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: Once complete, remove the AC power again for at least 10 seconds, remove the USB drive, and then plug the TV back in to finish the setup.
Once your USB drive is ready, follow these steps to update your Toshiba 43U7750:
: Plug the prepared USB drive into the USB Port 1 on your TV.
When a firmware file is split into multiple parts (e.g., part1.rar, part2.rar):
: You must have every part of the archive in the same folder on your computer before attempting to open them.