OS 14.3 brings the ProRAW camera format to the iPhone 12 Pro and 12 Pro Max, plus it introduces support for Apple Fitness+, Apple's latest service. It also includes support for Ecosia, a new search engine option, and introduces a useful change that lets apps created with Shortcuts launch more quickly.
iOS 14.3 IPSW Download Links
iOS 14.3 IPSW Download Links