iOS 15 is no longer mandatory to upgrade, now you can’t go back after upgrading

Apple has previously pushed the official version upgrade of iOS15, and now it has pushed the official version upgrade of iOS15.0.1. I wonder if everyone’s iPhone has been upgraded to the new iOS15 system.

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Previously, new versions of Apple's iOS system would be forced to upgrade, but after the iOS15 system, Apple made a new change and no longer forced iPhone users to upgrade. The iOS15 system became other available updates, which means that your iPhone can stay on the iOS14 system and still receive security upgrade push notifications.

According to the installation rate of the official version of iOS15 system announced by Mixpanel from September 20 to the present, the installation rate of the official version of iOS15 system has reached 19.3%. This installation rate is slower than that of iOS14 system. Please note that this is the data released by Mixpanel, not the iOS15 system installation rate officially announced by Apple.

After iOS15 system is no longer forced to upgrade, the upgrade speed of iOS15 is a little slower than that of iOS14 system. Now Apple has also closed the verification channel for the latest version of iOS14 system, iOS14.8. That is to say, iPhone phones that have been upgraded to iOS15 system can no longer be downgraded back to iOS14.8 system. If your iPhone is still on iOS14.8 system, you can still rest assured that you will receive security upgrade push notifications later, but if you choose to upgrade, you cannot go back to iOS14.8 system.