Redownload the firmware file; verify your processor model match.
Never unplug the power cable during an installation. A power loss mid-update will permanently destroy the device. q plus android tv box firmware update
Insert the storage medium into the Q Plus TV box while it is turned off. Redownload the firmware file; verify your processor model
Use a toothpick or paperclip to press and hold the (usually hidden inside the AV port). While holding the button, plug the power back in. Redownload the firmware file