Move the extracted firmware file to the root directory of the USB drive (do not put it in a folder). Installation: Turn off the TV and unplug it from the power source. Insert the USB drive into the TV's USB port.
Format a USB flash drive (8GB or smaller is recommended) to FAT32 . Download 35018484 3840x2160 Nikai UHD55SLED3D part1 rar
If you have successfully downloaded all parts (e.g., part1, part2, etc.) of the .rar file, follow these general steps to reinstall the software: Move the extracted firmware file to the root
Press and hold the on the TV (not the remote) and plug the TV back in. etc.) of the .rar file