Apple today stopped signing the iOS 18.3.2, a week after the IOS 18.4 updates were issued. Now that iOS 18.3.2 is not being signed, the iPhone users who have upgraded iOS 18.4 are not able to downgrade in a version of iOS 18.3.
It is specific to stop signing the old version of iOS after issuing an update for Apple, and this process prevents users from installing older versions of iOS. The “signing” refers to a server-side verification check that is downloaded to versions of iOS on a type. Only software that passes the verification check can be installed.
Stopping downgrading ensures that customers have the latest security reforms and are not unsafe for known attacks or safety holes.
The iOS 18.4 update determines more than 60 weaknesses, so it is a good idea to install the software if you have not already done so.
