlier. Devices running iOS versions this old are the iPad 2, iPad third generation, iPhone 4s, iPod touch 5th generation and the iPad mini first generation.
- Fixes an issue where devices running iPadOS 13.4 could not participate in FaceTime calls with devices running iOS 9.3.6 and earlier or OS X El Capitan 10.11.6 and earlier
- Addresses an issue on iPad Pro 12.9-inch (4th generation) and iPad Pro 11-inch (2nd generation) where the flashlight may not turn on after tapping the Flashlight button in Control Center or on the Lock screen
- Addresses a bug with the Settings app where choosing Bluetooth from the quick actions menu on the Home screen would fail
You can update your iPad in the usual way, either over the air or via iTunes with your device plugged in. Over the air updating can be found in Settings > General > Software Update then follow the steps through.