: Ensure your USB drive is formatted to FAT32. Lenovo and other manufacturers warn that using the wrong format or an interrupted update can "brick" the device.
: 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 Download 40b7500 715g6686 moa 001 004k BIN
Press and hold the button on the TV (not the remote) and plug the TV back in. : Ensure your USB drive is formatted to FAT32
: 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. Download 40b7500 715g6686 moa 001 004k BIN