Yes.

If you are installing the rc version or beta version. Then just go to device management in general settings and remove the description file there to return to ios15 point 3. sure. However, iTunes protects the data from downgrading. First go to the early adopter and install a description file that blocks the upgrade. At most, the software prompts but the phone will not be forced to upgrade. Aisi Buguao data flashing has dropped to 15:3:1. As a result, when activating, one step is to update the software. If you choose manual update, the next step is to update the system. There is no choice but to upgrade to 15:4.