As it became known last night, Apple stopped signing iOS 10.3.3 and iOS 11. This means that everyone who wants to roll back to one of the previous iterations of the system, but for some reason did not do this before, finally lost their chance . Now all that is left for them is to wait for the correction of existing defects in subsequent updates.
The practice of recalling previous versions of operating systems is standard for Apple. By depriving users of the possibility of unhindered downgrade to older iterations of the OS, Cupertino is trying to prevent fragmentation, well known to Android device users, and to maintain uniform standards within the ecosystem.
It's interesting that along with iOS 10.3.3 Apple stopped signing iOS 11, motivating users to upgrade to version 11.0.2. The latter, as noted earlier, corrects some of the shortcomings of the two previous updates. In particular, iOS 11.0.2 removes the crash from the loudspeakers of the iPhone 8 and 8 Plus, which manifested itself in telephone conversations, and also returns the missing photos to the site.