On the morning of April 3,Apple closed the verification channel for IOS 14.4.1 today.
In other words, if you have upgraded to IOS 14.4.2 or above, you can only be honest and practical. You can't go back to earlier versions.
Traditionally, Apple will stop signing the old code regularly after releasing the new version of IOS to prevent users from installing the previous version of IOS, which can protect users from the impact of new threats and ensure that the device runs the latest software.
Last week, Apple released IOS 14.4.2, fixing a key security vulnerability. The vulnerability exists in WebKit, which may enable malicious sites to activate arbitrary scripts, and has been tried by hackers.
As for IOS 14.4.1, it will be released on March 8.
This means that if you encounter any major problems with IOS 14.4.2, you have to wait for the next official version update or join the test plan.
At present, Apple has entered the final stage of IOS 14.5 public beta, and the official version will be launched as soon as this month.
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