Shulou(Shulou.com)05/31 Report--

Today, Apple has pushed iOS 11.2.1 version update for iOS users, in addition to the official version, Apple also pushed iOS 11.2.5 developer preview beta 1 update.

In terms of update content, this update does not bring new features, mainly performance optimizations and bug fixes. The firmware update is approximately 1.86GB in size.

How to upgrade

iOS bata users can upgrade directly via OTA.

In addition to upgrading through OTA, you can also download the corresponding firmware to upgrade through iTunes. The specific method is to download the firmware and open the latest version of iTunes on the desktop. At the same time, press "Shift+ Update" to select the firmware to be swiped.

Which devices can be upgraded

iOS11 support devices include iPhone X, iPhone 8, iPhone 8 Plus, iPhone 7, iPhone 7 Plus, iPhone 5s, iPhone SE, iPhone 6/Plus, iPhone 6s/Plus;9.7-inch iPad, iPad Air, iPad Air 2, iPad Pro (9.7/12.9 second generation, 10.5 inches), iPad mini 2, iPad mini 3, iPad mini 4, iPod only iPod Touch 6 device.

Note: iOS11 is no longer compatible with iPhone 5, iPhone 5c, iPad 4 devices

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