"Apple Issues Critical Updates for iOS 17.4.1 and iPadOS 17.4.1"
Apple has released revised versions of iOS 17.4.1 and iPadOS 17.4.1 with an updated build number of 21E237, available for compatible iPhone and iPad models. The updates can only be installed via macOS Finder or Apple Devices/iTunes apps on Windows, and not over the air. It is unclear what changed between the builds, but potential differences are likely minor. Reports of iOS 17.4 and 17.4.1 causing boot loop issues have surfaced, and the new build may address this.