Hi to everyone! So, after some cogitations, I've discover one thing: few days ago Apple produced iOS 10.3.3 beta 4. So if you don't like raw and with many bugs iOS 11 beta 2, you can download iOS 10.3.3 beta 4 and install it. Procedure the same.
Recently I tried to downgrade to my previous iOS 10.3.2 but it drops to Recovery Mode Loop again and again. After flashing 10.3.3 b4 everything's fine!
Best regards! 🙂