In the early morning of this morning, Apple pushed the official version of iOS 15.3.1 system, and the update version number is 19D52. This update is an emergency push, mainly to fix vulnerabilities, no new features have been added.
Users who have been upgraded to the iOS 15.4 beta version cannot accept the more detailed push of the iOS 15.3.1 version, and if they want to downgrade to the official version of iOS 15.3.1, it is recommended to directly brush back the computer Elsevier Assistant.
According to the content of the update log given by Apple, this update mainly fixes the braille display problem.
In addition, from the technical support documentation on Apple's official website, this update also fixes a WebKit vulnerability that bad people can use to produce malicious web content and control users' devices.
The vulnerability affects models including iPhone 6s and higher, iPad Pro (all models), iPad Air 2 and higher, iPad 5th generation and higher, iPad mini 4 and higher models, and iPod touch 7th generation.
Apple therefore recommends that iPhone and iPad users update to the latest iOS 15.3.1 / iPadOS 15.3.1 as soon as possible.