Apple(US:AAPL) 3 6 Ke·2025-07-28 07:39Core Points - Apple has released the first Public Beta versions of iOS 26, iPadOS 26, watchOS 26, and macOS Tahoe, allowing users to register for the Apple Beta Software Program to experience new features early [1] - Users are advised against upgrading their primary devices to the Public Beta due to potential bugs and compatibility issues [1] Group 1: Supported Devices - iOS 26 supports iPhone 11 series (2019) and later models [2] - iPadOS 26 is compatible with the first-generation 11-inch iPad Pro (October 2018) and all subsequent iPad models [4] - watchOS 26 is available for Apple Watch Series 6 (2020) and later models [8] - macOS Tahoe has a complex compatibility situation due to differences among Intel models; users should refer to Apple's compatibility list [10] - visionOS 26 does not offer a Public Beta version this time [13] Group 2: Backup and Upgrade Process - Before upgrading, users should back up important data, especially data not stored in iCloud, such as WeChat chat history [14] - Users can back up data using Finder on Mac or the Apple Devices app on Windows, with recommendations for wired connections for stability [14][15][16] - To upgrade, users must register for the Apple Beta Software Program and then select the Public Beta option in the device settings [20][23] - For watchOS 26, the upgrade process involves using the Watch app on the paired iPhone [26] Group 3: Downgrade Process - Users wishing to downgrade from the beta version can download the iOS/iPadOS 18 or macOS Sequoia firmware package and enter recovery mode [31] - The recovery process involves using Finder or the Apple Devices app to restore the device to the latest stable version [34] - Downgrading Apple Watch requires assistance from an Apple Store, as it cannot be done independently [36]