Rename the file to Update.bin (if required by your specific model instructions). Copy it to a FAT32-formatted USB drive.
Primarily used for TCL's P6US series 4K UHD TVs. Download S586T02 LF1V337 part05 rar
Insert the drive into the TV and use the "Local Update" option in settings or the hardware button "force flash" method (usually holding the power button while plugging in the TV). Rename the file to Update