Apple stops signing iOS 17.0.2, upgraded iPhone no longer supports downgrade and recovery

Thanks to CTOnews.com netizens for being reduced to a beautiful clue delivery! CTOnews.com, November 14 (Xinhua)-- after closing the iOS 17.0.3 signature verification channel earlier this month, Apple closed the iOS 17.0.2 authentication channel again today, meaning that upgraded users can no longer downgrade or revert to the firmware version.

Apple launched the iOS 17.0.2 firmware in September, with the internal version number 21A351. "this update fixes a problem that may prevent data from being transferred directly from another iPhone during setup," Apple wrote in its update log.

Over time, Apple will gradually stop providing authentication for older versions of iOS to prevent users from downgrading to older versions of the software. Currently, iOS 17.1.1 is the latest version of iOS available to the public, while iOS 17.2 is currently in public beta and is expected to be released in December.

As previously reported by CTOnews.com, the latest iOS 17.2 version includes many feature updates, such as notebook applications, collaborative Apple Music playlists, Action Button translation options on iPhone 15 Pro, iMessage contact key verification, additional weather and clock widgets, etc.

Related readings:

"Apple closes the iOS17.0.3 authentication channel for iPhone, but still supports 17.0.2"