iPad flashing apple logo and lock screen
My ipad is coming up with apple logo and the loading bar underneath, it loads to about 1 tenth of the bar and flashes the lock screen then goes back to the apple logo and starts all over again. i've tried restoring a back up and that has done nothing. Its a ipad 2 running 8.4
iPad Mini, iOS 8.3, Trying to upgrade to 8.4