So I updated my iPhone 7 Plus to 11.2. I was informed that the iPhone X will ship with 11.1 and that it can not be restore from a backup from 11.2. I was also informed that the latest beta of 11.2 does not work on the iPhone X. Is there any way to downgrade my iPhone 7 Plus to 11.1 and make a backup so it work on the iPhone X? Or will the iPhone X be support for 11.2 when it is official released tomorrow? Thanks.