If you have successfully downloaded all parts (e.g., part1, part2, etc.) of the .rar file, follow these general steps to reinstall the software:
The TV should detect the file and begin a software installation or upgrade process. Download 35018484 3840x2160 Nikai UHD55SLED3D part1 rar
Format a USB flash drive (8GB or smaller is recommended) to FAT32 . If you have successfully downloaded all parts (e