Get Familiar with iOS 12.4.1 & Older Updates
If you failed to install iOS 12.4, iOS 12.3.2, iOS 12.3.1, iOS 12.3, iOS 12.2, iOS 12.1.4, iOS 12.1.3, iOS 12.1.2, iOS 12.1.1, iOS 12.1, iOS 12.0.1, or iOS 12.0 and you've fallen behind on iOS updates, you'll want to get familiar with the updates you skipped before you install iOS 12.4.1 on your device.
If you're lingering on an older version of iOS (iOS 11, iOS 10) you'll also want to get acquainted with the features from any of the updates you missed because the features and fixes from those updates are baked into your version of iOS 12.4.1.
We've put together a guide that will take you through all of the major changes from iOS 12.1, iOS 12.1.1, iOS 12.1.2, iOS 12.1.3, iOS 12.1.4, iOS 12.2, iOS 12.3, iOS 12.3.1, iOS 12.3.2, and iOS 12.4. Take a look at it.
We've also released a detailed guide that goes through the key features found in iOS 12.4 and the changes on board iOS 12.4.1. Take a look at that too.
Make sure you dig in and get familiar with everything before you make your move. This way, you won't be caught off-guard by any of the changes.