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Depending on whether your TV can currently power on, use one of the following methods: Method A: For a Working TV (Menu Update) Plug the USB drive into the port of the TV.
Remove the USB drive and delete the firmware file to prevent the TV from trying to update again.
While the TV is unplugged, press and on the TV (not the remote).
Plug the TV back into the power outlet while continuing to hold the Power button.