[trauma]

I am unable to sync my music after I downgrading my iDevice from iOS 10.2 to iOS 10.1.1, since I wanted to get prepared for the upcoming jailbreak. When I try syncing, iTunes usually just shows the progress, but none of my music is transferred. I also get an error saying that my "iPhone is blocked from syncing." This is the first time this has occurred to me after I downgraded countless of times before. Is there a way of fixing this?