Generally speaking, after the release of the new version of iOS, the verification channel of the previous version will be closed, and users can only upgrade the system, not downgrade it. IOS 14. 1 was officially released on 10 year1October 20th. It stands to reason that the channel should not be updated again. I don't know if this situation is caused by a system BUG.
When I first came into contact with a smart phone, Android could swipe my card at will, so Xiao Lei didn't understand why the manufacturer didn't allow the device system to be downgraded for a long time. The reason given by the manufacturer is that the new system contains security patches, and it is not allowed to downgrade the system in order to prevent users' property from being threatened. The premise that users are not allowed to downgrade the system is that the experience of the new system is good enough and there will be no serious bugs.
Due to the small number of people upgrading iOS 15, Apple recently closed the security update of iOS 14. In other words, users of iOS 14.8 cannot update to IOS 18+0, but can only upgrade to iOS 15.
Recently, however, serious bugs have appeared in Apple's WebKit engine, which leads to loopholes in the Safari 15 browser on macOS, iPadOS and iOS, and users' private information may be stolen by the websites they visit. More seriously, Apple requires all browsers on iPadOS and iOS platforms to use WebKit engine, which means that third-party browsers may not be spared.
While forcing users to upgrade their systems, Apple failed to provide a reliable new system, which may be the reason why many iPhone users are reluctant to upgrade their systems. Although Lei's iPhone system did not encounter any serious bugs after the upgrade, the battery life of the mobile phone did drop a lot.
Now, not only iOS, but also Android phone manufacturers have turned off the system downgrade verification, and first-and second-tier brand phones do not allow users to brush their own machines. They won't let users downgrade the system. Ray has no objection, but please optimize the new system. In the past two years, an Android factory that used to add points to the system has become a sub-item. I hope other mobile phone manufacturers will take a warning.