If after a successful or during update process the head unit restart and stuck at either logo splash or just a blank screen, please reset the head unit by disconnecting the battery for at least 4 hours to discharge/drain the capacitance in the head unit. Please make sure the battery stay disconnected long enough, otherwise the head unit will return to the splash or blank screen. If you continue to have issue after disconnecting the battery for at least 4 hours, please contact our customer support via online chat or at 888-757-0010.