I've seen it twice this week, Wednesday with an iPad mini 3, I replaced the screen but kept the original home button intact 100% no damage, worked fine, restored it to wipe old data off it, just gets stuck halfway through with error 53 Ive tried a couple of software tool's with an exit recovery dfu mode but no good and exactly the same with an iPad Air 2 today I was preparing for sale. it wouldn't be an issue if you could get them back out of recovery and just live with no touch ID, but Ive got two very expensive boards heading to scrap.... bad week.