A fix for the Activation Lock bug that plagued older devices that upgraded to iOS 9.3 has been released by Apple this morning, after the company pulled iOS 9.3 availability on select iPhones and iPads last week.
Apple pushed out iOS 9.3 build 13E237 to iPad Air and earlier models, as well as the iPhone 5s and earlier models. The previous build bricked those models during Activation Mode due to failed password authorization.