I don't see an option like that for mine. I updated the firmware if that matters.
https://cloud.mail.ru/public/48312ae617d8/IMG_3581.JPG

Here is what I see under the general options.
https://cloud.mail.ru/public/4700cce1ec18/IMG_3578.JPG
https://cloud.mail.ru/public/ba5a7df759bb/IMG_3579.JPG
https://cloud.mail.ru/public/92b6f5ac5302/IMG_3580.JPG

What firmware are you on and how can I downgrade?