Apple Ends iOS 18.4 Signing, Downgrades No Longer Possible
26 April 2025 · Uncategorized ·
Result
Global Times Technology Comprehensive Report: On April 24th, Apple announced it had stopped signing iOS 18.4, a decision made shortly after the release of the iOS 18.4.1 update. With the signing process for iOS 18.4 discontinued, users who have upgraded to iOS 18.4.1 will no longer be able to downgrade to earlier versions. "Signing" refers to Apple’s validation process for iOS system installations; only validated versions can be successfully installed via Apple's servers. This mechanism ensures users are running the latest and most secure system versions.
The iOS 18.4.1 update primarily addressed several security vulnerabilities, including one that had been actively exploited by malicious actors, and resolved some wireless CarPlay connection issues. Apple recommends all users install this version promptly to maintain device safety and system stability. While some users may have reasons to downgrade, such as jailbreaking or compatibility concerns, Apple encourages everyone to update to the latest version for comprehensive protection and an improved user experience.
Currently, iOS 18.4.1 is the standard version available for most iPhone users. Users who have not yet updated can check for and install the update by navigating to “Settings” - “General” - “Software Update.”
Global Times Technology Comprehensive Report: On April 24th, Apple announced it had stopped signing iOS 18.4, a decision made shortly after the release of the iOS 18.4.1 update. With the signing process for iOS 18.4 discontinued, users who have upgraded to iOS 18.4.1 will no longer be able to downgrade to earlier versions. "Signing" refers to Apple’s validation process for iOS system installations; only validated versions can be successfully installed via Apple's servers. This mechanism ensures users are running the latest and most secure system versions.
The iOS 18.4.1 update primarily addressed several security vulnerabilities, including one that had been actively exploited by malicious actors, and resolved some wireless CarPlay connection issues. Apple recommends all users install this version promptly to maintain device safety and system stability. While some users may have reasons to downgrade, such as jailbreaking or compatibility concerns, Apple encourages everyone to update to the latest version for comprehensive protection and an improved user experience.
Currently, iOS 18.4.1 is the standard version available for most iPhone users. Users who have not yet updated can check for and install the update by navigating to “Settings” - “General” - “Software Update.”