The patch is also available for Mac, Apple Watch, and Apple Vision Pro.
After updating, users should see if Apple Intelligence is enabled.
Users who haven’t updated their iPhone or iPad firmware since late January should do so now.
The iOS and iPadOS 18.3.1 update fixes an actively exploited zero-day vulnerability.
The security update is also available for iPadOS 17.7.5, watchOS, macOS, and visionOS.
The company credits Bill Marczak of the University of Toronto’s Munk School’s Citizen Lab for the discovery.
Apple introduced USB Restricted Mode in 2018 to protect against unit cracking or other malicious hardware.
A similar function, called “inactivity reboot,“debutedwith iOS 18.1 late last year.
It causes devices to reboot after three days of inactivity, preventing thieves and law enforcement from cracking them.
Apple also recentlyremoveddozens of iOS apps found to contain malware that could read screenshots to steal cryptocurrency wallet info.
There is one possible minor hitch with the update.
Some usersreportedthat macOS Sequoia version 15.3.1 re-enabled Apple Intelligence.
Those affected saw the welcome screen after rebooting their devices.
However, Appledisablednews summaries after criticism from the BBC over hallucinations.
