[Q] Updating OTA with Fake Official status topic

Hey Guys,
I'm pretty old in android but new to this developer stuff so excuse me if this question is going to be noob like !

I rooted My device on MJ7 and faked Official with xposed and now i'm recieving an OTA which i assume is kit kat , what will happen to my device if i update it while i'm on root ? boot loops? can i unroot and update then root again? I'm really not going to make a backup and titanium restores...

thanks in advance!