Apple Stops Signing iOS 17.2.1, Downgrading No Longer Possible
Apple today stopped signing the iOS 17.2.1 update, preventing iPhone users from downgrading to that version of iOS going forward. iOS 17.2.1 is no longer being signed following the January 22 release of iOS 17.3, which introduced Stolen Device Protection for the iPhone and other changes.
It is not unusual that iOS 17.2.1 is no longer being signed. Apple routinely stops signing older versions of iOS after new releases in order to encourage customers to keep their operating systems up to date and to prevent users from downgrading to older, less secure versions of the iPhone operating system.
Along with iOS 17.2.1, Apple has stopped signing iPadOS 17.2 for the iPad, and the older 15.8 and 16.7.4 versions of iOS and iPadOS for devices unable to run iOS 17.
Apple is already testing iOS 17.4, a major update that is set to come out in March.
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....
