Apple Stops Signing iOS 17.5, Downgrading No Longer an Option
Apple today stopped signing iOS 17.5, preventing iPhone users from downgrading to that version of iOS. The update is no longer being signed after the May 20 release of iOS 17.5.1.
It is not unusual for Apple to stop signing an older version of iOS, and it typically happens a week or two after a new version of iOS comes out. When an update is no longer signed, it means it is no longer able to be installed on an iPhone per a server side software verification check.
Apple prevents users from installing older versions of iOS to encourage customers to keep their operating systems up to date with the latest security improvements.
iOS 17.5.1 addressed a corruption bug that could cause deleted photos to reappear on an iPhone. The update is now the only publicly released version of iOS available.
Popular Stories
Update 10:04 a.m.: iOS 27 is rolling out now, though it may take a bit for all users to see it, so keep checking!
Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event...
Update — 10 a.m. Pacific Time: Apple has released iOS 27.
During its iPhone 18 Pro and iPhone Duo event last week, Apple announced that iOS 27 will be released widely on Monday, September 14.
iOS 27 should be available around 10 a.m. Pacific Time / 1 p.m. Eastern Time today via the Settings app, under General → Software Update.
Below, we have highlighted eight new features and...
Apple today announced a new subscription initiative that turns paid iCloud+ subscriptions into a broader services bundle in more than 100 countries.
In select countries, Apple says every paid iCloud+ plan, including the cheapest 50GB tier, now includes Apple TV and Apple Arcade "at no additional cost," while family sharing extends the storage, TV and Arcade access to up to five people....
