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iOS 26 for iPhone with a new design, more helpful Apple Intelligence, polls and backgrounds in Messages, and features that make every day effortless.
Download current and previous versions of Apple's iOS, iPadOS, watchOS, tvOS, audioOS and macOS firmware and receive notifications when new firmwares are released.
iOS 11正式版已經針對iPhone、iPod touch和iPad推出更新，由於iOS 11版本一推出時，假如太多人同時透過iTunes或OTA升級下載會造成伺服器擁擠，可直接下載iPSW，讓您不用需要在冒著升級失敗風險，比人快一步下載升級iOS 11。
IT之家为您汇总iOS/iPadOS/macOS/tvOS/visionOS各版本系统固件下载。iPhone/iPad刷机，来这里就对了!
Make sure you're taking advantage of everything iOS 18.5 has to offer.
iOS 11 was the eleventh major release of the iOS mobile operating system developed by Apple, being the successor to iOS 10. It was announced at the company's Worldwide Developers Conference on June 5, 2017, and was released on September 19, 2017. It was succeeded by iOS 12 on September 17, 2018.
关于 iOS 11 更新 iOS 11 为 iPhone 和 iPad 带来数百项全新功能，包括焕然一新的 App Store，更主动、更智能的 Siri，"相机"和"照片"的改进，以及增强现实技术带来的沉浸式体验。iOS 11 也是 iPad 迄今为止最重大的发布，新增强大的全新多任务功能、全新"文件"应用以及使用 Apple Pencil 的更多途径。
苹果今天正式推送了iOS 11.4.1正式版系统，引入了 iCloud 云端信息和 AirPlay 2（中文译为隔空播放 2）等特性，IT之家现在为大家带来该版本的固件下载。
Download current and previous versions of Apple's iOS, iPadOS, watchOS, tvOS, audioOS and macOS firmware and receive notifications when new firmwares are released.
北京时间6月5日凌晨举行的WWDC18全球开发者大会上，苹果正式发布了全新的iOS12系统。对于普通用户而言，苹果iOS12系统各个版本的正式版自然是最好的选择，如果你希望在正式版前体验一些最新的功能，那么开发者预览版也是选项之一。iOS 12专注于提高iPhone 6等旧版设备的速度。