Apple releases watchOS 4.3.1
In addition to iOS 11.4 and tvOS 11.4, Apple also released the watchOS 4.3.1 update. This firmware is a small update from the time that watchOS 4.3 was released more than a month apart. Added vertical screen night vision mode and iPhone music control in watchOS 4.3.
When installing and upgrading, Apple Watch needs to have at least 50% of the remaining power, and connect the charger to the iPhone.
As a 4.xx upgrade, this firmware was mainly bug fixes and performance improvements, and no new features were added during the testing phase. Prior to the release of watchOS 4.3.1, Apple notified developers to stop using the original watchOS 1 SDK to update Apple Watch apps. Starting with watchOS 4.3.1, opening the watchOS 1 application will prompt: “The application may not be compatible with future watchOS.” This prompt means that Apple will gradually give up support for watchOS 1 applications, may launch watchOS next month Implemented in 5.