Apple(US:AAPL) 3 6 Ke·2025-07-31 23:17Core Points - The article discusses the process of downgrading from iOS 26, iPadOS 26, and macOS 26 beta versions back to previous stable versions, emphasizing the importance of data backup before upgrading [1][4][22] Group 1: Downgrade Process - Downgrading requires significant effort and may lead to data loss, unlike upgrading which is straightforward [3][4] - Users must ensure their data is backed up before attempting to downgrade, as the process will restore the device to factory settings [4][8] - For iPhone and iPad, the downgrade process involves connecting the device to a PC or Mac, entering recovery mode, and downloading the appropriate firmware [5][10][12] Group 2: Backup Methods - iPhone and iPad can be backed up using iCloud or by connecting to a computer for a full backup [4][8] - Mac users should utilize Time Machine for backups prior to upgrading to macOS 26 [6] - Apple Watch backups are automatically included in the paired iPhone's backup, but manual backup methods are limited [8][20] Group 3: Downgrade Limitations - Downgrading is only possible while Apple is still signing the older firmware versions, which typically lasts about a month after a new version is released [14][15] - Users are advised to check the signing status of firmware before attempting to downgrade [15] - The article mentions a risky method to modify backup files for downgrading, which is not recommended due to potential compatibility issues [9] Group 4: Special Considerations - The downgrade process for Mac is slightly more complex but manageable with proper guidance [16][19] - Apple Watch downgrades cannot be performed by users and require official service [20][22] - Users are encouraged to consider their ability to complete the downgrade process before upgrading to beta versions [22]