Did you have it connected to a USB port from the TV for power? During an update ,sometimes there's not enough power provided to the device when connected to the tv through USB , therefore it crashes during update . This will probably brick your device , which causes the device to get stuck at the start up logo. Unfortunately , there's currently no fix for it. Try plugging into the original power brick an hope it loads .Many have reported this issue and amazon is only offering a discount towards the purchase of another unit.
Sorry, I know this isn't much of a fix or repair suggestion