Apple Stops Signing iOS 16.3.1 to Prevent Downgrading
Following the release of iOS 16.4.1 today, Apple has stopped signing iOS 16.3.1, preventing iPhone users from downgrading to that software version. iOS 16.4, iOS 16.4.1, and the iOS 16.5 beta remain signed at the time of writing.

iOS 16.3.1 was released on February 13 and was a minor update with bug fixes, security improvements, and additional Crash Detection optimizations for iPhone 14 models. Apple routinely stops signing older iOS releases over time in order to prevent users from downgrading to an outdated software version.
iOS 16.4 will likely be unsigned later this month, so iPhone users who wish to downgrade to that version have limited time remaining to do so.
Popular Stories
While the iPhone 18 Pro and iPhone 18 Pro Max are not launching until September, there are already plenty of rumors about the devices.
It was initially reported that the iPhone 18 Pro models would have fully under-screen Face ID, with only a front camera visible in the top-left corner of the screen. However, the latest rumors indicate that only one Face ID component will be moved under the...
Following the emergence of a rumor that Apple is planning to downgrade the iPhone 18 to cut costs, further detail has emerged suggesting that display and chip specifications will see downgrades.
Earlier this week, the leaker known as "Fixed Focus Digital" said that the iPhone 18 features "certain manufacturing downgrades" that bring it more into line with the low-cost iPhone 18e model. The...
Outgoing Apple CEO Tim Cook has named the botched 2012 launch of Apple Maps as his "first really big mistake" in the role, according to a Bloomberg report covering the town hall meeting that was held Tuesday with his recently announced successor, John Ternus.
The Maps app launched with mislabeled landmarks, faulty directions, and a user experience that fell well short of Google Maps at the...