OOPS! Apple forgets Studio Display exists, pulls, then restores latest firmware update

Since the new Studio Display uses an A13 Bionic processor and runs iOS, Apple will issue occasional firmware updates to improve the experience. It should be an easy process, but reports began to pile up over the weekend that updating wasn’t going as smoothly as it should.As it turns out, the root of the problem was Apple itself. On Friday, Apple stopped signing iOS 15.4 after it released iOS 15.4.1 on March 30. When Apple stops signing a version of an operating system, it becomes unavaila