The iOS15.1 system channel is closed and cannot be downgraded!

The iOS15.1 system channel is closed and cannot be downgraded!

According to the news from the Institute of Core Research, Apple has currently closed the verification of the iOS 15.1 system version. This means that users who have updated to iOS 15.1.1 or iOS 15.2 beta can no longer downgrade to iOS 15.1.

It is understood that Apple usually stops verifying older versions of iOS within a few weeks after pushing the official version update. For some users who have updated to the latest iOS system, when they encounter major bugs, downgrading is sometimes very effective. This is also the reason why Apple will wait for a while before closing the verification channel for older iOS systems.

The official version of Apple iOS 15.1.1 mainly improves the call drop problem of iPhone 12 and iPhone 13 models. In addition, it also adds a simulcast sharing function and the function of shooting ProRes video on iPhone 13 Pro and iPhone 13 Pro Max. At the same time, a verifiable COVID-19 vaccination card was introduced in Apple Wallet.

<<:  Why do mobile phones become slower and slower as they are used? Is it the manufacturer who is behind this?

>>:  Analysis of the principle of attribute animation mechanism

Recommend

Complete online event operation process!

Online activities must be able to produce short-t...

Can blacklisting Taobao help bring manufacturing back to the United States?

In its quest to attract manufacturing back to Chi...

Samsung's first Tizen phone review: a failed Android clone

After years of hype, we finally saw the world'...

Soul Product Analysis Report

Soul was launched in 2016 and quickly captured th...

The taste of milk has become lighter. Was it diluted with water?

Mixed knowledge, Specially designed to cure confu...

In the year of the Nobel Prize for Bell's inequality, remembering Bell's life

The 2022 Nobel Prize in Physics was awarded to th...

Correct understanding of nose bleeding

In winter, the heating in our north makes the ind...

Baidu bidding hosting optimization service standards!

The market for Baidu's bidding promotion is v...

Short video operation: Vlog melee, who can break through?

After posting the video "Going to the Superm...

Be careful! You must know these 6 ways of spreading infectious diseases~

Review of this article: Zhang Jieli, Deputy Chief...