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: Copy the 40b7500_715g6686_moa_001_004k.bin file directly to the root of the USB drive. Do not put it in a folder. Installation : Unplug the TV from the power outlet. Insert the USB drive into the TV's USB port.

Continue holding the power button until the screen shows an "Upgrading" or "Software Updating" progress bar. Download 40b7500 715g6686 moa 001 004k BIN

: Once the update reaches 100%, the TV usually restarts. Remove the USB drive immediately so it doesn't try to update again. Safety Tips Guide to Firmware Update | Lenovo US : Copy the 40b7500_715g6686_moa_001_004k

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